Document Detail


Regional bone geometry of the tibia in triathletes and stress reactions-An observational study.
MedLine Citation:
PMID:  23684371     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: The association between tibial morphology and tibial stress fractures or tibial stress syndrome was examined in triathletes with an unusually high incidence of these injuries. DESIGN: A cross-sectional study design examined associations between tibial geometry from MRI images and training and injury data between male and female triathletes and between stress fracture (SF) and non-stress fracture (NSF) groups. METHODS: Fifteen athletes (7 females, 8 males) aged 17-23 years who were currently able to train and race were recruited from the New Zealand Triathlete Elite Development Squad. Geometric measurements were taken at 5 zones along the tibia using MRI and compared between symptomatic and asymptomatic tibiae subjects. RESULTS: SF tibiae displayed either oedema within the cancellous bone and/or stress fracture on MRI. When collapsed across levels, symptomatic tibiae had thicker medial cortices (F1,140=9.285, p=0.003), thicker lateral cortices (F1,140=10.129, p=0.002) and thinner anterior cortices (F1,140=14.517, p=0.000) than NSF tibiae. Only medial cortex thickness in SF tibia was significantly different (F4,140=3.358, p=0.012) at different levels. Follow-up analysis showed that athletes showing oedema within the cancellous bone and/or stress fracture on MRI had, within 2 years of analysis, subsequently taken time off training and racing due a tibial stress fracture. CONCLUSIONS: The thinner anterior cortex in SF tibiae is associated with a stress reaction in these triathletes.
Authors:
Richard J Newsham-West; Brett Lyons; Peter D Milburn
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-5-15
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  -     ISSN:  1878-1861     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-5-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Centre for Musculoskeletal Research, School of Physiotherapy and Exercise Science, Griffith Health Institute, Griffith University, Australia. Electronic address: r.newsham-west@griffith.edu.au.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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