Per-Henrik Randsborg

• Randsborg, Per-Henrik; Banitalebi, Hasan; Årøen, Asbjørn & Straume-Næsheim, Truls Martin (2024). The Tibial Tuberosity–Trochlear Groove Distance Can either Increase or Decrease during Adolescent Growth. Children. ISSN 2227-9067. 11(5). doi: 10.3390/children11050504.
• Mikaelsen, Jan Rune; Jakobsen, Rune Bruhn; Røtterud, Jan H & Randsborg, Per-Henrik (2024). Body Mass Index Did Not Affect the Risk of Revision 3-9 Years After Total Knee Replacement Surgery. Arthroplasty Today. ISSN 2352-3441. 27. doi: 10.1016/j.artd.2024.101376.
• Randsborg, Per-Henrik; Brinchmann, Jan Engelsen; Owesen, Christian; Engebretsen, Lars; Birkenes, Thomas & Hanvold, Heidi Andreassen [Show all 8 contributors for this article] (2024). Autologous Chondrocyte Implantation Is Not Better Than Arthroscopic Debridement for the Treatment of Symptomatic Cartilage Lesions of the Knee: Two-Year Results From a Randomized-Controlled Trial. Arthroscopy, Sports Medicine, and Rehabilitation (ASMAR). ISSN 2666-061X. 6(2). doi: 10.1016/j.asmr.2024.100909.
• Årøen, Asbjørn; Brinchmann, Jan Engelsen; Engen, Cathrine N.; Randsborg, Per-Henrik; Engebretsen, Lars & Jakobsen, Rune Bruhn (2023). The Need for Pragmatic Registry-Based Trials in Cartilage Research. Cureus. ISSN 2168-8184.
• Nilsgård, Tina Løkken; Øiestad, Britt Elin; Randsborg, Per-Henrik; Årøen, Asbjørn & Straume-Næsheim, Truls Martin (2023). Association between single leg hop tests and patient reported outcome measures and patellar instability in patients with recurrent patellar dislocations. BMJ Open sport & exercise medicine. ISSN 2055-7647. 9(4). doi: 10.1136/bmjsem-2023-001760. Full text in Research Archive
• Lian, Ola; Randsborg, Per-Henrik; Jakobsen, Rune Bruhn; Bukholm, Ida Rashida Khan & Aae, Tommy Frøseth (2023). Prevalence of malpractice claims after arthroscopic shoulder surgery: analysis of 69,097 procedures from a national registry in Norway. Patient Safety in Surgery. ISSN 1754-9493. 17, p. 1–6. doi: 10.1186/s13037-023-00378-5. Full text in Research Archive
• Hoseth, John Magne; Aae, Tommy Frøseth; Jakobsen, Rune Bruhn; Fenstad, Anne Marie; Bukholm, Ida Rashida Khan & Gjertsen, Jan-Erik [Show all 7 contributors for this article] (2023). Compensation Claims After Hip Fracture Surgery in Norway 2008-2018. Geriatric Orthopaedic Surgery & Rehabilitation (GOS). ISSN 2151-4585. 14, p. 1–7. doi: 10.1177/21514593231188623. Full text in Research Archive
• Nieuwenhuijse, Marc J.; Randsborg, Per-Henrik; Hyde, Jensen H.; Xi, Wenna; Franklin, Patricia & Sun, Limin [Show all 21 contributors for this article] (2023). Evidence-based objective performance criteria for the evaluation of hip and knee replacement devices and technologies. International Journal of Surgery (IJS). ISSN 1743-9191. 109(5), p. 1125–1135. doi: 10.1097/JS9.0000000000000169.
• Jiang, Hongying; Wu, Leihong; Randsborg, Per-Henrik; Houck, Jennifer; Sun, Limin & Marine, Marissa [Show all 9 contributors for this article] (2022). Analysis of Polyethylene-Related Revisions After Total Ankle Replacements Reported in US Food and Drug Administration Medical Device Adverse Event Database. Foot & ankle international. ISSN 1071-1007. 44(1), p. 13–22. doi: 10.1177/10711007221134284.
• Clementsen, Ståle; Jakobsen, Rune Bruhn; Hammer, Ola-Lars & Randsborg, Per-Henrik (2022). The Effect of Ulnar Styloid Fractures on Patient-Reported Outcomes After Surgically Treated Distal Radial Fractures. JBJS Open Access. ISSN 2472-7245. 7(3). doi: 10.2106/JBJS.OA.22.00021. Full text in Research Archive
• Randsborg, Per-Henrik; Årøen, Asbjørn & Owesen, Christian (2022). The Effect of Lesion Size on Pain and Function in Patients Scheduled for Cartilage Surgery of the Knee. Cartilage. ISSN 1947-6035. 13(2), p. 1–7. doi: 10.1177/19476035221109242. Full text in Research Archive
• Randsborg, Per-Henrik; Jiang, Hongying; Mao, Jialin; Devlin, Vincent; Marinac-Dabic, Danica & Peat, Raquel [Show all 7 contributors for this article] (2022). Two-Year Revision Rates in Total Ankle Replacement Versus Ankle Arthrodesis: A Population-Based Propensity-Score-Matched Comparison from New York State and California. JBJS Open Access. ISSN 2472-7245. 7(2). doi: 10.2106/JBJS.OA.21.00136.
• Straume-Næsheim, Truls Martin; Randsborg, Per-Henrik; Mikaelsen, Jan Rune & Årøen, Asbjørn (2022). Medial patellofemoral ligament reconstruction is superior to active rehabilitation in protecting against further patella dislocations. Knee Surgery, Sports Traumatology, Arthroscopy. ISSN 0942-2056. 30(10), p. 3428–3437. doi: 10.1007/s00167-022-06934-3. Full text in Research Archive Show summary

