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KMID : 1037920170040010028
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Arthroscopy and Orthopedic Sports Medicine
2017 Volume.4 No. 1 p.28 ~ p.33
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Revision surgery for recurrent lateral patellar dislocation despite proximal realignment: a report of three cases
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Kim You-Keun
Lim Hyung-Mook
Oh Min-Joon
Yoo Jae-Doo
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Abstract
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To remind physicians of the importance of thorough preoperative planning, we reviewed 3 cases of recurrent lateral patellar dislocation despite proximal realignment. The purpose of this study was to evaluate the reasons for the recalcitrant dislocations and to report the outcomes of the revision surgery. This study describes retrospectively a series of 9 cases consisting of patients who underwent revision surgery for recurrent patellar dislocations in spite of a previous treatment of proximal realignment. The following 5 pairs of revision-initial surgery were performed among our 9 patients to treat the recurrent patellar dislocations: (1) trochleoplasty after medial patellofemoral ligament repair in 1 patient; (2) tibial tuberosity transfer after medial patellofemoral ligament reconstruction in 2; (3) tibial tuberosity transfer and medial patellofemoral ligament reconstruction after medial patellofemoral ligament repair in 3; (4) medial patellofemoral ligament reconstruction after lateral release and medial imbrications in 2; and (5) tibial tuberosity transfer, medial patellofemoral ligament reconstruction, and distal femoral varization osteotomy after arthroscopic lateral retinacular release and medial imbrications in 1. Making detailed preoperative evaluations is very important when planning surgeries of recurrent patella dislocations. In light of our experience, the most common cause of recurrent patellar dislocations was inadequate preoperative planning, which leads especially to underestimation of the tibial tuberosity-trochlear groove distance.
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KEYWORD
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Recurrent lateral patellar dislocation, Proximal realignment surgery
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