• World Neurosurg · Aug 2023

    Characteristics of postoperative C5 palsy following anterior decompression and fusion surgery for cervical degenerative disorders: trends associated with advancements in surgical technique.

    • Atsuomi Aiba, Macondo Mochizuki, Ryo Kadota, Mitsuhiro Hashimoto, Satoshi Maki, Takeo Furuya, Masao Koda, Masashi Yamazaki, and Hiroshi Takahashi.
    • Department of Orthopaedic Surgery, Numazu City Hospital, Numazu City, Shizuoka, Japan.
    • World Neurosurg. 2023 Aug 1; 176: e232e239e232-e239.

    ObjectiveTo investigate trends in the characteristics of postoperative C5 palsy following anterior decompression and fusion associated with advancements in this surgical procedure to treat cervical degenerative disorders.MethodsWe included 801 consecutive patients who underwent anterior decompression and fusion for cervical degenerative disorders from 2006 to 2019 and investigated the incidence, onset, and prognosis of C5 palsy. In addition, we compared the incidence of C5 palsy with that found in our previous investigation.ResultsThe cases of 42 (5.2%) patients were complicated by C5 palsy. For patients with ossification of the longitudinal ligament (OPLL), 22 (12.4%) of 177 were complicated with C5 palsy, and the incidence was significantly higher than that in patients without OPLL (20 [3.2%] of 624, P < 0.01). The incidence of C5 palsy in patients without OPLL was significantly lower than that found in our previous investigation (P < 0.01). The incidence of C5 palsy in patients that required contiguous multilevel corpectomy was significantly higher in patients that required within a single corpectomy (P < 0.01). At 1-year follow-up, muscle strength in 3 (6.1%) of 49 limbs had not improved sufficiently.ConclusionsWith advancements in surgical techniques which allowed necessary and sufficient spinal cord decompression and avoided unnecessary corpectomy, the incidence of C5 palsy in patients without OPLL was decreased significantly. By contrast, for patients with OPLL, the incidence of C5 palsy was similar to the incidence found previously, perhaps because a broad and contiguous multilevel corpectomy was usually needed to decompress the spinal cord sufficiently.Copyright © 2023 Elsevier Inc. All rights reserved.

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