  Purpose: Isolated reconstruction of the medial patellofemoral ligament (MPFL-R) has become the predominant stabilizing procedure in the treatment of recurrent lateral patellar dislocation (LPD). To minimize the risk of re-dislocations, isolated MPFL-R is recommended in patients with no significant trochlea dysplasia and tibial tuberosity trochlear groove distance < 20 mm on computed tomography (CT). Incidentally, these criteria are the same that are used to identify first time LPD patients where conservative treatment is recommended. The purpose of this study was therefore to compare MPFL-R with active rehabilitation for patients with recurrent LPD (RLPD) in absence of the above mentioned underlying anatomical high-risk factors for further patellar dislocations. Methods: RLPD-patients aged 12–30 without underlying anatomical high-risk factors for further LPD were randomized into treatment either with isolated MPFL-R or active rehabilitation provided and instructed by a physiotherapist. All patients underwent diagnostic arthroscopy for concomitant problems. The main outcome measure was persistent patellar instability at 12 months. Knee function at baseline and 12 months was asses using the following patient reported outcomes measures (PROMS); KOOS, Kujala, Cincinnati knee rating, Lysholm score and Noyes sports activity rating scale. Results: Between 2010 and 2019, 61 patients were included in the study (MPFL-R, N = 30, Controls, N = 31). Persistent patellar instability at 12 months was reported by 13 (41.9%) controls, versus 2 (6.7%) in the MPFL-group (RR 6.3 (95% CI 1.5–25.5). No statistically significant differences in activity level were found between the MPFL-group and the Controls at neither baseline nor follow up. The patients with persistent instability at 12 months did not score significantly lower on any of the PROMs compared to their stable peers, regardless of study group. Conclusion: Patients with recurrent patellar dislocations have a six-fold increased risk of persistent patellar instability if treated with active rehabilitation alone, compared to MPFL-R in combination with active rehabilitation, even in the absence of significant anatomical risk factors. Active rehabilitation of the knee without MPFL-R improves patient reported knee function after one year, but does not protect against persistent patellar instability.

• Randsborg, Per-Henrik; Cepeda, Nicholas; Adamec, Dakota; Rodeo, Scott A.; Ranawat, Anil & Pearle, Andrew D. (2022). Patient-Reported Outcome, Return to Sport, and Revision Rates 7-9 Years After Anterior Cruciate Ligament Reconstruction Results From a Cohort of 2042 Patients. American Journal of Sports Medicine. ISSN 0363-5465. 50(2), p. 423–432. doi: 10.1177/03635465211060333.
• Randsborg, Per-Henrik & Chen, Amanda| (2021). How much is enough? Finding the minimum annual surgical volume threshold for total knee replacement. BMJ Surgery, Interventions, & Health Technologies. ISSN 2631-4940. 3(1). doi: 10.1136/bmjsit-2021-000092.
• Liebeskind, Alexander Y.; Nieuwenhuijse, Marc; Hyde, Jensen H.; Chen, Amanda C.; Aryal, Suvekshya & Randsborg, Per-Henrik (2021). Joint effort: a call for standardization in total joint arthroplasty data reporting. BMJ Surgery, Interventions, & Health Technologies. ISSN 2631-4940. 3(1). doi: 10.1136/bmjsit-2021-000079.
• Randsborg, Per-Henrik; Adamec, Dakota; Cepeda, Nicolas; Pearle, Andrew & Ranawat, Anil (2021). Differences in Baseline Characteristics and Outcome Among Responders, Late Responders, and Never-Responders After Anterior Cruciate Ligament Reconstruction. American Journal of Sports Medicine. ISSN 0363-5465. doi: 10.1177/03635465211047858.
• Kunze, Kyle N.; Polce, Evan; Ranawat, Anil; Randsborg, Per-Henrik; Williams, Riley 3rd & Allen, Answorth [Show all 7 contributors for this article] (2021). Application of Machine Learning Algorithms to Predict Clinically Meaningful Improvement After Arthroscopic Anterior Cruciate Ligament Reconstruction. Orthopaedic Journal of Sports Medicine (OJSM). ISSN 2325-9671. doi: 10.1177/23259671211046575.
• Randsborg, Per-Henrik; Adamec, Dakota; Cepeda, Nicolas & Ling, Daphne (2021). Two-Year Recall Bias After ACL Reconstruction Is Affected by Clinical Result. JBJS Open Access. ISSN 2472-7245. doi: 10.2106/JBJS.OA.20.00164.
• Hammer, Ola-Lars; Jakobsen, Rune Bruhn; Saltyte Benth, Jurate & Randsborg, Per-Henrik (2021). Can Generic Outcome Questionnaires Replace QuickDASH in Monitoring Clinical Outcome Following Surgical Treatment of Distal Radius Fractures? Journal of Hand Surgery-American Volume. ISSN 0363-5023. 47(1), p. 92.e1–92.e9. doi: 10.1016/j.jhsa.2021.03.024. Full text in Research Archive
• Banitalebi, Hasan; Owesen, Christian; Årøen, Asbjørn; Tran, Hang Thi; Myklebust, Tor Åge & Randsborg, Per-Henrik (2021). Is T2 mapping reliable in evaluation of native and repair cartilage tissue of the knee? Journal of Experimental Orthopaedics. ISSN 2197-1153. 8, p. 1–10. doi: 10.1186/s40634-021-00350-1. Full text in Research Archive Show summary

