Lateral Structure Release for the Treatment of Mild to Moderate Habitual Dislocation of Patella: A Retrospective Study / 中国运动医学杂志

ABSTRACT

Objectives To evaluate the clinical outcome of lateral structure release in the treatment of patients with mild or moderate habitual dislocation of patella(HDP).Methods From 51 HDP patients undergoing surgical treatment between April 2010 and 2014,23 patients were chosen and given the lateral structure release,including isolated lateral retinaculum release (LRR) and LRR combined with vastus lateralis oblique(VLO) lengthening.Other auxiliary surgeries included medial patellofemoral ligament(MPFL) reconstruction and tibial tubercle medialization.Radiological,objective and subjective evaluations were performed at 4 and 8 weeks,as well as and 1 year after the surgery and every year afterwards.Results There were 21 patients followed for a minimum of 2 years.Their average age was 25.0 + 7.4 years (ranging from 17 to 38 years old),and the mean follow-up period was 30.5 ± 5.8months(ranging from 24 to 36 months).Isolated LRR was performed in 42.9％(9/21) of the patients,and LRR combined with VLO lengthening was performed in 57.1％(12/21) of them.No redislocation was reported.Significant improvement was observed in the subjective evaluation score.Conclusions For patients with mild to moderate HDP,lateral structure release can achieve satisfactory results.