Journal article
Hip Kinematics and Step Width in Runners With and Without Previous Knee Overuse Injury
Medicine and science in sports and exercise, Vol.44(5S), pp.254-255
01 May 2012
Abstract
Proximal biomechanical variables such as peak stance hip adduction (HADD) and pelvic width:femoral length (P:F) ratio may influence kinematics distally in the lower extremity, such as step width (SW). PURPOSE: To determine whether peak HADD, P:F ratio, and SW are different in runners with and without a history of knee overuse injury. METHODS: As part of an ongoing study, data from 8 currently healthy runners were collected. Runners with a history of patellofemoral pain syndrome (PFPS) or iliotibial band friction syndrome (ITBFS; n = 4) were matched for gender, age, and mileage with a control group (n = 4). Marker trajectories were collected using a 9 camera motion capture system sampling at 120 Hz. Participants ran at a velocity of 3.7m times s super(-1) over a 17m runway for 5 trials. Data were analyzed using descriptive statistics. RESULTS: (ProQuest: ... denotes formulae and/or non-USASCII text omitted) Runners with previous knee injury exhibited smaller peak HADD angle, smaller P:Fratio, and narrower step width than controls, indicated by the medium and large effect sizes. DISCUSSION: There are inconsistencies in the literature regarding peak stance HADD angle differences between runners with and without PFPS and ITBFS. Our preliminary data suggests HADD is smaller in runners with a history of PFPS and ITBFS compared to controls. The P:F ratio was also smaller in the previous knee injury group. Thus, a narrower step width appears to be associated with a smaller P:F ratio. The role of HADD in relation to knee injury remains unclear. CONCLUSION: Runners with a history of PFPS and ITBFS run with narrower steps compared to runners without previous knee injury.
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Details
- Title
- Hip Kinematics and Step Width in Runners With and Without Previous Knee Overuse Injury
- Creators
- Eric FochClare Milner
- Publication Details
- Medicine and science in sports and exercise, Vol.44(5S), pp.254-255
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physical Therapy (and Rehabilitation Sciences)
- Identifiers
- 991019296741304721