  Purpose: To evaluate the effect of imaging plane and experience of observers on the reliability of T2 mapping of native and repair cartilage tissue of the knee. Methods: Fifteen consecutive patients from two randomised controlled trials (RCTs) were included in this crosssectional study. Patients with an isolated knee cartilage lesion were randomised to receive either debridement or microfracture (RCT 1) or debridement or autologous chondrocyte implantation (RCT 2). T2 mapping was performed in coronal and sagittal planes two years postoperatively. A musculoskeletal radiologist, a resident of radiology and two orthopaedic surgeons measured the T2 values independently. Intraclass Correlation Coefficient (ICC) with 95% Confidence Intervals was used to calculate the inter- and intraobserver agreement. Results: Mean age for the patients was 36.8 ± 11 years, 8 (53%) were men. The overall interobserver agreement varied from poor to good with ICCs in the range of 0.27– 0.76 for native cartilage and 0.00 – 0.90 for repair tissue. The lowest agreement was achieved for evaluations of repair cartilage tissue. The estimated ICCs suggested higher interand intraobserver agreement for radiologists. On medial femoral condyles, T2 values were higher for native cartilage on coronal images (p < 0.001) and for repair tissue on sagittal images (p < 0.001). Conclusions: The reliability of T2 mapping of articular cartilage is influenced by the imaging plane and the experience of the observers. This influence may be more profound for repair cartilage tissue. This is important to consider when using T2 mapping to measure outcomes after cartilage repair surgery.

• Aae, Tommy Frøseth; Jakobsen, Rune Bruhn; Bukholm, Ida Rashida Khan; Fenstad, Anne Marie; Furnes, Ove Nord & Randsborg, Per-Henrik (2021). Compensation claims after hip arthroplasty surgery in Norway 2008–2018. Acta Orthopaedica. ISSN 1745-3674. 92(3), p. 311–315. doi: 10.1080/17453674.2021.1872901. Full text in Research Archive Show summary

  Background and purpose — Orthopedic surgery is one of the specialties with most compensation claims, therefore we assessed the most common reasons for complaints following total hip arthroplasty (THA) reported to the Norwegian System of Patient Injury Compensation (NPE) and viewed these complaints in light of the data from the Norwegian Arthroplasty Register (NAR). Patients and methods — We collected data from NPE and NAR for the study period (2008–2018), including age, sex, and type of complaint, and reason for accepted claims from NPE, and the number of arthroplasty surgeries from NAR. The institutions were grouped by quartiles into quarters according to annual procedure volume, and the effect of hospital procedure volume on the risk for accepted claim was estimated. Results — 70,327 THAs were reported to NAR. NPE handled 1,350 claims, corresponding to 1.9% of all reported THAs. 595 (44%) claims were accepted, representing 0.8% of all THAs. Hospital-acquired infection was the most common reason for accepted claims (34%), followed by wrong implant position in 11% of patients. Low annual volume institutions (less than 93 THAs per year) had a statistically significant 1.6 times higher proportion of accepted claims compared with higher volume institutions. Interpretation — The 0.8% risk of accepted claims following THAs is 1.6 times higher for patients treated in low-volume institutions, which should consider increasing the volume of THAs or referring these patients to higher volume institutions.

• Randsborg, Per-Henrik; Aae, Tommy Frøseth; Bukholm, Ida Rashida Khan; Fenstad, Anne Marie; Furnes, Ove Nord & Jakobsen, Rune Bruhn (2021). Compensation claims after knee arthroplasty surgery in Norway 2008–2018. Acta Orthopaedica. ISSN 1745-3674. 92(2), p. 189–193. doi: 10.1080/17453674.2020.1871187. Full text in Research Archive Show summary

  Background and purpose — Orthopedic surgery is one of the specialties with most compensation claims. We assessed the claims following knee arthroplasty surgery reported to the Norwegian System of Patient Injury Compensation (NPE) in light of institutional procedure volume. Patients and methods — We collected data from NPE and the Norwegian Arthroplasty Register (NAR) for the study period (2008–2018). Age, sex, type of claim, and reason for compensation were collected from NPE, while the number of arthroplasty surgeries was collected from NAR. The treating hospitals were grouped by quartiles according to annual procedure volume. The effect of hospital volume on the likelihood of an accepted claim was estimated. Results — NAR received 64,241 reports of arthroplasty procedures, of which 572 (0.9%) patients filed a claim for treatment injury. 55% of the claims were accepted, representing 0.5% of all knee arthroplasties. The most common reason for accepted claim was a hospital-acquired infection, in 28% of the patients, followed by misplaced implant (26%) and aseptic loosening (13%). The hospitals with the lowest annual volume (57 or fewer arthroplasties per year, first quarter) had a statistically significantly larger fraction of granted claims per procedures compared with other institutions. Interpretation — The overall risk of ending up with compensation due to treatment error following knee arthroplasty was 0.5%. The risk of accepted claim was greater for patients operated in the lowest volume hospitals.

