Superior dislocation of the patella: a case report.

Authors :: Cusco X
Seijas R
Ares O
Cugat JR
Garcia-Balletbo M
Cugat R
Source :: Journal of orthopaedic surgery and research [J Orthop Surg Res] 2009 Jul 30; Vol. 4, pp. 29. Date of Electronic Publication: 2009 Jul 30.
Publication Year :: 2009
Abstract: Background: Superior dislocation of the patella is an uncommon condition that mainly occurs in knees with a high patella and medial femorotibial degenerative arthritis. There are no previous reports of this condition occurring in association with tibial valgus osteotomy.<br />Case Report: We report the case of a patient in whom vertical dislocation recurred twice at 4 months after tibial valgus osteotomy. To avert additional recurrence or new dislocations, the patient was treated surgically to remove the existing osteophytes.<br />Conclusions: An arthroscopic approach was decided because of the lower associated morbidity and good results with this technique compared to open surgery.