Robert A Magnussen1,2, Megan Verlage3, Elizabeth Stock4, Lauren Zurek4, David C Flanigan3,5, Marc Tompkins4,6, Julie Agel4, Elizabeth A Arendt4. 1. Department of Orthopaedics, Sports Health and Performance Institute, The Ohio State University, Columbus, OH, 43214, USA. robert.magnussen@gmail.com. 2. Sports Health and Performance Institute, The Ohio State University, Columbus, OH, USA. robert.magnussen@gmail.com. 3. Department of Orthopaedics, Sports Health and Performance Institute, The Ohio State University, Columbus, OH, 43214, USA. 4. Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, USA. 5. Sports Health and Performance Institute, The Ohio State University, Columbus, OH, USA. 6. TRIA Orthopaedic Center, Bloomington, MN, USA.
Abstract
PURPOSE: While a significant research has gone into identifying patients at highest risk of recurrence following primary patellar dislocation, there has been little work exploring the outcomes of patients who do not have a recurrent patellar dislocation. We hypothesize that patients without recurrent dislocation episodes will exhibit significantly higher KOOSs than those who suffer recurrent dislocations, but lower scores than published age-matched normative data. METHODS: A retrospective review of patients with nonoperatively treated primary lateral patellar dislocations was carried out, and patients were contacted at a mean of 3.4 years (range 1.3-5.5 years) post-injury. Information regarding subsequent treatment and recurrent dislocations along with patient-reported outcome scores and activity level was collected. RESULTS: One hundred and eleven patients (29.8 %) of 373 eligible patients agreed to study participation, seven of whom were excluded because they underwent subsequent patellar stabilization surgery on the index knee. Seventy-six patients (73.1 %) reported no further dislocation events, and the mean KOOS subscales at follow-up were: symptoms-80.2 ± 18.8, pain-81.8 ± 16.2, ADL-88.7 ± 15.9, sport/recreation-72.1 ± 24.4, and QOL-63.9 ± 23.8 at a mean follow-up of 3.3 years (range 1.3-5.5 years). No significant differences in any of the KOOS subscales were noted between these patients and the group that reported recurrent patellar dislocations. Only 26.4 % of the patients without further dislocations reported they were able to return to desired sport activities without limitations following their dislocation. CONCLUSION: Patients who do not report recurrent patellar dislocations following nonoperative treatment of primary patellar dislocations are in many cases limited by this injury 3 years following the initial dislocation event. LEVEL OF EVIDENCE: Retrospective cohort study, Level III.
PURPOSE: While a significant research has gone into identifying patients at highest risk of recurrence following primary patellar dislocation, there has been little work exploring the outcomes of patients who do not have a recurrent patellar dislocation. We hypothesize that patients without recurrent dislocation episodes will exhibit significantly higher KOOSs than those who suffer recurrent dislocations, but lower scores than published age-matched normative data. METHODS: A retrospective review of patients with nonoperatively treated primary lateral patellar dislocations was carried out, and patients were contacted at a mean of 3.4 years (range 1.3-5.5 years) post-injury. Information regarding subsequent treatment and recurrent dislocations along with patient-reported outcome scores and activity level was collected. RESULTS: One hundred and eleven patients (29.8 %) of 373 eligible patients agreed to study participation, seven of whom were excluded because they underwent subsequent patellar stabilization surgery on the index knee. Seventy-six patients (73.1 %) reported no further dislocation events, and the mean KOOS subscales at follow-up were: symptoms-80.2 ± 18.8, pain-81.8 ± 16.2, ADL-88.7 ± 15.9, sport/recreation-72.1 ± 24.4, and QOL-63.9 ± 23.8 at a mean follow-up of 3.3 years (range 1.3-5.5 years). No significant differences in any of the KOOS subscales were noted between these patients and the group that reported recurrent patellar dislocations. Only 26.4 % of the patients without further dislocations reported they were able to return to desired sport activities without limitations following their dislocation. CONCLUSION:Patients who do not report recurrent patellar dislocations following nonoperative treatment of primary patellar dislocations are in many cases limited by this injury 3 years following the initial dislocation event. LEVEL OF EVIDENCE: Retrospective cohort study, Level III.
Authors: Sauli Palmu; Pentti E Kallio; Simon T Donell; Ilkka Helenius; Yrjänä Nietosvaara Journal: J Bone Joint Surg Am Date: 2008-03 Impact factor: 5.284
Authors: Julian Mehl; Alexander Otto; Brendan Comer; Cameron Kia; Franz Liska; Elifho Obopilwe; Knut Beitzel; Andreas B Imhoff; John P Fulkerson; Florian B Imhoff Journal: Knee Surg Sports Traumatol Arthrosc Date: 2019-08-13 Impact factor: 4.342