• Kjennvold, Stian; Randsborg, Per-Henrik; Jakobsen, Rune Bruhn & Årøen, Asbjørn (2020). Fiksasjon av akutte chondrale frakturer i kne. In Hansen, Ann Kristin (Eds.), Høstmøteboka 2020. Norsk Ortopedisk Forening. ISSN 978-82-994275-2-4.
• Randsborg, Per-Henrik; Tajet, Jonas; Negård, henrik & Røtterud, Jan H (2020). Manipulation under Anesthesia for Stiffness of the Knee Joint after Total Knee Replacement. Arthroplasty Today. ISSN 2352-3441. 6(3), p. 470–474. doi: 10.1016/j.artd.2020.05.019. Show summary

  Background Stiffness of the knee joint is a feared complication after total knee replacement (TKR). An initial noninvasive treatment option is the manipulation of the knee under anesthesia (MUA). The purpose of this study is to evaluate the midterm result of the MUA for joint stiffness after primary TKR. Methods Patients treated with the MUA for knee stiffness after primary TKR surgery performed at Akershus University Hospital during 2014-2018 were invited to a follow-up clinic. The range of motion (ROM) of the knee joint was measured using a goniometer, and the patients reported the Lysholm score, Knee injury and Osteoarthritis Outcome Score, and Tegner score. In addition, any complications or reoperation after the MUA was noted. Results A total of 24 patients were identified in the journal system at the hospital. Twenty-three of these (17 women and 6 men) attended the designated follow-up on average 26 months (range [r], 16-35) after the MUA. The total ROM was 97° (r, 84°-116°) at the time of follow-up, compared with 70° (r, 50°-80°) before the MUA (P

• Randsborg, Per-Henrik (2020). Orthopaedic Surgeons Are Doctors Too. Commentary on an article by Deena Kishawi, BS, et al.: “Low Preoperative Albumin Levels Predict Adverse Outcomes After Total Joint Arthroplasty”. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 102(10). doi: 10.2106/JBJS.20.00192.
• Hammer, Ola-Lars; Jakobsen, Rune Bruhn; Clementsen, Ståle; Fuglesang, Hendrik Frølich; Bjørnelv, Gudrun Maria Waaler & Randsborg, Per-Henrik (2020). Cost-Effectiveness of Volar Locking Plate Compared with Augmented External Fixation for Displaced Intra-Articular Wrist Fractures. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 102(23), p. 2049–2059. doi: 10.2106/JBJS.19.01288.
• Kjennvold, Stian; Randsborg, Per-Henrik; Jakobsen, Rune Bruhn & Årøen, Asbjørn (2020). Fixation of acute chondral fractures in adolescent knees. Cartilage. ISSN 1947-6035. p. 1–9. doi: 10.1177/1947603520941213.
• Aae, Tommy Frøseth; Lian, Øystein Bjerkestrand; Årøen, Asbjørn; Engebretsen, Lars & Randsborg, Per-Henrik (2020). Compensation claims after knee cartilage surgery is rare. A registry-based study from Scandinavia from 2010 to 2015. BMC Musculoskeletal Disorders. ISSN 1471-2474. 21, p. 1–8. doi: 10.1186/s12891-020-03311-4. Full text in Research Archive Show summary

  Background: Focal cartilage defects (FCDs) in the knee joint has a high prevalence. A broad range of treatment options exists for symptomatic patients. Knowledge of patient compensation claims following surgical treatment of FCDs is missing. The purpose of this study is to evaluate compensation claims filed to the Scandinavian registries for patient compensation following treatment of FCDs in the knee joint from 2010 to 2015 and identify possible areas of improvement. Methods: A cross-sectional study design was used to obtain all complaints following surgical treatment of FCDs from the Scandinavian registries from 2010 to 2015. Data such as age, gender, type of treatment, type of complaint, reason of verdict and amount of compensation were collected and systematically analyzed. Results: 103 patients filed a compensation claim. 43 had received debridement (41.7%), 54 microfracture (MF) (52.4%), 3 mosaicplasty (2.9%) and 3 autologous chondrocyte implantation (ACI) (2.9%). Of the 103 claims, 36 were granted (35%). 21 following debridement (58.3%), 13 after MF (36.1%), 1 following mosaicplasty (2.8%) and 1 after ACI (2.8%). The most common reason for complaint was infection (22.1%), of which 89% were granted. The average compensation was €24.457 (range €209 – €458.943). Conclusion: Compensation claims following surgical treatment of knee cartilage injuries in Scandinavia are rare. Establishing nationwide cartilage registries can add further knowledge on this troublesome disease.

