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Am J Sports Med. 2007 Jul;35(7):1180-7. Epub 2007 Mar 16.

Results of arthroscopic medial retinacular release for treatment of medial subluxation of the patella.

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  • 1Department of Orthopedics and Rehabilitation, University of Wisconsin, Madison, Wisconsin 53792, USA.

Abstract

BACKGROUND:

Medial subluxation of the patella is a rare, disabling condition that has iatrogenic and traumatic causation. To date, only open reconstructions have been reported for operative treatment of this condition, but these procedures have a high rate of complications, revisions, and subsequent surgery. This is the first study to present the results of arthroscopic medial retinacular release for treatment of this problem.

HYPOTHESIS:

Arthroscopic release will alleviate painful medial patellar subluxation.

STUDY DESIGN:

Case series; Level of evidence, 4.

METHODS:

Nine knees (7 patients) with painful, recurrent medial subluxation of the patella that occurred spontaneously (2 knees) or after a lateral release (5 knees) or an injury (2 knees) were treated with an arthroscopic medial retinacular release. The retinaculum was released 2 cm medial to the superior pole of the patella down to the anteromedial portal. At a mean follow-up of 2.7 years (range, 1-8 years), all knees were evaluated, and the results were graded according to the Merchant and Mercer rating scale.

RESULTS:

The mean age of the patients was 25 years (range, 15-38 years), and the mean duration of the subluxations before surgery was 28 months (range, 6-48 months). In all 7 patients (9 knees), the medial release relieved their medial subluxation and knee pain, and there were 6 excellent and 3 good results. There were no complications or further realignment surgery needed after this procedure.

CONCLUSION:

An arthroscopic medial retinacular release will successfully treat painful medial subluxation of the patella.

PMID:
17369561
[PubMed - indexed for MEDLINE]
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