Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients

Purpose. The present study reports a long-term follow-up of acute primary patellar dislocation in patients with open physes. The purpose of the study was to evaluate knee function and recurrence rates after surgical and nonsurgical treatment of patellar dislocation. Methods. A total of 51 patients,...

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Main Authors: Eva Bengtsson Moström, Christina Mikkelsen, Lars Weidenhielm, Per-Mats Janarv
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2014/473281
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author Eva Bengtsson Moström
Christina Mikkelsen
Lars Weidenhielm
Per-Mats Janarv
author_facet Eva Bengtsson Moström
Christina Mikkelsen
Lars Weidenhielm
Per-Mats Janarv
author_sort Eva Bengtsson Moström
collection DOAJ
description Purpose. The present study reports a long-term follow-up of acute primary patellar dislocation in patients with open physes. The purpose of the study was to evaluate knee function and recurrence rates after surgical and nonsurgical treatment of patellar dislocation. Methods. A total of 51 patients, including 29 girls and 22 boys, who were 9–14 years of age at the time of injury, were retrospectively evaluated. The minimum follow-up time was 5 years. Thigh muscle torque, range of motion, the squat test, the knee injury and osteoarthritis outcome score (KOOS), the Kujala score, and the recurrence rate were registered. Radiological predisposing factors at the time of injury were determined. Results. Quality of life and sports/recreation were the most affected subscales, according to KOOS, and a reduced Kujala score was also observed in all treatment groups. The surgically treated patients had a significantly lower recurrence rate. Those patients also exhibited reduced muscle performance, with a hamstring to quadriceps ratio (H/Q) of 1.03. The recurrence rate was not correlated with knee function. Conclusions. Patellar dislocation in children influences subjective knee function in the long term. Surgery appears to reduce the recurrence rate, but subjective knee function was not restored.
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series The Scientific World Journal
spelling doaj-art-751c00b44ec943b984ba06b49cf0c8a42025-08-20T03:33:32ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/473281473281Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature PatientsEva Bengtsson Moström0Christina Mikkelsen1Lars Weidenhielm2Per-Mats Janarv3Department of Women’s and Children’s Health, Karolinska Institutet, 171 76 Stockholm, SwedenDepartment of Molecular Medicine and Surgery, Stockholm Sports Trauma Research Center, Karolinska Institutet, 17176 Stockholm, SwedenDepartment of Molecular Medicine and Surgery, Stockholm Sports Trauma Research Center, Karolinska Institutet, 17176 Stockholm, SwedenDepartment of Women’s and Children’s Health, Karolinska Institutet, 171 76 Stockholm, SwedenPurpose. The present study reports a long-term follow-up of acute primary patellar dislocation in patients with open physes. The purpose of the study was to evaluate knee function and recurrence rates after surgical and nonsurgical treatment of patellar dislocation. Methods. A total of 51 patients, including 29 girls and 22 boys, who were 9–14 years of age at the time of injury, were retrospectively evaluated. The minimum follow-up time was 5 years. Thigh muscle torque, range of motion, the squat test, the knee injury and osteoarthritis outcome score (KOOS), the Kujala score, and the recurrence rate were registered. Radiological predisposing factors at the time of injury were determined. Results. Quality of life and sports/recreation were the most affected subscales, according to KOOS, and a reduced Kujala score was also observed in all treatment groups. The surgically treated patients had a significantly lower recurrence rate. Those patients also exhibited reduced muscle performance, with a hamstring to quadriceps ratio (H/Q) of 1.03. The recurrence rate was not correlated with knee function. Conclusions. Patellar dislocation in children influences subjective knee function in the long term. Surgery appears to reduce the recurrence rate, but subjective knee function was not restored.http://dx.doi.org/10.1155/2014/473281
spellingShingle Eva Bengtsson Moström
Christina Mikkelsen
Lars Weidenhielm
Per-Mats Janarv
Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
The Scientific World Journal
title Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
title_full Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
title_fullStr Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
title_full_unstemmed Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
title_short Long-Term Follow-Up of Nonoperatively and Operatively Treated Acute Primary Patellar Dislocation in Skeletally Immature Patients
title_sort long term follow up of nonoperatively and operatively treated acute primary patellar dislocation in skeletally immature patients
url http://dx.doi.org/10.1155/2014/473281
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AT christinamikkelsen longtermfollowupofnonoperativelyandoperativelytreatedacuteprimarypatellardislocationinskeletallyimmaturepatients
AT larsweidenhielm longtermfollowupofnonoperativelyandoperativelytreatedacuteprimarypatellardislocationinskeletallyimmaturepatients
AT permatsjanarv longtermfollowupofnonoperativelyandoperativelytreatedacuteprimarypatellardislocationinskeletallyimmaturepatients