• Randsborg, Per-Henrik (2019). Making Omelets without Breaking Eggs Commentary on an article by Gregory S. Kazarian, AB, et al.: “The Impact of Surgeon Volume and Training Status on Implant Alignment in Total Knee Arthroplasty”. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 101(19). doi: 10.2106/JBJS.19.00740.
• Randsborg, Per-Henrik; Kjennvold, Stian & Røtterud, Jan H (2019). Arthroscopic Fixation of Osteochondritis Dissecans of the Knee Using a Motorized Pick and Headless Compression Screws. Arthroscopy Techniques. ISSN 2212-6287. p. e1–e6. doi: 10.1016/j.eats.2019.05.031.
• Clementsen, Ståle; Hammer, Ola-Lars; Saltyte Benth, Jurate; Jakobsen, Rune Bruhn & Randsborg, Per-Henrik (2019). Early Mobilization and Physiotherapy Vs. Late Mobilization and Home Exercises After ORIF of Distal Radial Fractures. JBJS Open Access. ISSN 2472-7245. 4(3). doi: 10.2106/JBJS.OA.19.00012. Full text in Research Archive
• Randsborg, Per-Henrik (2019). Unstable Osteochondritis Dissecans in the Mature Knee: Internal Fixation Works, But We Need More Data. Arthroscopy: The Journal of Arthroscopy And Related. ISSN 0749-8063. p. 2523–2524. doi: 10.1016/j.arthro.2019.05.040.
• Straume-Næsheim, Truls Martin; Randsborg, Per-Henrik; Mikaelsen, Jan Rune; Sivertsen, Einar; Devitt, Brian M. & Granan, Lars-Petter [Show all 7 contributors for this article] (2019). Recurrent lateral patella dislocation affects knee function as much as ACL deficiency – however patients wait five times longer for treatment. BMC Musculoskeletal Disorders. ISSN 1471-2474. 20. doi: 10.1186/s12891-019-2689-7. Full text in Research Archive Show summary

  Background: Surgical treatment of young patients with recurrent lateral patella dislocation (RLDP) is often recommended because of loss of knee function that compromises their level of activity or even their daily life functioning. This situation is comparable to young patients with an anterior cruciate ligament (ACL) rupture. The purpose of this study was therefore to explore the time from injury to surgery and the pre-operative symptoms and knee function of young RLPD patients scheduled for stabilizing surgery and compare this group to age and sex-matched ACL-deficient patients. Method: Forty-seven patients with unilateral RLPD listed for isolated medial patellofemoral ligament reconstruction were included in the study (RLPD-group). This group was compared to an age, sex and BMI matched ACL patient group obtained from the Norwegian knee ligament registry (ACL-group) for the following outcome measures: the knee injury and osteoarthritis outcome score (KOOS) assessed on the day of surgery and time from injury to surgery. Results: The RLPD-group scored significantly lower than the ACL-group for the three KOOS subscales “Pain” (73.6 vs. 79.8, p < 0.05), “Symptoms” (71.7 vs. 79.3, p < 0.05) and “ADL” (84.7 vs 89.5, p < 0.05). The lowest KOOS values were found for Sports/Recreation (53.5 vs. 51.3, p = 0.65) and Quality of life (37.6 vs. 36.7, p = 0.81). The average time from primary injury to surgery was 6 months for the ACL group and 31 months for the RLPD group. Conclusion: RLPD affected knee function as much as ACL deficiency, and was associated with more pain. Still the RLDP patients waited on average 5 times longer for surgery.

