Sportfähigkeit nach Patellaluxation

A dislocation of the patella is a serious injury which can far affect the career of every athlete or even finish it. In a retrospective study we examined 24 athletes (mean age 19.3 years, post surgical observation period 39 (13 to 79) months) which suffered from a patellar dislocation and received arthroscopic surgical treatment. The diagnostics contained clinical investigation and X-rays of the knee joint in 2 plains as well as patella tangential, in pathological axial deformations of the leg completed with whole-leg-images and optional a torsion computed tomography. All 24 patients received an arthroscopical assisted suturing of the medial retinaculum, in 12 patients additional a lateral release was carried out. The postoperative course followed a standard pattern. In 24 operated patients the reoccurrence rate was 12.5 % (3 patients), which is within the range of the latest published figures (average 12.0 %). The Lysholm score was in 15 (62.4 %) of all patients higher than 80 demonstrating the good to very good results, the average Lysholm score was 83.4. Out of 24 patients with patellar dislocation 11 patients (45.8 %) were able to continue their sport career after surgical therapy at the pre-trauma level, 4 patients (16.6 %) had to continue at lower level, 9 patients (37.5 %) had to finish their sport career. The Tegner activity score decreased from 7.2 to 6.0 at about 1.2 points what means a clear decrease of the activity level. On average a full sportive level was reached 9.7 months after surgery. Especially sport athletes needs to be informed about the seriousness of the injury and the long process of rehabilitation.