Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.
Mod Rheumatol Case Rep. 2020 Jan;4(1):135-140. doi: 10.1080/24725625.2019.1638048. Epub 2019 Jul 22.
Deepening trochleoplasty combined with other patella stabilization procedures is often performed to correct patellar instability with trochlear dysplasia. However, various complications following trochleoplasty including patellofemoral osteoarthritis and anterior knee pain can be negative factors affecting the clinical results. Here, we describe two cases of chronic patellar instability with trochlear dysplasia on whom we performed patellofemoral arthroplasty (PFA), instead of trochleoplasty, in conjunction with medial patellofemoral ligament (MPFL) reconstruction. In both cases, PFA, acting as metallic trochleoplasty, improved the congruency of patellofemoral joint, and achieved good clinical results for up to 3 years postoperatively without recurrent patellar instability. This procedure could be considered as one option for cases of chronic patellar instability with trochlear dysplasia.
我们对 2 例合并滑车发育不良的慢性髌骨不稳患者实施髌股关节置换术（patellofemoral arthroplasty，PFA）联合内侧髌股韧带（medial patellofemoral ligament，MPFL）重建术，而未行滑车加深成形术。在这 2 例患者中，PFA 作为金属滑车成形术改善了髌股关节的吻合度，且术后 3 年随访无复发性髌骨不稳，取得了良好的临床效果。对于合并滑车发育不良的慢性髌骨不稳患者，该术式可作为一种选择。