• Hammer, Ola-Lars; Clementsen, Ståle; Hast, Joakim Aasli; Saltyte Benth, Jurate; Madsen, Jan Erik & Randsborg, Per-Henrik (2019). Volar Locking Plates Versus Augmented External Fixation of Intra-Articular Distal Radial Fractures - Functional Results from a Randomized Controlled Trial. Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 101(4), p. 311–321. doi: 10.2106/JBJS.18.00014.
• Clementsen, Ståle; Hammer, Ola-Lars; Engebretsen, Erik; Jakobsen, Rune Bruhn & Randsborg, Per-Henrik (2018). Compensation after distal radial fractures. A review of 800 claims to the Norwegian system of patient injury compensation 2000-2013. The Open Orthopaedics Journal. ISSN 1874-3250. doi: 10.2174/1874325001812010419.
• Fuglesang, Hendrik Frølich; Flugsrud, Gunnar B; Randsborg, Per-Henrik; Hammer, Ola-Lars & Utvåg, Stein-Erik (2018). Five-Year Follow-up Results of a Randomized Controlled Study Comparing Intramedullary Nailing with Plate Fixation of Completely Displaced Midshaft Fractures of the Clavicle in Adults. JBJS Open Access. ISSN 2472-7245. 3(4). doi: 10.2106/JBJS.OA.18.00009. Full text in Research Archive
• Oksum, Mads Anders & Randsborg, Per-Henrik (2018). Treatment of instability of the proximal tiobiofibular joint dynamic internal fixation with a suture button. Arthroscopy Techniques. ISSN 2212-6287. 7(10), p. 1057–1061. doi: 10.1016/j.eats.2018.08.004.
• Solvang, Håkon; Nordheggen, Robin Andre; Clementsen, Ståle; Hammer, Ola-Lars & Randsborg, Per-Henrik (2018). Epidemiology of distal radius fracture in Akershus, Norway, in 2010-2011. Journal of Orthopaedic Surgery and Research. ISSN 1749-799X. 13(199). doi: 10.1186/s13018-018-0904-0. Full text in Research Archive
• Oppebøen, Sjur; Wikerøy, Annette Konstanse Bordewich; Fuglesang, Hendrik Frølich; Dolatowski, Filip Celestyn & Randsborg, Per-Henrik (2018). Calcar screws and adequate reduction reduced the risk of fixation failure in proximal humeral fractures treated with a locking plate: 190 patients followed for a mean of 3 years. Journal of Orthopaedic Surgery and Research. ISSN 1749-799X. 13(197). doi: 10.1186/s13018-018-0906-y.
• Ananthaharan, Archana & Randsborg, Per-Henrik (2018). Epidemiology and patient-reported outcome after juvenile osteochondritis dissecans in the knee. Knee (Oxford). ISSN 0968-0160. 25(4), p. 595–601. doi: 10.1016/j.knee.2018.02.005.
• Randsborg, Per-Henrik; Bukholm, Ida Rashida Khan & Jakobsen, Rune Bruhn (2017). Compensation after treatment for anterior cruciate ligament injuries: a review of compensation claims in Norway from 2005 to 2015. Knee Surgery, Sports Traumatology, Arthroscopy. ISSN 0942-2056. 26(2), p. 628–633. doi: 10.1007/s00167-017-4809-y. Full text in Research Archive
• Aae, Tommy Frøseth; Randsborg, Per-Henrik; Lurås, Hilde; Årøen, Asbjørn & Lian, Øystein Bjerkestrand (2017). Microfracture is more cost-effective than autologous chondrocyte implantation: a review of level 1 and level 2 studies with 5 year follow-up. Knee Surgery, Sports Traumatology, Arthroscopy. ISSN 0942-2056. 26(4), p. 1044–1052. doi: 10.1007/s00167-017-4802-5. Full text in Research Archive
• Fuglesang, Hendrik Frølich; Flugsrud, Gunnar B; Randsborg, Per-Henrik; Oord, Pieter; Saltyte Benth, Jurate & Utvåg, Stein-Erik (2017). Plate fixation versus intramedullary nailing of completely displaced midshaft fractures of the clavicle - a prospective randomised controlled trial. The Bone & Joint Journal. ISSN 2049-4394. 99B(8), p. 1095–1101. doi: 10.1302/0301-620X.99B8.BJJ-2016-1318.R1.
• Randsborg, Per-Henrik & Røtterud, Jan H (2017). No difference in the level of physical activity between children who have or have never sustained a fracture. Scandinavian Journal of Medicine & Science in Sports. ISSN 0905-7188. 27(12), p. 1801–1805. doi: 10.1111/sms.12787.

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• Randsborg, Per-Henrik (2023). Hva skal vi drive med? Overlegen. ISSN 1503-2663.
• Randsborg, Per-Henrik; Kalager, Guro; Owe, Jone Furulund; Thorsen, Elin Vermelid; Josefsen, Roger & Löffeler, Sven [Show all 7 contributors for this article] (2023). Tannløse spesialitetskomitéer. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 143(15), p. 1–3. doi: 10.4045/tidsskr.23.0600.
• Wikerøy, Annette Konstanse Bordewich; Jakobsen, Rune Bruhn; Fuglesang, Hendrik Frølich & Randsborg, Per-Henrik (2023). Tittel Intramedullær nagling versus Platefiksasjon av dislokerte 3 og 4 parts proksimale humerusfrakturer, en single senter randomisert kontrollert studie. .
• Straume-Næsheim, Truls Martin; BANITALEBI, HASAN; Årøen, Asbjørn & Randsborg, Per-Henrik (2023). Endring i rotasjonsforholdet mellom femur og tibia under den pubertalen veksspurten hos pasienter med patellaluksasjonsproblematikk.
• Sailer, Monica & Randsborg, Per-Henrik (2023). Innføring av standardisert pasientforløp for behandling av diabetiske fotsår reduserte antall amputasjoner og ga kortere liggetid på sykehus. .
• Randsborg, Per-Henrik (2023). Evidence-based objective performance criteria for the evaluation of hip and knee replacement devices and technologies.
• Lian, Ole Kristian; Randsborg, Per-Henrik; Bukholm, Ida Rashida Khan & Aae, Tommy Frøseth (2023). En gjennomgang av erstatningskrav etter artroskopisk skulderkirurgi i Norge 2008 – 2018 .
• Randsborg, Per-Henrik; Aae, Tommy Frøseth; Bukholm, Ida Rashida Khan & Jakobsen, Rune Bruhn (2023). Pasientskadeerstatninger etter hallux valgus korreksjon i Norge fra 2010 til 2020.
• Mikaelsen, Jan Rune; Jakobsen, Rune Bruhn; Fenstad, Anne Marie & Randsborg, Per-Henrik (2023). EFFEKTEN AV KROPPMASSEINDEKS (KMI) PÅ REVISJONSRATEN 2 – 7 ÅR ETTER KNEPROTESE.
• Hauksson, Ingi Thor; Havdal, Morten; Hoelsbrekken, Sigurd Erik & Randsborg, Per-Henrik (2023). Clostridium collagenase histolyticum vs. nåletomi for Dupytren’s kontraktur i MCP leddet. .
• Randsborg, Per-Henrik; Brinchmann, Jan Engelsen; Owesen, Christian; Engebretsen, Lars; Birkenes, Thomas & Hanvold, Heidi Andreassen [Show all 8 contributors for this article] (2023). Bruskcelletransplantasjon vs. artroskopisk debridement av isolerte bruskskader i kneleddet. En RCT med 2 års oppfølging.
• Randsborg, Per-Henrik & Bukholm, Ida Rashida Khan (2023). Tilsvar til debattartikkel av advokatene Jerstad og Haukalid. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 143(4). doi: 10.4045/tidsskr.23.0132.
• Randsborg, Per-Henrik & Bukholm, Ida Rashida Khan (2023). Vern om ordningen med pasientskadeerstatning. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 143(1). doi: 10.4045/tidsskr.22.0710. Show summary

