The Impact of Sarcopenia on Cervical Spine Sagittal Alignment After Cervical Laminoplasty

Study Design: This was a prospective follow-up study. Objective: The main objective of this study was to evaluate the effects of sarcopenia on the sagittal alignment of the cervical spine after cervical laminoplasty in order to investigate the relationship between sarcopenia and spinal malalignment. Summary of Background Data: Sarcopenia, a progressive and all over loss of skeletal muscle mass and strength associated with aging, has been reported to be related to spinal malalignment. The causes of poor surgical outcome after cervical laminoplasty have been examined in recent years, including the sagittal malalignment of the cervical spine. However, there are few reports about the impact of sarcopenia on the sagittal alignment of the cervical spine. Materials and Methods: A total of 171 patients who underwent cervical laminoplasty at our hospital between 2009 and 2015 were assigned to this study. The appendicular skeletal muscle mass [appendicular skeletal muscle index (SMI)] is commonly used to assess sarcopenia. Appendicular SMI (kg/m2) was obtained from arm and leg muscle mass using dual-energy x-ray absorptiometry. Sanada and colleagues reference value for the Japanese appendicular SMI was used to diagnose sarcopenia. C2–C7 sagittal vertical axis (SVA), C2–C7 lordosis angle, and C2–C7 range of motion were measured for evaluation. The primary outcome was evaluated using the Japanese Orthopedic Association Score System for Cervical Myelopathy (JOA score) and...
Source: Journal of Spinal Disorders and Techniques - Category: Surgery Tags: Primary Research Source Type: research