Document Detail

Ground reaction forces, bone characteristics, and tibial stress fracture in male runners.
MedLine Citation:
PMID:  10449008     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Tibial stress fracture is a common overuse running injury resulting from repetitive mechanical loading. This research project aimed to determine whether runners with a history of tibial stress fracture (TSF) differ in tibial bone geometry, tibial bone mass, and ground reaction force (GRF) parameters during running from those who have never sustained a stress fracture (NSF). METHODS: Forty-six male running athletes (23 TSF; 23 NSF) ranging in age from 18 to 42 yr were recruited for this cross-sectional study. A force platform was used to measure selected GRF parameters (peak and time to peak for vertical impact force, vertical active force, and horizontal braking force) during running at 4.0 m x s(-1). Tibial bone geometry (cross-sectional dimensions and area) was calculated from a computerized tomography (CT) scan at the junction of the middle and distal thirds. Dual energy x-ray absorptiometry (DXA) provided measurements of tibial bone area, bone mineral content (BMC), and bone mineral density (BMD). RESULTS: The TSF group had significantly smaller tibial cross-sectional area (P = 0.02) and DXA tibial bone area (P = 0.02), after adjusting for height and weight, than the NSF group. There were no significant differences between groups for GRF, tibial BMC, or tibial BMD. CONCLUSION: These findings support the contention that bone geometry plays a role in stress fracture development and that male athletes with smaller bones in relation to body size are at greater risk for this bony injury.
K Crossley; K L Bennell; T Wrigley; B W Oakes
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  31     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-09-16     Completed Date:  1999-09-16     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1088-93     Citation Subset:  IM; S    
School of Physiotherapy, The University of Melbourne, Parkville, Victoria, Australia.
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MeSH Terms
Absorptiometry, Photon
Bone Density
Cross-Sectional Studies
Fractures, Stress / physiopathology*,  radiography
Running* / injuries,  physiology
Tibial Fractures / physiopathology*,  radiography

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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