  Vi må kunne skille mellom pasientskader som følge av feilbehandling og kriminelle handlinger som bør vurderes av domstolene. Dersom helsepersonell risikerer sivil straffeforfølgelse etter en feilbehandling, vil det ha betydelige konsekvenser for helsevesenet.

• Randsborg, Per-Henrik (2022). Vi står på skuldrene til kjemper.
• Randsborg, Per-Henrik; Aryal, Suvekshya; Zheng, Xinyan; Mao, Jialin; Marinac-Dabic, Danica & Devlin, Vincent [Show all 9 contributors for this article] (2022). Kjønnsforskjeller i risiko for tidlig revisjon etter kneprotese.
• Randsborg, Per-Henrik; Jiang, Hongying; Wu, Leihong; Houck, Jennifer; Sun, Linim & Marine, Marisa [Show all 7 contributors for this article] (2022). Risiko for tidlig revisjon etter ankelprotese med fixed eller mobil bearing plastkomponent En analyse fra FDAs MAUDE database.
• Randsborg, Per-Henrik (2022). Machine Learning for å forutsi klinisk meningsfull forbedring etter korsbåndsrekonstruksjon.
• Randsborg, Per-Henrik (2022). Effekten av bruskskadens størrelse på pasientrapporterte symptomer. En studie fra Norwegian Cartilage Project.
• Randsborg, Per-Henrik (2022). Autologous Chondrocyte Implantation.
• Randsborg, Per-Henrik (2022). Norwegian Catilage Project Status Update.
• Straume-Næsheim, Truls Martin; Randsborg, Per-Henrik & Årøen, Asbjørn (2022). Medial patellofemoral ligament reconstruction vs conservative treatment for recurrent lateral patellar dislocation - 3 years results from a randomized control trail.
• Randsborg, Per-Henrik & Jiang, Hongying (2021). Compare Revision Rates in Total Ankle Replacements Versus Ankle Arthrodesis Using Claims Data.
• Randsborg, Per-Henrik (2021). Epidemiologi og behandling av barnebrudd og Osteochondritis Dissecans.
• Randsborg, Per-Henrik; Cepeda, Nicolas; Adamec, Dakota; Rodeo, Scott; Ranawat, Anil & Pearle, Andrew (2021). Pasientrapportert resultat, retur til idrett og revisjonsrate 7-9 år etter rekonstruksjon av fremre korsbånd.
• Randsborg, Per-Henrik; Adamec, Dakota; Cepeda, Nicolas; Pearle, Andrew & Ranawat, Anil (2021). Differences in Baseline Characteristics and Outcome between Responders, Late-Responders and Never-Responders after Anterior Cruciate Ligament Reconstruction.
• Randsborg, Per-Henrik; Jiang, Hongying; Mao, Jialin; Devlin, Vincent; Peat, Raquel & Sedrakyan, Art (2021). Ankelprotese versus Artrodese – en befolkningsbasert propensity score-matched sammenligning fra New York og California.
• Randsborg, Per-Henrik (2021). Is It Time to Consider Single-Stage Revision for Periprosthetic Joint Infections After Total Knee Replacement?: Commentary on an article by Louis Dagneaux, MD, et al.: "Acute Kidney Injury When Treating Periprosthetic Joint Infections After Total Knee Arthroplasties with Antibiotic-Loaded Spacers. Incidence, Risks, and Outcomes ". Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. 103(9), p. e37–e37. doi: 10.2106/JBJS.21.00111.
• Randsborg, Per-Henrik (2020). Korona New York. Overlegen. ISSN 1503-2663. 20(3), p. 32–34.
• Randsborg, Per-Henrik (2020). Hvor ble det av den forskende klinikeren? Overlegen. ISSN 1503-2663. 20, p. 18–19.
• Randsborg, Per-Henrik (2020). Should we do more unicompartemental knee replacements? Journal of Bone and Joint Surgery. American volume. ISSN 0021-9355. doi: 10.2106/JBJS.20.00059.
• Randsborg, Per-Henrik (2020). Koronakrisen forsterker klasseskillet i New York. Dagens medisin. ISSN 1501-4290.
• Randsborg, Per-Henrik (2019). ACL registry Research. Data Collection, compliance and Choice of outcome measures.
• Randsborg, Per-Henrik (2019). From pediatric fractures to cartilage surgery. Orthopaedic Research at Akershus University Hospital, Norway.
• Randsborg, Per-Henrik; Tajet, Jonas; Negård, Henrik & Røtterud, Jan H (2019). Manipulasjon under anestesi (MUA) for stivhet etter kneprotese.
