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Outcomes of medial patellofemoral ligament reconstruction and tibial tubercle osteotomy in syndromic adolescents with patellar dislocation.

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Background Treatment of congenital and habitual dislocation of the patella in syndromic adolescents can be difficult due to accompanying soft-tissue and/or osseous abnormalities often present in the knee. The aim… Click to show full abstract

Background Treatment of congenital and habitual dislocation of the patella in syndromic adolescents can be difficult due to accompanying soft-tissue and/or osseous abnormalities often present in the knee. The aim of this study was to report the results of surgical treatment of congenital and habitual patellar dislocation with medial patellofemoral ligament (MPFL) reconstruction and tibial tubercle osteotomy (TTO) in adolescents with an underlying syndrome. Methods Syndromic adolescent patients with congenital or habitual patellar dislocation treated with MPFL reconstruction and TTO between 2005 and 2019 with a minimum of one year of follow-up were identified. Demographic, clinical, radiographic, and surgical data were recorded, and any complications were noted. Kujala and Lysholm scores were used to quantitate knee function. Results Seventeen knees in 11 patients met the criteria for inclusion. The mean age at operation was 14.8 years (range, 13.3-18.3 years). Patients were identified as having Ehlers-Danlos (four), Down (two), trichorhinophalangeal (one), McCune-Albright (one), Klippel-Feil (one), and generalized joint hypermobility (two) syndromes. The mean follow-up was 2.2 years for each individual knee (range, 1-5.9 years). The mean Kujala score increased from 56 ± 10 preoperatively to 86 ± 6 at the most recent postoperative visit (p < 0.001). The mean Lysholm score increased from 53 ± 10 preoperatively to 85 ± 7 at the most recent postoperative visit (p < 0.001). Knee flexion increased significantly from 117° ± 15° preoperatively to 154° ± 13° postoperatively (p < 0.001). However, knee extension was no different pre- and postoperatively (4° ± 8° vs. 1° ± 4°, respectively, p = 0.2). Conclusions Congenital and habitual patellar dislocation in adolescent-aged patients with an underlying syndromic diagnosis can be successfully treated with MPFL reconstruction combined with TTO.

Keywords: congenital habitual; reconstruction; medial patellofemoral; syndromic adolescents; patellar dislocation; dislocation

Journal Title: Journal of clinical orthopaedics and trauma
Year Published: 2022

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