• Int Orthop · Feb 2012

    Late onset Pott's paraplegia in patients with upper thoracic sharp kyphosis.

    • Zhengfeng Zhang.
    • Department of Orthopaedics, Xinqiao Hospital, Third Military Medical University, Shapingba District, Chongqing, China. zhangz68@yahoo.cn
    • Int Orthop. 2012 Feb 1;36(2):381-5.

    PurposeThe purpose of this study was to determine the clinical results of patients with late onset upper thoracic sharp Pott's kyphosis and to predict the prognosis for Pott's paraplegics.MethodThe study included five patients who developed late onset upper thoracic (T1-T4) sharp Pott's kyphosis/kyphoscoliosis within a period from 19 to 37 years after the active disease was healed. The kyphosis angle of the patients ranged from 95° to 105°. Among them, three patients suffered onset of paraplegia ranging from 26 to 31 years after spinal tuberculosis was healed. The duration of neurological deterioration before surgery ranged from four to five years. All patients underwent decompressive surgery with an attempt to correct the curve. Neurological status was evaluated using the ASIA impairment classification and the motor score.ResultsPostoperatively, kyphosis correction ranged from 20° to 30° for five patients. No neurological deficit occurred in two patients with normal neurological status. Two ASIA D paraplegics remained unchanged after surgery and no further improvement was found at one year follow-up. One ASIA C paralysis deteriorated neurologically to ASIA B after surgery and persisted to a deterioration of neurological status at one year follow-up.ConclusionUpper thoracic sharp Pott's kyphosis and neurological deficits occur progressively. The neurological recovery or improvement of Pott's paraplegics with upper thoracic severe sharp kyphosis results in poor prognosis after decompressive surgery.

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