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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Orthopedics

Orientation: Understanding Osteochondritis Dissecans (OCD)

At a Glance

Osteochondritis Dissecans (OCD) is a joint condition where the bone beneath the cartilage weakens, often due to repetitive stress. It primarily affects active youth (Juvenile OCD). With early diagnosis and strict rest, young patients with open growth plates can often heal without surgery.

Finding out you or your child has Osteochondritis Dissecans (OCD) can be overwhelming, but understanding the biology of the condition is the first step toward a successful recovery. OCD is a structural issue within a joint, most commonly the knee, followed by the elbow and ankle [1][2]. It is not a form of cancer, and it is not caused by an infection. Instead, it is a localized problem where a small segment of bone just beneath the joint surface begins to change [3].

How the Joint is Affected

To understand OCD, it helps to look at the two main layers of a healthy joint:

  • Articular Cartilage: This is the smooth, slippery “Teflon” coating that allows your bones to glide against each other without pain.
  • Subchondral Bone: This is the layer of bone directly underneath the cartilage that acts as its foundation or support system [3].

In OCD, the problem starts in the subchondral bone. For reasons researchers are still studying—likely a combination of repetitive “microtrauma” from sports and a temporary disruption in blood flow—a small piece of this bone begins to weaken [4][5]. Because the bone is the foundation for the cartilage above it, if the bone weakens or cracks, the overlying cartilage loses its support [6]. This can lead to the cartilage cracking or, in advanced stages, a fragment of bone and cartilage loosening and moving within the joint [7].

Facts for Orientation

While the diagnosis is serious and requires careful management, there are several stabilizing facts for patients and families:

  • High Healing Potential: In children and young adolescents with “open” growth plates (skeletally immature), the body has a remarkable ability to heal these lesions on its own with proper rest [7][8]. This is known as Juvenile OCD (JOCD).
  • Common Patterns: OCD affects approximately 6 to 9 per 100,000 people and is more common in active young males [9][10].
  • Bilateral Occurrence: In about 15% of cases, OCD occurs in the same joint on both sides of the body (e.g., both knees) [11]. If there is pain in one joint, doctors may check the other side as well.
  • Non-Surgical Success: For “stable” lesions in growing children—those that haven’t loosened or detached—conservative treatment is often highly effective, provided that strict rest and immobilization protocols are followed [7][12].

Why Did This Happen?

The exact cause of OCD is still debated, but modern medicine views it as multifactorial, meaning several things likely play a role:

  1. Repetitive Stress: High-intensity sports or repetitive motions (like pitching in baseball or jumping in gymnastics) can place “micro-stresses” on the bone that add up over time [4][13].
  2. Blood Supply: Small, temporary disruptions in the blood vessels nourishing the bone may prevent the bone from repairing itself after minor stress [5][14].
  3. Genetics: While rare, some families have a genetic predisposition to developing OCD in multiple joints [15].

Juvenile vs. Adult OCD

A key factor in the prognosis is skeletal age. Juvenile OCD (JOCD) occurs while the growth plates are still active. These patients have a much higher biological “healing power” than adults [16]. In Adult OCD (AOCD), the growth plates have closed, and the bone is less likely to heal on its own, making surgical intervention more common and often the immediate next step [7].

Managing OCD is a marathon, not a sprint. Healing is a gradual process that can take many months of monitoring with X-rays or MRIs to ensure the bone is integrating correctly [17]. By identifying the issue early and following activity restrictions, most patients can return to the activities they love.

Common questions in this guide

What is Osteochondritis Dissecans (OCD)?
OCD is a joint condition where a small segment of bone just beneath the smooth cartilage layer weakens. This loss of support can cause the overlying cartilage to crack or, in severe cases, allow a bone and cartilage fragment to break loose inside the joint.
What is the difference between Juvenile OCD and Adult OCD?
Juvenile OCD occurs in children and teens whose growth plates are still open, giving them a high natural ability to heal. Adult OCD happens after growth plates have closed, making natural healing less likely and surgery more common.
What causes OCD in joints?
While the exact cause is still debated, it is primarily linked to repetitive stress or 'microtrauma' from high-impact sports. Temporary disruptions in blood supply to the bone and genetic predisposition are also believed to play a role.
Can Osteochondritis Dissecans heal on its own?
Yes, especially in growing children and young adolescents with stable lesions. If the bone fragment hasn't detached and the patient's growth plates are open, strict rest and following activity restrictions can allow the bone to heal naturally over several months.
What are the symptoms of an unstable OCD lesion?
An unstable lesion or loose bone fragment may cause mechanical symptoms like the joint catching, locking, or clicking. You might also experience sudden sharp pain or feel like the joint is going to give way during physical activities.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Are the growth plates 'open' or 'closed', and how does that affect the treatment plan?
  2. 2.Is the lesion currently considered 'stable' or 'unstable' on the MRI?
  3. 3.Do you see a 'high signal line' or fluid behind the bone fragment in the imaging?
  4. 4.What are the specific activity restrictions required right now?
  5. 5.How often will we need follow-up X-rays or MRIs to monitor healing?
  6. 6.Are there any signs of limb malalignment that might be putting extra stress on this joint?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (17)
  1. 1

    Management of Osteochondritis Dissecans Lesions of the Knee, Elbow and Ankle.

