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The Journal of Bone & Joint Surgery British Volume
Vol. 87-B, Issue 11 | Pages 1498 - 1501
1 Nov 2005
Grelsamer RP Dubey A Weinstein CH

The Q angle is an important determinant of patellar tracking, though its clinical relevance is debatable. One controversy centres around any possible differences in its value between men and women. The accepted, though unproven explanation, for the greater Q angle in women is that a woman has a wider pelvis. However, because of the long distance between the pelvis and patella, relative to the distance from the patella to the tibial tuberosity, large changes in the position of the anterior superior iliac spine are necessary to effect significant changes in the Q angle. In our study of 69 subjects, we did not find such large differences in the position of the anterior superior iliac spine, and found a mean difference of only 2.3° between the Q angles of men and women.

Furthermore, we found that men and women of equal height demonstrated similar Q angles, with taller people having slightly smaller Q angles. The slight difference in Q angles between men and women can be explained by the fact that men tend to be taller.


The Journal of Bone & Joint Surgery British Volume
Vol. 83-B, Issue 5 | Pages 772 - 774
1 Jul 2001
GRELSAMER RP


The Journal of Bone & Joint Surgery British Volume
Vol. 78-B, Issue 5 | Pages 853 - 853
1 Sep 1996
GRELSAMER RP