Jock Doc

A wobbly knee may indicate torn ligament

Q. Last night I was playing softball and twisted my right knee while batting. I felt a pain deep in my knee and behind it and then while running to first base my right knee felt wobbly. At that point I stopped playing and put ice on my knee. It swelled some. I was concerned and went to the emergency room where X-rays were taken. I was told there was nothing broken. However, my knee still feels wobbly and I wondered what could I have done and what should I do now?

A. I recommend you see an orthopedic surgeon for evaluation and treatment of your knee. The description you give of twisting the knee and having it feel wobbly and unstable may mean that you injured one of your ligaments, most likely your anterior cruciate ligament or ACL.

There are four ligaments that give you stability to the knee: the MCL on the inside part of the knee; the LCL on the outside part of the knee; and the ACL and PCL, which cross deep inside the knee itself. Injuries to the MCL and LCL can usually heal with bracing followed by a rehab program. Injuries to the ACL or PCL usually do not have the ability to heal themselves and may require surgical reconstruction.

When injuring an ACL, it is also very common to injure one of the C-shaped shock absorbers known as the meniscus or you end up with a bone bruise on the outside part of your knee. In addition to examining your knee, your doctor likely will order an MRI scan, which is usually accurate in establishing the extent of the injuries to the ligaments and knee meniscal cartilage.

If an ACL tear is present, usually this will be treated first with a rehabilitation program to get the swelling down, restore the range of motion, and strengthen the knee prior to determining whether surgery is necessary. An accurate diagnosis is essential, so please get to your doctor quickly.

Dr. Harlan Selesnick is team physician of the Miami Heat and director of Miami Sports Medicine Fellowship, Doctors Hospital. Send your questions to