Follow-up study of the surgical treatment in various types of patellar dislocation.

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This is a follow-up study of surgically treated dislocation of the 14 knees (9 habitual, 4 permanent, and one recurrent dislocation) in 9 patients.The average follow-up period of nine habitual dislocations was 4 years and 9 months. The results were satisfactory in all regardless of surgical procedures (dynamic semitendinous tendon transfer, medial displacement of the tibial tuberosity etc).The follow-up periods of four permanent dislocations were more than six years. These were treated by dynamic transfer of the semitendinous tendon (Uesaki's procedure). The results were satisfactory in two knees, redislocation in one knee (hypochondroplasia), and progression of osteoarthritic change of the P-F joint in one knee (spondylometaphyseal dysplasia, SMD).The follow-up period of one recurrent dislocation (left knee of SMD patient) was 6 years and 5 months. Osteoarthritic changes of the P-F joint progressed slightly.In conclusion, the dynamic semitendinous tendon transfer (Uesaki's procedure) is effective to keep the patella in functional position in the treatment of all types of patellar dislocation.
西日本整形・災害外科学会の論文