Change of the Posterior Paraspinal Muscles after Expansive Laminoplasty in Cervical Myelopathy

Abstract

A total of 47 patients with cervical myelopathy underwent double door laminoplasty. We examined the radiological changes and their local symptoms for any potential correlationship. The 47 patients involved 31 males and 16 females, with an average age of 61 years. Cervical back muscle area was measured by computed tomography. Local symptoms remained in 7 patients after the operation. These local symptoms did not correlate with ligament deviation nor the CT measurements of back muscle area.