Per-Henrik Randsborg

Dr. Per-Henrik Randsborg


Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 April 2013 in Journal of Bone and Joint Surgery
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Journal Article
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PRPer-Henrik Randsborg
Per-Henrik Randsborg
PGPål Gulbrandsen
Pål Gulbrandsen
JBJūratė Šaltytė Benth
Jūratė Šaltytė Benth
ESEinar Andreas Sivertsen
Einar Andreas Sivertsen
OHOla-Lars Hammer
Ola-Lars Hammer
AÅAsbjørn Årøen
Asbjørn Årøen
Ties. Methods: We prospectively evaluated all children younger than sixteen years who presented to our institution with a new fracture within a twelve-month period. Exposure time to the most common childhood activities was measured by means of interviewing random parents from the study population. The main outcome measures were the annual fracture incidence in the population and fracture rates per 10,000 hours of exposure to various sports and recreational activities. Results: A total of 1403 fractures were included. The overall annual incidence was 180.1 fractures per 10,000 children younger than sixteen years. The distal part of the radius was most often fractured (436 fractures, 31.1%). Snowboarding was associated with the highest activity-specific fracture rate, estimated to be 1.9 (95% confidence interval [CI], 1.16 to 2.60) fractures per 10,000 hours of exposure. In comparison, the fracture rate per 10,000 hours of exposure was 0.79 (CI, 0.42 to 1.09) for handball, 0.44 (CI, 0.35 to 0.52) for soccer, and 0.35 (CI, 0.23 to 0.47) for trampolining. Conclusions: The distal part of the radius is the most common fracture site in childhood. Fracture rates differ between various physical activities. The fracture rate for snowboarding was four times higher compared with that for other common childhood sport and recreational activities in our region. Clinical Relevance: This descriptive epidemiology study has identified high-risk activities for pediatric fractures....

18 January 2022 in The American Journal of Sports Medicine
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Journal Article
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PRPer-Henrik Randsborg
Per-Henrik Randsborg
NCNicholas Cepeda
Nicholas Cepeda
DADakota Adamec
Dakota Adamec
SRScott A. Rodeo
Scott A. Rodeo
ARAnil S. Ranawat
Anil S. Ranawat
APAndrew D. Pearle
Andrew D. Pearle
Background: Long-term patient-reported outcome measures (PROMs), rates of return to sport, and revision risk after anterior cruciate ligament (ACL) reconstruction (ACLR) are not well understood. Purpose: To provide long-term follow-up of PROMs, return-to-sport rates, and revision rates after ACLR and to identify predictors for poor outcome. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 2042 patients were included in an institutional ACL registry (2009-2013) and longitudinally followed. PROMs were completed preoperatively and at all follow-up time points. Questions regarding return to sport and knee stability were completed at final follow-up. Predictors for poor outcome on the International Knee Documentation Committee (IKDC) score were estimated in a regression model incorporating risk factors such as patient characteristics, graft choice, and concomitant injuries. Revision rates and risk of subsequent non-ACL surgeries were calculated. Results: Autografts were used in 76% of the patients (patellar tendon, 62%; hamstring grafts, 38%). Allografts were used in 24% of patients. The questionnaires were returned by 1045 (51.2%) patients at a mean of 7.2 years (range, 5.0-9.8 years) after surgery. Improvements in IKDC score of >30 points were sustained for all patient categories. The strongest predictor for lesser improvement in IKDC score was a cartilage lesion >2 cm 2 identified during surgery. Male sex and college education completion were associated with improved IKDC scores. Meniscal lesions did not predict change) in the IKDC score. A total of 69% of patients had returned to sport after 8.1 years (range, 6.7-9.8 years). The main reason for not returning to sport was fear of reinjury. The revision rate was 7.2% after 9 years (range, 8-11 years), 13% of patients needed subsequent ipsilateral non-ACL surgery, and 6% underwent contralateral ACLR. The absence of a meniscal tear, younger age, and male sex were predictors for revision. Graft choice did not predict PROM results or revision risk. Conclusion: Improvements in IKDC scores were sustained 7 years after ACLR. The strongest predictor for poor outcome was a cartilage lesion >2 cm 2 . Patients can expect a 70% return-to-sport rate and an 87% chance of their knee feeling stable during daily and athletic activities after 8 years. Young male patients have better PROM scores but a higher risk of revision. There is a 26% chance of subsequent knee surgery within 9 years, including a revision rate of 7%, subsequent non-ACL surgery to the operated knee in 13%, and a 6% chance of contralateral ACLR.

