Many reasons: A quadriceps strain or pull could do that. Quadriceps tendonitis is the inflammation of the tendon that connects the quadriceps muscles to the knee. Injection site inflammation.
Answered 3/12/2013
5.3k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question