Does loud cracking sound behind my knee while exercising mean a knee sprain or tear?
Patient: Hi Doctor, Thank you for your time. Approx. 3 weeks ago I was doing a circuit training in the gym and while jumping sideways I felt and heard a loud crack behind my knee. Suddenly I was unable to continue and was in pain. I struggled to walk on this leg. Three weeks later the pain has eased, am able to walk but still feeling pain and weakness in my knee. Was wondering if perhaps I have a tear of some type or just a knee sprain? Doctor: Hi I have seen your injury description . In my opinion you have most likely injury of Posterior Cruciate ligament of the knee .Second possibility is hamstring strain. In post Cruciate ligament injury the knee gives problem in future while hamstring injury normally heals well. I suggest you get an MRI Knee done to R/O Post Cruciate ligament Injury.