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Quadriceps weakness can be caused by various injuries to the knee or hips, acquired myopathies (diseases that affect muscle tissue) such as Lyme disease and poliomyelitis, inherited myopathies such as certain muscular dystrophies and stroke, or neurological diseases such as multiple sclerosis or Bellâs palsy.
In quadriceps, those are: rectus femoris, vastus medialis, vastus intermedius and vastus lateralis. They can be pulled, strained or teared, but the pain in all those cases is without a doubt located in the front of the thigh. Pull or strain cause dull pain, but in the case of the quadriceps tear, there is sharp pain, bruising, and swelling on the thigh. Causes and Treatment of Quadriceps Pain. Quadriceps can get pulled or strained in cases when the hamstrings overpower the quadriceps. It often happens in runners, especially in sprinters.