Could be trouble: Since you asked about singular knee I am concerned! if both were same this is frequently normal but not for just one knee. If you have injured this knee in past this could be a PCL tear. It needs to be examined by an orthopaedic surgeon.
Answered 1/12/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
8 doctors weighed in across 2 answers
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