Elbow Osteochondritis Dissecans

Elbow OCD is seen most often in adolescents and young adults, particularly those who place repetitive stress across the elbow. It’s classically associated with overhead throwing athletes (especially baseball players) and gymnasts, where repeated loading and compression at the radiocapitellar joint can contribute to injury over time.

Symptoms often start gradually rather than from one single injury. Patients commonly notice pain along the outside of the elbow that worsens with throwing, weightbearing through the arm, or repetitive activity. Swelling can develop after use, and some patients develop loss of motion, especially difficulty fully straightening the elbow. As the lesion becomes more unstable, patients may feel catching, clicking, locking, or a sense that something is “moving” inside the joint—sometimes due to a loose fragment.

Diagnosis starts with a focused history and physical exam, including assessment of elbow range of motion and tenderness along the outer elbow. X-rays can identify many lesions, but early OCD can be subtle. MRI is commonly used to evaluate the size of the lesion and, importantly, whether it appears stable or unstable. In some cases, a CT scan helps define the bony anatomy and can be useful for surgical planning. The concept of stability matters because stable lesions are more likely to respond to rest and activity modification, especially if the patient is not skeletally mature (still growing), while unstable lesions are more likely to require surgery.

In many younger patients—especially when the lesion is caught early and appears stable—nonsurgical care can be successful. This usually means stopping the aggravating activity (for example, throwing or upper-extremity weightbearing), sometimes using a short period of rest or bracing, and then progressing into a structured rehabilitation plan to restore motion and strength while protecting the healing area. Healing can take several months, and return to sport is usually guided by symptoms, exam, and follow-up imaging.

Surgery is considered when the lesion is unstable, when there are mechanical symptoms (locking/catching), when a fragment is loose, or when symptoms persist despite appropriate nonsurgical treatment. Procedures are chosen based on lesion size, location, and stability.

For smaller or unstable surface lesions, arthroscopic techniques may include debridement (cleaning up unstable cartilage) and sometimes microfracture to stimulate a healing response from the underlying bone. These approaches have shown generally favorable outcomes in many athletic populations.

If the fragment is still healthy and can be salvaged, fixation (stabilizing the piece back in place) may be an option in selected cases. For larger defects—especially in high-demand athletes—surgeons may consider transplanting healthy bone and cartilage into the defect left gehind once the fragment is removed. This could include osteochondral autograft transfer (OAT), which transfers a small plug of cartilage and bone from somewhere else in the patient’s own body to restore the joint surface, or osteochondral allograft (OCA), which transfers a piece of cartilage and bone from a cadaver; systematic reviews report good functional outcomes and return-to-play in appropriately selected patients.