Influence of Skeletal Muscle Mass and Spinal Alignment on Surgical Outcomes for Lumbar Spinal Stenosis

Retrospective observational study. We considered the relationship between spinal alignment and skeletal muscle mass on clinical outcomes following a surgery for lumbar spinal stenosis (LSS). There are no reports of preoperative factors predicting residual low back pain following surgery for LSS. Our...

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Bibliographic Details
Published in:Asian spine journal 2018, 12(3), , pp.556-562
Main Authors: Eguchi, Yawara, Suzuki, Munetaka, Yamanaka, Hajime, Tamai, Hiroshi, Kobayashi, Tatsuya, Orita, Sumihisa, Yamauchi, Kazuyo, Suzuki, Miyako, Inage, Kazuhide, Fujimoto, Kazuki, Kanamoto, Hirohito, Abe, Koki, Norimoto, Masaki, Umimura, Tomotaka, Aoki, Yasuchika, Koda, Masao, Furuya, Takeo, Toyone, Tomoaki, Ozawa, Tomoyuki, Takahashi, Kazuhisa, Ohtori, Seiji
Format: Article
Language:English
Subjects:
Clinical Study
Low back pain
Sarcopenia
Skeletal muscle
Spinal stenosis
Surgery
정형외과학
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Summary:Retrospective observational study. We considered the relationship between spinal alignment and skeletal muscle mass on clinical outcomes following a surgery for lumbar spinal stenosis (LSS). There are no reports of preoperative factors predicting residual low back pain following surgery for LSS. Our target population included 34 women (mean age, 74.4 years) who underwent surgery for LSS. Prior to and 6 months after the surgery, systemic bone mineral density and lean soft tissue mass were measured using dual-energy X-ray absorptiometry. Skeletal muscle mass index (SMI) was calculated as the sum of the arm and leg lean mass in kilograms divided by height in meters squared. The spinal alignment was also measured. Clinical outcomes were evaluated using the Japanese Orthopedic Association scoring system, leg and low back pain Visual Analog Scale, and Roland-Morris Disability Questionnaire (RDQ). Additionally, we examined the bone mineral density, skeletal muscle mass, and spinal alignment before and after the surgery. We used the Spearman correlation coefficient to examine the associations among clinical outcomes, preoperative muscle mass, and spinal alignment. Sarcopenia (SMI 6.12), RDQ was significantly higher in subjects with sarcopenia ( =0.04). RDQ was significantly negatively correlated with SMI ( =-0.42,
ISSN:1976-1902
1976-7846
DOI:10.4184/asj.2018.12.3.556