Related Experiment Videos
Clinical perspectives regarding eccentric muscle injury
Donald T Kirkendall1, William E Garrett
1Department of Orthopaedics, CB #7055, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599-7055, USA.
Clinical Orthopaedics and Related Research
|October 24, 2002
Summary
Muscle strain injuries, common in sports, often occur at the muscle-tendon junction. While healing, muscles are weaker and prone to re-injury, but preventive measures can increase resistance.
Area of Science:
- Sports Medicine
- Biomechanics
- Muscle Physiology
Background:
- Skeletal muscle injuries constitute over 30% of clinical cases.
- Muscle strains typically happen during high-intensity activities when muscles are stretched and activated.
- Injuries commonly occur near the distal muscle tendon junction.
Purpose of the Study:
- To investigate the mechanisms and characteristics of muscle strain injuries.
- To understand the healing process and factors influencing re-injury.
- To explore preventive strategies for muscle strain injuries.
Main Methods:
- Review of clinical data on muscle strain injuries.
- Analysis of muscle response to stretching and activation.
- Examination of muscle healing and tissue repair processes.
- Investigation of factors like muscle temperature and fatigue.
Main Results:
- Muscle strains weaken the affected muscle post-injury, increasing susceptibility to re-injury.
- An inflammatory response occurs within 1-2 days, followed by scar formation by day 7.
- Increased muscle temperature (warm-up) enhances muscle extensibility, while fatigue increases injury risk.
Conclusions:
- Muscle strain injuries are complex, involving predictable patterns and physiological responses.
- The healing process creates a vulnerable period, heightening the risk of repeat injuries.
- While complete prevention is unlikely, strategies like warming up can mitigate injury risk.