Diagnosis
During a physical exam, a healthcare professional presses on the affected joint, checking for swelling or tenderness. Sometimes it's possible to feel a loose piece of bone and cartilage inside the joint. Your healthcare professional also has you or your child move the joint to check the joint's range of motion.
Health care professionals stage osteochondritis dissecans by the size of the injury, whether the piece of bone and cartilage is partly or totally loose, and whether the piece stays in place.
Imaging tests
One or more of these tests can help diagnose osteochondritis dissecans:
- X-rays. X-rays show the structure of the bone and can show anything that isn't usual in the joint or in the bone.
- MRI. Using radio waves and a strong magnetic field, an MRI can make detailed images of both hard and soft tissues. These include bone and cartilage. If X-rays appear OK but you still have symptoms, you might have an MRI.
- CT scan. This joins X-ray images taken from different angles to make detailed images of structures inside the body. CT scans may help show where the loose fragments are within the joint.
Treatment
The goal of osteochondritis dissecans treatment is to help the affected joint work well and relieve pain. Treatment also lowers the risk of osteoarthritis. No one treatment works for everyone. In children whose bones are still growing, the bone may heal with rest.
Medications
Nonsteroidal antiinflammatory medicines available without a prescription can give short-term pain relief. They include ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve).
Therapy
At first, your healthcare professional may suggest the following:
- Resting the joint. Keep your child from doing activities that stress the joint, such as jumping and running with an affected knee. Your child might need to use crutches for a time, mainly if pain causes limping. Your child also might wear a splint, cast or brace to keep the joint still for a few weeks.
- Physical therapy. This therapy may include stretching, range-of-motion exercises and strengthening exercises for the muscles that support the affected joint. Healthcare professionals often suggest physical therapy after surgery as well.
Surgery
Your healthcare professional might suggest surgery if your child:
- Has a loose piece of bone and cartilage in the joint.
- Doesn't get relief from rest and physical therapy after 4 to 6 months.
Children who have stopped growing and adults with osteochondritis dissecans also often need surgery. The type of surgery depends on the size and stage of the injury.
Preparing for your appointment
You might first talk with your main healthcare professional, who might send you to a doctor who specializes in sports medicine or orthopedic surgery.
What you can do
Make a list of:
- Your or your child's symptoms and when they began.
- Key medical information, including other conditions you or your child has.
- All medicines, vitamins and supplements you or your child takes, including dosages.
- Any recent accidents or injuries that might have harmed your or your child's joints.
- Questions to ask your healthcare professional.
For osteochondritis dissecans, some questions to ask include:
- What's the most likely cause of this joint pain?
- Are there other possible causes?
- What tests can help with diagnosis?
- What treatment do you suggest?
- What can I do to keep symptoms from coming back?
Be sure to ask all the questions you have.
What to expect from your doctor
Your healthcare professional may ask you questions, such as:
- Is the joint swollen? Does it lock or give out?
- Does anything make the symptoms better or worse?
- How bad is the pain?
- Have you or your child injured the joint? If so, when?
- Do you or your child play sports? If so, which sports?