Morphological abnormalities in patients with patellar malalignment syndrome.

概要

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Roentgenographic measurements were carried out on 56 knees in 34 patients suffering from patello-femoral (PF) disorders. Twenty-six knees of 13 apparently normal volunteers without any signs or symptoms in their PF joints were also measured for control.<BR>The items to be measured were selected as follows : the posterior inclination angle of the tibial plateau and the LT/LP value from the lateral view of the knee, the femorotibial (FT) angle, the location of the tibial tubercle, and the location of the cross-sectional center of the rectus femoris muscle in the coronal plane as determined by a computer-aided tomography scanner.<BR>Every difference of the items above between the two groups was found to be statistically significant except the FT angle. Remarkable difference was found between the locations of the cross sectional center of the rectus femoris muscle and between the locations of the tibial tubercle.<BR>The cause of the PF malalignment was considered to be the laterally deviated location of the tibial tubercle and the laterally located cross-sectional center of the rectus femoris muscle. Evaluation of these anatomical factors would provide more scientific basis for the treatment of PF disorders.
日本関節病学会の論文