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Cervical spine dislocations with unilateral facet interlocking.

A Key

    Paraplegia
    |November 1, 1975
    PubMed
    Summary

    Unilateral facet interlocking dislocations are a common cervical spine injury after spinal cord trauma. Many cases present with incomplete neurological deficits and show good prognosis with traction reduction.

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    Area of Science:

    • Orthopedics
    • Neurosurgery
    • Radiology

    Background:

    • Cervical spine trauma frequently involves facet joint injuries.
    • Unilateral facet interlocking dislocations are a specific type of injury that can be challenging to diagnose.
    • These injuries are associated with spinal cord trauma and neurological deficits.

    Purpose of the Study:

    • To determine the incidence of unilateral facet interlocking dislocations in cervical spinal cord trauma.
    • To describe the characteristic radiographic findings of these dislocations.
    • To evaluate the neurological prognosis and treatment outcomes for this specific injury pattern.

    Main Methods:

    • Retrospective review of 525 cases of cervical lesions associated with spinal cord trauma.
    • Analysis of radiographic findings to identify unilateral facet interlocking dislocations.
    • Assessment of initial neurological status and response to treatment, including traction and manipulation.

    Main Results:

    • 17.5% (92/525) of cervical lesions were unilateral facet interlocking dislocations.
    • These dislocations often present with incomplete neurological deficits.
    • 51% of all cases reduced with traction alone; in 1973, 66% (10/15) reduced with skull traction.
    • Good neurological prognosis is linked to the degree of initial neurological recovery.

    Conclusions:

    • Unilateral facet interlocking dislocations are a significant subset of cervical spinal cord injuries.
    • Characteristic radiographic appearances aid diagnosis, even when initially missed.
    • Traction is an effective primary treatment modality for many of these injuries, leading to favorable neurological outcomes.

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