Postoperative impairment of cervical nerve for cervical myelopathy.

Sunago, Kouzou; Kawai, Shinya; Saika, Minoru; Nomura, Kohzoh; Nakata, Kazuo; Nakahara, Tsutomu; Kifune, Masao

doi:10.5035/nishiseisai.37.571

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2010

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“…26 CT was used to measure the width of the intervertebral foramen at C5 (Fig. 1d), the anterior protrusion of the superior articular process, 27 of C5 (Fig. 1e), the presence of hinge dislodgement, and the position of the bony gutter (Fig.…”

Section: Methodsmentioning

confidence: 99%

C5 palsy after cervical laminoplasty

Imagama

Matsuyama

Yukawa

et al. 2010

The Journal of Bone and Joint Surgery. British volume

242

168

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We have reviewed 1858 patients who had undergone a cervical laminoplasty and identified 43 (2.3%) who had developed a C5 palsy with a MMT (MRC) grade of 0 to 2 in the deltoid, with or without involvement of the biceps, but with no loss of muscular strength in any other muscles. The clinical features and radiological findings of patients with (group P; 43 patients) and without (group C; 100 patients) C5 palsy were compared. CT scanning of group P revealed a significant narrowing of the intervertebral foramen of C5 (p < 0.005) and a larger superior articular process (p < 0.05). On MRI, the posterior shift of the spinal cord at C4-5 was significantly greater in group P, than in group C (p < 0.01). This study is the first to correlate impairment of the C5 nerve root with a C5 palsy. It may be that early foraminotomy in susceptible individuals and the avoidance of tethering of the cord by excessive laminoplasty may prevent a post-operative palsy of the C5 nerve root.

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Section: Methodsmentioning

confidence: 99%