A member asked:

Behind my knees there's a small muscle that are very sore. hard to stretch legs. been sore for a long time, now aches at night. shld i stretch more?

A doctor has provided 1 answer
Dr. Michael P Vaughn answered

Specializes in Allergy and Immunology

Baker's cyst: See your physician for an examination, ask about an a possible fluid filled sac that can cause a hard mass behind the knee.

Answered 4/1/2015

4.8k views

Thank

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