ASSOCIATION BETWEEN HIP AND HINDFOOT DYNAMIC ALIGNMENT AND DYNAMIC KNEE VALGUS IN HIGH SCHOOL FEMALE BASKETBALL PLAYERS
- VernacularTitle:高校女子バスケットボール選手の股関節外転筋・後足部機能とKnee in および Hip out の関係について
- Author:
YOSHINORI KAGAYA
;
HIDETSUGU NISHIZONO
;
YASUNARI FUJII
- Publication Type:Journal Article
- Keywords:
risk factor of ACL injuries;
valgus knee alignment;
screening test;
hip function;
hindfoot function
- From:Japanese Journal of Physical Fitness and Sports Medicine
2009;58(1):55-62
- CountryJapan
- Language:Japanese
-
Abstract:
Dynamic knee valgus is considered a risk factor of noncontact ACL injuries. The aim of this study was to determine the association between hip and hindfoot dynamic alignment and dynamic knee valgus.This cross-sectional study involved 88 high school female basketball players (175 legs). Subjects performed single-leg squatting and drop landing which provided a hip-out distance (HOD) and a knee-in distance (KID) via 2D video images. Hip and hindfoot dynamic alignment was evaluated by a dynamic Trendelenburg test (DTT) and a heel-floor test (HFT), respectively, during squatting and landing.The DTT-positive group (dynamic hip mal-alignment with lower non-weightbearing pelvis) demonstrated greater HOD and KID values for both squatting (p＜0.001) and landing (p＜0.001) than the DTT-negative group. The HFT-positive group (5o or greater hindfoot valgus) demonstrated greater KID values for both squatting (p＜0.01) and landing (p＜0.001), but smaller HOD value for squatting (p＜0.01) than the HFT-negative group.In conclusion, dynamic hip mal-alignment may be associated with both greater HOD and KID, but hindfoot valgus only with greater KID.
