Association of quadriceps angle with plantar pressure distribution, navicular height and calcaneo-tibial angle

Özet

Objective: The aim of study was to analyze the association between Quadriceps Angle (QA) and plantarpressure, navicular height (NH), and calcaneo-tibial angle (CTA).Methods: A total of 64 volunteers (mean age: 22.25 ± 2.54 (range:19e33)) participated in this crosssectional study. EMED-m (Novel GmbH, Germany) electronic pedobarograph was employed for dynamicplantar pressure measurement using two step protocol. The angle between the vertical axis of calcaneusand the long axis of Achilles tendon for CTA. The height of navicular tubercle from the ground wasmeasured while the subject was standing on both feet for NH. QA was measured while the subject wasstanding in a relaxed posture where both feet bearing equal weight.Results: There were significant negative correlations between QA and maximum force (MxF) under the4th. metatarsal head (MH4). The QA was also significantly correlated with MxF and force-time integral(FTI) under the bigtoe (BT). FTI under the 3rd. metatarsal head (MH3), MH4 and 5th. metatarsal head(MH5) were significantly negatively correlated with QA. Pressure-time integral (PTI) under the MH4 andMH5 were found to be significantly negatively correlated with QA. A significant correlation was also foundbetween QA and NH (p < 0.0001), whilst there was no correlation between QA and CTA. Regressionanalysis showed that NH was appeared as the major contributor for the QA (b ¼ 0.49, p < 0.001) in thedynamic condition, followed by BT-FTI (b ¼ 0.37, p < 0.001) and MH5-MxF (b ¼ 0.21, p < 0.037).Conclusion: These findings may imply that the NH which can at least be controlled by appropriate shoeinserts may affect QA. This way, loading pattern of both plantar region and whole lower extremity maybe altered.