In plain language
A localized subchondral bone lesion can destabilize or detach overlying cartilage and bone.
Clinical Significance & Management
Skeletal maturity, stability, size and symptoms guide treatment, commonly at the knee.
Symptoms & Clinical Presentation
Activity pain, swelling or stiffness; unstable fragments may cause locking.
Etiology & Injury Mechanisms
- The cause is incompletely understood; blood supply, repeated load and genetics may contribute.
Diagnostics & Imaging Guide
X-rays locate lesions; MRI helps assess cartilage, stability and healing.
Treatment Options
Stable juvenile lesions may need impact restriction and monitoring; unstable or persistent lesions may need fixation or repair.
Rehabilitation Milestones & Timeline
Rehabilitation depends on the diagnosis, procedure and associated injuries. Progression requires assessment of healing, symptoms and function; elapsed time or a single test cannot determine readiness for sport.
Rehabilitation progression
Protect the lesion, maintain permitted strength work and resume impact according to healing assessments.
Evidence-Based Clarifications
The name does not imply bacterial infection or automatic surgery.
Sources & References
Educational clinical definitions synthesized from AAOS, Cleveland Clinic, Mayo Clinic, and HSS. Individual diagnosis and surgery require professional medical evaluation.
Publication date
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