Background Patellar malalignment is one of the most important reason of anterior knee pain and is determined by Q angle measurement. Q angle is defined as the angle between quadriceps muscle and patellar tendon. It is approximately 13 degrees in male and 18 degrees in female.
Objectives The first aim of this study is to determine Q angle differences in supine and upright position. The second aim is to evaluate Q angle differences in person who have hyperlaxity compared to healthy ones.
Methods In this study,253 healthy person was evaluated according to hyperlaxity and Q angle degrees. The measurements of hyperlaxity was carried out by using Beighton scoring system. According to the scores 5 and over 20 cases, less than 5 20 cases and finally other 20 cases in whom the laxity score was 0 degree were accepted as a control group.
We use one way Annova method to compare Q angle degrees in supine and upright position.
TUKEY-HSD test was applied to show relation between hyperlaxity and Q angle.
Results Standing and supine position Q angle values were not found statistically significant.(p > 0.05) However hyperlaxity more than 5 (According to Beighton score was found statistically significant compared to control group.
Conclusion In our study we concluded that;
There is no difference between supine and upright position Q angle values
There is significantly corelation between hyperlaxity and Q angle values
Graham R. Regional and heritable bone and collagen diseases: Hypermobility syndrome. In: Dieppe PA, Klippel HJ, eds. Rheumatology. London: Mosby, 1998;8:51–2
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