|
Year |
2001 |
|---|---|
|
Question Number |
30 |
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Category |
Select |
Question
A 22-year-old Olympic sprinter pulls up halfway through a race and grabs his midthigh. What is the most likely site of hamstring injury?
1 – Muscle belly
2 – Tendon-bone insertion distally
3 – Pelvic origin
4 – Musculotendinous junction
5 – Midsubstance of the distal tendon
Figures
Answer (click for answer)
ANSWER: 4
DISCUSSION: Muscle sprains occur at the musculotendinous junction (correct answer 4). The tendon-bone insertions via Sharpey’s fibers are perhaps the strongest areas (wrong answers 2 and 3). The midsubstance of a muscle is stronger than the musculotendinous junction (wrong answer 1).
Reference: REFERENCES: Nicholas J, Henshman E: The Lower Extremity and Spine in Sports Medicine, ed 2. St Louis, MO, Mosby, 1995, pp 999-1023.
Garrett WE Jr, Rich FR, Nikolaou PK, Vogler JB III: Computed tomography of hamstring muscle strains. Med Sci Sports Exerc 1989;21:506-514.