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. 1979 May;61-B(2):169-71.
doi: 10.1302/0301-620X.61B2.438268.

An electromyographic investigation of subluxation of the patella

P P Mariani, I Caruso

An electromyographic investigation of subluxation of the patella

P P Mariani et al. J Bone Joint Surg Br. 1979 May.

Abstract

An electromyographic investigation of patients with subluxation of the patella has been carried out on the parts of the extensor apparatus which actively contribute to the alignment of the patella, both before and after the operation to correct this disorder. The electromyographic pictures have revealed a sharp fall in the activity of the vastus medialis, with full recovery to normal values after a corrective operation. Even if the aligning function of the patella is altered by a variety of factors, the present study confirms the importance of the vastus medialis in the pathogenesis of malalignment of the extensor mechanism.

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