• Årøen, Asbjørn; Kjennvold, Stian; Brinchmann, Jan E.; Randsborg, Per-Henrik; Reinholt, Finn P. & Engebretsen, Lars (2019). Bone marrow derived mesenchymal stem cells in a human clinical trial to repair articular cartilage defects of the knee .
• Randsborg, Per-Henrik; Jakobsen, Rune Bruhn & Bukholm, Ida Rashida Khan (2018). Compensation after treatment for ACL injuries.
• Randsborg, Per-Henrik & Ananthaharan, Archana (2018). Epidemiology and patient reported outcome after juvenile osteochondritis dissecans in the knee.
• Årøen, Asbjørn; Kjennvold, Stian; Brinchmann, Jan E.; Randsborg, Per-Henrik; Reinholt, Finn P. & Engebretsen, Lars (2018). Bone marrow derived mesenchymal stem cells in a human clinical trial to repair articular cartilage defects of the knee .
• Aae, Tommy Frøseth; Lian, Øystein Bjerkestrand; Årøen, Asbjørn & Randsborg, Per-Henrik (2018). Pasienterstatning etter bruskkirurgi i kneleddet i Skandinavia fra 2010 til 2015.
• Oksum, Mads Anders & Randsborg, Per-Henrik (2018). Fiksering av proksimale tibiofibulærledd med dynamisk suturbutton (demonstrasjon av en kirurgisk metode).
• Randsborg, Per-Henrik (2018). Konvertering fra kneartrodese til kneprotese – et pasientkasus .
• Randsborg, Per-Henrik (2018). Bruskskader. De desperate 40 åringene. .
• Randsborg, Per-Henrik (2018). Norwegian Cartilage Project. Presenting protocols.
• Randsborg, Per-Henrik & Ananthaharan, Archana (2017). OSTEOCHONDRITIS DISSECANS. EPIDEMIOLOGI OG PASIENTRAPPORTERT RESULTATER FRA AKERSHUS UNIVERSITETSSYKEHUS 2010-2016.
• Aae, Tommy Frøseth; Randsborg, Per-Henrik; Lurås, Hilde; Årøen, Asbjørn & Lian, Øystein Bjerkestrand (2017). MIKROFRAKTUR VERSUS AUTOLOG CHONDROCYTTIMPLANTASJON – EN KOSTNADSEFFEKTIV ANALYSE.
• Randsborg, Per-Henrik; Bukholm, Ida & Jakobsen, Rune Bruhn (2017). KOMPENSASJON ETTER BEHANDLING FOR KORSBÅNDSSKADER. GJENNOMGANG AV KLAGER BEHANDLET AV NORSK PASIENTSKADEERSTATNING 2005-2015.
• Randsborg, Per-Henrik & Røtterud, Jan Harald (2017). INGEN FORSKJELL I FYSISK AKTIVITETSNIVÅ HOS BARN SOM HAR PÅDRATT SEG ET BRUDD OG BARN SOM ALDRI HAR PÅDRATT SEG ET BRUDD, MÅLT MED PAQ-C.
• Randsborg, Per-Henrik; Clementsen, Ståle; Hast, Joakim; Benth, Jurate Saltythè; Madsen, Jan Erik & Hammer, Ola-Lars (2017). VOLARE LÅSEPLATER VERSUS EKSTERN FIKSASJON VED INTRAARTIKULÆRE DISTALE RADIUSFRAKTURER: EN RCT.
• Randsborg, Per-Henrik & Røtterud, Jan H (2017). Degenerative meniskrupturer bør ikke opereres :. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 137, p. 258–258. doi: 10.4045/tidsskr.16.1028.
• Dolatowski, Filip Celestyn; Randsborg, Per-Henrik; Utvåg, Stein-Erik & Jakobsen, Rune Bruhn (2017). Comment on the article: Hemiarthroplasty versus internal fixation in super-aged patients with undisplaced femoral neck fractures: a 5-year follow-up of randomized controlled trial. Archives of Orthopaedic and Trauma Surgery. ISSN 0936-8051. 137(9), p. 1269–1270. doi: 10.1007/s00402-017-2746-3.
• Holm, Anne Guro Vreim; Lurås, Hilde & Randsborg, Per-Henrik (2016). Helseøkonomiske vurderinger av polikliniske kontroller ved frakturer i overekstermiteten hos barn. Koster det mer enn det smaker?
• Oppebøen, Sjur; Wikerøy, Annette Konstanse Bordewich; Fuglesang, Hendrik Frølich & Randsborg, Per-Henrik (2016). Pasientrapporterte resultater etter proksimal humerusfraktur, operert med Philos-plate på Akershus universitetssykehus 01.01.11-31.12.14.
• Engebretsen, Erik; Hammer, Ola-Lars & Randsborg, Per-Henrik (2016). Klager og erstatning etter behandling av håndleddsbrudd i Norge i perioden 2000-2013. Resultater fra Norsk Pasientskadeerstatning.
• Randsborg, Per-Henrik (2016). OCD, behandlingsstrategier.
• Kjennvold, Stian & Randsborg, Per-Henrik (2016). Klassifikasjon av bruskskader.

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