Jos Sujit, Paul Prannoy, Antony J, Dutta Durlav Jyoti, Samuel Samson, Mathew Jerson John
Department of Orthopedic Surgery, M.O.S.C Medical College Hospital, Ernakulam, Kerala, India.
Department of Radiology, M.O.S.C Medical College Hospital, Ernakulam, Kerala, India.
J Orthop Case Rep. 2025 Aug;15(8):178-183. doi: 10.13107/jocr.2025.v15.i08.5932.
Patellar instability is a complex condition that may be caused by a variety of factors. This case report discusses a case of recurrent patellar instability due to genu valgum, trochlear dysplasia, and medial patellofemoral ligament (MPFL) tear.
A 16-year-old boy presented with recurrent patellar instability with a deformity of the right knee for 3 years. Investigations revealed a genu valgum, Dejour type D trochlear dysplasia, and an MPFL tear. He was treated with a medial closing wedge distal femoral osteotomy (DFO), subchondral deepening trochleoplasty, and an MPFL reconstruction as a single procedure. Patient is at 1-year follow-up with good clinical outcomes.
Combined trochleoplasty, DFO, and MPFL reconstruction, though technically demanding, provides good results in patients with recurrent patellar instability caused due to a genu valgum and trochlear dysplasia.
髌骨不稳定是一种复杂的病症,可能由多种因素引起。本病例报告讨论了一例因膝外翻、滑车发育不良和髌股内侧韧带(MPFL)撕裂导致的复发性髌骨不稳定病例。
一名16岁男孩因右膝畸形出现复发性髌骨不稳定3年。检查发现膝外翻、Dejour D型滑车发育不良和MPFL撕裂。他接受了股骨远端内侧闭合楔形截骨术(DFO)、软骨下滑车加深成形术和MPFL重建术,作为单一手术进行治疗。患者随访1年,临床效果良好。
尽管技术要求较高,但联合滑车成形术、DFO和MPFL重建术在因膝外翻和滑车发育不良导致复发性髌骨不稳定的患者中能取得良好效果。