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NJ
A 33-year-old male asked:

Hard lump in the middle of a crater in the muscle under skin on inner back thigh. any idea?

1 doctor answer1 doctor weighed in
Dr. Rowlin Lichter
Orthopedic Surgery 73 years experience
Torn muscle: A torn hamstring muscle will retract and cause a defect. At either end there will be a lump of retracted muscle. Warm up before exercise. This is caused by sudden severe stress on the muscle w/o being warmed up.

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Last updated Mar 18, 2016

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