1 October 2009 in Acta Orthopaedica
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Journal Article
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PRPer-Henrik Randsborg
Per-Henrik Randsborg
ESEinar A Sivertsen
Einar A Sivertsen
Numerous follow-up visits for wrist fractures in children are performed without therapeutic consequences. We investigated the degree to which the follow-up visits reveal complications and lead to change in management. The stability of greenstick and buckle fractures of the distal radius was assessed by comparing the lateral angulation radiographically. The medical records of 305 distal radius fractures in patients aged less than 16 years treated at our institution in 2006 were reviewed, and any complications were noted. The fracture type was determined from the initial radiographs and the angulation on the lateral films was noted. Only 1 of 311 follow-ups led to an active intervention. The greenstick fractures had more complications than the buckle fractures. The lateral angulation of the buckle fractures did not change importantly throughout the treatment. The greenstick fractures displaced 5 degrees on average, and continued to displace after the first 2 weeks. On average, the complete fractures displaced 9 degrees . Buckle fractures are stable and do not require follow-up. Greenstick fractures are unstable and continue to displace after 2 weeks. Complete fractures of the distal radius are uncommon in children, and highly unstable. A precise classification of fracture type at the time of diagnosis would identify a smaller subset of patients that require follow-up.

1 June 2014 in Journal of Pediatric Orthopaedics
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Journal Article
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PRPer-Henrik Randsborg
Per-Henrik Randsborg
HFHendrik F. S. Fuglesang
Hendrik F. S. Fuglesang
JRJan H. Røtterud
Jan H. Røtterud
OHOla-Lars Hammer
Ola-Lars Hammer
ESEinar A. Sivertsen
Einar A. Sivertsen
Background: Fractures of the clavicle are common among adolescents and have traditionally been treated nonoperatively. Recent literature has demonstrated less satisfactory results than expected after conservative management of displaced fractures in adults. The purpose of this study was to evaluate the long-term patient-reported outcome after clavicle fractures in older children and adolescents. Methods: Children aged 10 to 18 years who sustained a fracture of the clavicle between 2006 and 2008 were identified in our institution’s computerized files. The radiographs were examined and the fracture patterns, degree of dislocation, and shortening were measured. Medical records were reviewed and the patient-reported outcome was assessed using the Oxford Shoulder score and the Quick version of the Disability of Arm, Shoulder, and Hand questionnaire, and specific and general satisfaction scores. Results: A total of 185 patients (median age, 14.4 y) with 172 midshaft and 13 lateral fractures were included in the study. Sixty-five (37.8%) of the midshaft fractures were displaced, and 9 of these were operated. There was one case of nonunion and one delayed union. One hundred twenty-two (70.9%) of the patients with a midshaft fracture responded to the questionnaires on an average 4.7 years after injury. Overall results were good to excellent for the majority of nonoperatively treated patients; however, shortening of the fracture had a negative effect on the Oxford Shoulder score (P=0.02), the cosmetic satisfaction score (P=0.02), and the overall satisfaction score (P=0.01). Conclusions: The long-term patient-reported outcome after nonoperatively treated fractures of the clavicle in adolescents is good to excellent for the majority of the patients, and nonunion is rare. However, shortening of the fracture had a small negative effect on the outcome. Conservative management should remain the mainstay of management for fractures of the clavicle in this age group. Level of Evidence: Level IV—retrospective case series.

28 March 2022 in Knee Surgery, Sports Traumatology, Arthroscopy
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Journal Article
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TSTruls Straume-Næsheim
Truls Straume-Næsheim
PRPer-Henrik Randsborg
Per-Henrik Randsborg
JMJan Rune Mikaelsen
Jan Rune Mikaelsen
AÅAsbjørn Årøen
Asbjørn Årøen
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.Level of evidence: 1.

20 February 2019 in Journal of Bone and Joint Surgery
Verified
Journal Article
Closed access
OHOla-Lars Hammer
Ola-Lars Hammer
SCStåle Clementsen
Ståle Clementsen
JHJoakim Hast
Joakim Hast
JBJūratė Šaltytė Benth
Jūratė Šaltytė Benth
JMJan Erik Madsen
Jan Erik Madsen
PRPer-Henrik Randsborg
Per-Henrik Randsborg
Background: The aim of the study was to compare the functional outcomes following fixation with a volar locking plate (VLP) with those outcomes after augmented external fixation (EF) of displaced, intra-articular distal radial fractures in patients 18 to 70 years of age. Methods: Following inclusion, randomization, and surgery, clinical examination and outcome assessments were conducted at 6 weeks, 12 weeks, 6 months, 1 year, and 2 years. The primary outcome was the Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) score, and secondary outcomes included wrist range of motion, grip strength, and pain assessed with a visual analog scale (VAS). Results: Over a span of 3 years, 166 patients were included in the study. The mean age was 55.0 years (standard deviation [SD] = 11.5 years), with the ages distributed evenly in each treatment group by block randomization (84 patients in the VLP group and 82 in the EF group). The patients in the VLP group had a significantly better mean QuickDASH score, range of motion, and grip strength at 6 weeks, 12 weeks, 6 months, and 1 year. There were no significant differences between the groups at 2 years. On the basis of the minimal clinically important difference, the difference in the QuickDASH score was clinically relevant only at 6 weeks and arguably at 3 months (9.2 and 8.5 points, respectively). Therefore, the statistically significant improvement in the functional outcome of VLP compared with that of EF cannot be safely said to have clinical relevance beyond 12 weeks. The overall complication rate was comparable between the 2 groups. The rate of follow-up at 2 years was 97.0%. Conclusions: VLP fixation resulted in faster recovery of function compared with EF, but no functional advantage was demonstrated at 2 years. Level of Evidence: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.