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Lunotriquetral sprains.

D S Reagan, R L Linscheid, J H Dobyns

    The Journal of Hand Surgery
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Lunotriquetral (LT) sprains, injuries on the ulnar side of the wrist, are often missed. Early diagnosis and immobilization can aid recovery, while chronic cases may need surgical intervention.

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    Area of Science:

    • Orthopedic Surgery
    • Sports Medicine
    • Hand and Wrist Anatomy

    Background:

    • Ulnar-sided wrist injuries, particularly lunotriquetral (LT) sprains, are frequently underdiagnosed.
    • These injuries often result from hyperextension and twisting mechanisms.

    Observation:

    • Symptoms include wrist pain, weakness, limited motion, and a distinct
    • click
    • during lateral movements.
    • Physical examination may reveal tenderness, laxity, and a palpable snap over the LT joint.
    • Radiocarpal arthrograms can aid in confirming the diagnosis of LT sprains.

    Findings:

    • LT sprains can be associated with dorsal subluxation of the ulnar head and carpal supination.
    • Palmar-flexion instability patterns may indicate a more severe injury, termed LT dissociation.

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  • Associated injuries like carpometacarpal (CMC) fractures or hamulus fractures can occur concurrently.

    • Implications:

    • Early diagnosis and adequate immobilization are crucial for managing acute LT sprains.
    • Chronic or severe cases may necessitate surgical stabilization, including ligament repair, reconstruction, or LT fusion.
    • Treatment outcomes for LT sprains are variable and depend on injury severity and chronicity at presentation.