    Bauer KL, Polousky JD

    Clinics in sports medicine 2017; (36(3)):469-487 doi:10.1016/j.csm.2017.02.005.

    PMID: 28577707
  2. 2

    What's New in Osteochondritis Dissecans of the Knee, Elbow, and Ankle.

    Meadows MC, Wilson PL, Wall EJ, et al.

    Instructional course lectures 2021; (70()):433-452.

    PMID: 33438926
  3. 3

    Surgical treatment for osteochondritis dessicans of the knee.

    Winthrop Z, Pinkowsky G, Hennrikus W

    Current reviews in musculoskeletal medicine 2015; (8(4)):467-75 doi:10.1007/s12178-015-9304-9.

    PMID: 26409885
  4. 4

    Osteochondritis Dissecans of the Knee Associated With Mechanical Overload.

    van der Weiden GS, van Cruchten S, van Egmond N, et al.

    The American journal of sports medicine 2024; (52(1)):155-163 doi:10.1177/03635465231211497.

    PMID: 38164681
  5. 5

    Novel Application of Magnetic Resonance Imaging Demonstrates Characteristic Differences in Vasculature at Predilection Sites of Osteochondritis Dissecans.

    Tóth F, Nissi MJ, Ellermann JM, et al.

    The American journal of sports medicine 2015; (43(10)):2522-7 doi:10.1177/0363546515596410.

    PMID: 26286878
  6. 6

    Osteochondritis dissecans of the knee.

    Accadbled F, Vial J, Sales de Gauzy J

    Orthopaedics & traumatology, surgery & research : OTSR 2018; (104(1S)):S97-S105 doi:10.1016/j.otsr.2017.02.016.

    PMID: 29197636
  7. 7

    Osteochondritis Dissecans in the Skeletally Immature Knee.

    Shea KG, Richmond CG, Ganley TJ

    Instructional course lectures 2018; (67()):403-412.

    PMID: 31411428
  8. 8

    Osteochondritis Dissecans: Current Understanding of Epidemiology, Etiology, Management, and Outcomes.

    Chau MM, Klimstra MA, Wise KL, et al.

    The Journal of bone and joint surgery. American volume 2021; (103(12)):1132-1151 doi:10.2106/JBJS.20.01399.

    PMID: 34109940
  9. 9

    Detection of Factors Related to the Development of Osteochondritis Dissecans in Youth Baseball Players Screening.

    Teruya S, Ogawa T, Yamada H, et al.

    Diagnostics (Basel, Switzerland) 2023; (13(23)) doi:10.3390/diagnostics13233589.

    PMID: 38066830
  10. 10

    Osteochondritis dissecans of the patella: a case-report in a juvenile football player.

    Cruz P, Bettencourt F, Arneiro G

    Science & medicine in football 2021; (5(3)):250-253 doi:10.1080/24733938.2020.1846770.

    PMID: 35077288
  11. 11

    Bilateral osteochondritis dissecans of the knee in pediatric and adolescent patients presenting with unilateral symptoms: An epidemiological and radiographic analysis.

    Yellin JL, Tysklind RG, Hussain ZB, et al.

    Journal of children's orthopaedics 2023; (17(5)):481-488 doi:10.1177/18632521231193711.

    PMID: 37799315
  12. 12

    Nonoperative treatment of stable juvenile osteochondritis dissecans of the knee: effectiveness of unloader bracing.

    Tepolt FA, Kalish LA, Heyworth BE, Kocher MS

    Journal of pediatric orthopedics. Part B 2020; (29(1)):81-89 doi:10.1097/BPB.0000000000000617.

    PMID: 31774736
  13. 13

    Overuse injuries in sport: a comprehensive overview.

    Aicale R, Tarantino D, Maffulli N

    Journal of orthopaedic surgery and research 2018; (13(1)):309 doi:10.1186/s13018-018-1017-5.

    PMID: 30518382
  14. 14

    Vascularity of the early post-natal human distal femoral chondroepiphysis: Quantitative MRI analysis.

    Lin KM, Gadinsky NE, Klinger CE, et al.

    Journal of children's orthopaedics 2022; (16(2)):152-158 doi:10.1177/18632521221084179.

    PMID: 35620125
  15. 15

    Variable expressivity in a family with an aggrecanopathy.

    Denis A, Chergui S, Basalom S, et al.

    Molecular genetics & genomic medicine 2022; (10(1)):e1773 doi:10.1002/mgg3.1773.

    PMID: 34894100
  16. 16

    Evaluation of Osteochondritis Dissecans Treatment with Bioabsorbable Implants in Children and Adolescents.

    Wiktor Ł, Tomaszewski R

    Journal of clinical medicine 2022; (11(18)) doi:10.3390/jcm11185395.

    PMID: 36143038
  17. 17

    Trauma-induced spontaneous union of a talar osteochondritis dissecans: case report.

    Aalders MB, Dahmen J, Kerkhoffs GMMJ

    Journal of ISAKOS : joint disorders & orthopaedic sports medicine 2023; (8(4)):261-266 doi:10.1016/j.jisako.2023.05.002.

    PMID: 37236361

This page provides an educational overview of Osteochondritis Dissecans (OCD). It is not a substitute for professional medical advice. Always consult an orthopedic specialist or pediatrician for proper diagnosis and treatment of joint issues.

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