[Preliminary study on treating patellar instability guided by arthroscopy].
OBJECTIVE
To explore the operation method in treating patellar instability guided by arthroscopy and to evaluate its therapeutic effects.


METHODS
Thirty-two patients (34 knees) with patellar instability including 2 patellar tilt (2 knees), 26 (27 knees) patellar subluxation, and 4 (5 knees) patellar dislocation, diagnosed by clinical and arthroscopical standard, were treated with anterior transfer of the gracilis or medial transfer of the tibial tuberosity based on the lateral retinacular release and medial tightening.


RESULTS
Twenty-eight patients were followed up for 5-87 (mean 36.6) months. The excellence rates was 92.8%.


CONCLUSIONS
The patellofemoral alignment can be seen directly and dynamically under the arthroscopy. The combinational treatment including anterior transfer of the gracilis in repairing patellar instability can avoid the recurrence effectively and get satisfactory results.
Chen
You
Y
Department of Orthopaedics, Second Xiangya Hospital, Central South University, Changsha 410011, China. chenyou137y@sina.com
Deng
Zhan-sheng
ZS
Zhang
Wei
W
Li
Ju-yuan
JY
D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D002648:Child; D046789:Chondromalacia Patellae / Q000150:complications; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000601:surgery*; D007718:Knee Injuries / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000293:injuries*; D031222:Patellar Dislocation / Q000150:complications*