A new method using computed tomographic scan to measure the rectus femoris-patellar tendon Q-angle comparison with conventional method.
The Q-angle should be the angle generated by a line connecting the anteroinferior iliac spine (AIIS), the bottom of the groove of the femoral condyle, and the tibial tubercle. The Q-angle was measured by computed tomography (CT) in 43 lower limbs with recurrent patellar dislocation and 26 normal controls. The mean Q-angle was 20 degrees in the dislocated group and 13 degrees in controls, a significant difference. No significant difference was found in the Q-angle between the dislocated and control groups using the conventional method. Lower limb rotation had little effect on accuracy of the method.
Ando
T
T
Department of Orthopaedic Surgery, Osaka Rosai Hospital, Sakai, Japan.
Hirose
H
H
Inoue
M
M
Shino
K
K
Doi
T
T
D000293:Adolescent; D000328:Adult; D000886:Anthropometry / Q000379:methods; D005069:Evaluation Studies as Topic; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007085:Ilium / Q000000981:diagnostic imaging* / Q000473:pathology; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries* / Q000473:pathology; D012008:Recurrence; D015203:Reproducibility of Results; D013710:Tendons / Q000000981:diagnostic imaging* / Q000473:pathology; D013977:Tibia / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed