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'Locking knee' due to osteochondroma.

J Kernohan, J S Blackburne

    Injury
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    An osteochondroma on the upper tibia can cause knee locking in teenagers, hindering full extension. Surgical removal of the bone tumor typically resolves this painful condition.

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    Area of Science:

    • Orthopedics
    • Pediatric Orthopedics
    • Musculoskeletal Oncology

    Background:

    • Knee locking is a common complaint in adolescents, often attributed to meniscal tears or loose bodies.
    • Osteochondromas are benign bone tumors that can arise from any bone, most commonly occurring in long bones near growth plates.

    Observation:

    • A case series presenting an unusual etiology of knee locking in young teenagers.
    • The locking mechanism was identified as an osteochondroma located on the medial aspect of the proximal tibia.
    • Symptoms included difficulty in fully extending the knee from a flexed position, impacting daily activities.

    Findings:

    • The osteochondroma interfered with the normal gliding motion of the pes anserinus tendons.
    • Histopathological examination confirmed the diagnosis of osteochondroma.

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  • Surgical excision of the osteochondroma was performed in symptomatic patients.

    • Implications:

    • This case highlights osteochondroma as a potential, albeit rare, cause of knee locking in adolescents.
    • Prompt diagnosis and surgical intervention can lead to complete resolution of symptoms.
    • Awareness of this differential diagnosis is crucial for orthopedic surgeons managing pediatric knee complaints.