Abstract
Study Design: Cross sectional study. Purpose: To clarify the difference in position of the psoas muscle between adult spinal deformity (ASD) and lumbar spinal stenosis (LSS). Overview of Literature: Although it is known that the psoas major muscle deviates in ASD patients, no report is available regarding the difference in comparison with LSS patients. Methods: This study investigates 39 patients. For evaluating spinal alignment, pelvic tilt (PT), pelvic incidence (PI), sacral slope, lumbar lordosis (LL), PI-LL, Cobb angle, and the convex side, the lumbar curves were measured. For measuring the position of the psoas major at the L4/5 disk level, magnetic resonance imaging was used. The displacements of psoas major muscle were measured separately in the anterior-posterior and lateral directions. We examined the relationship between the radiographic parameters and anterior displacement (AD) and lateral displacement (LD) of the psoas major muscle. Results: AD was demonstrated in 15 cases with ASD and nine cases with LSS (p > 0.05). LD was observed in 13 cases with ASD and no cases with LSS (p < 0.01). The Cobb angle was significantly greater in cases with AD than in those without AD (p =0.04). PT, LL, PI- LL, and Cobb angle were significantly greater in cases with LD (p < 0.05). All cases with LD had AD, but no case without AD had LD (p < 0.001). The side of greater displacement at L4/5 and the convex side of the lumbar curve were consistent in all cases. Conclusions: Despite AD being observed in LSS as well, LD was observed only in the ASD group. Radiographic parameters were worse when LD was seen, rather than AD.
| Original language | English |
|---|---|
| Pages (from-to) | 335-342 |
| Number of pages | 8 |
| Journal | Asian Spine Journal |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 1 2018 |
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Keywords
- Enthesopathy
- Lumbar vertebrae
- Posture
- Psoas muscle
- Scoliosis
ASJC Scopus subject areas
- Surgery
- Orthopedics and Sports Medicine
Cite this
Relationship between displacement of the psoas major muscle and spinal alignment in patients with adult spinal deformity. / Oda, Yoshiaki; Takigawa, Tomoyuki; Ugawa, Ryo; Shiozaki, Yasuyuki; Misawa, Haruo; Sugimoto, Yoshihisa; Tanaka, Masato; Ozaki, Toshihumi.
In: Asian Spine Journal, Vol. 12, No. 2, 01.04.2018, p. 335-342.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relationship between displacement of the psoas major muscle and spinal alignment in patients with adult spinal deformity
AU - Oda, Yoshiaki
AU - Takigawa, Tomoyuki
AU - Ugawa, Ryo
AU - Shiozaki, Yasuyuki
AU - Misawa, Haruo
AU - Sugimoto, Yoshihisa
AU - Tanaka, Masato
AU - Ozaki, Toshihumi
PY - 2018/4/1
Y1 - 2018/4/1
N2 - Study Design: Cross sectional study. Purpose: To clarify the difference in position of the psoas muscle between adult spinal deformity (ASD) and lumbar spinal stenosis (LSS). Overview of Literature: Although it is known that the psoas major muscle deviates in ASD patients, no report is available regarding the difference in comparison with LSS patients. Methods: This study investigates 39 patients. For evaluating spinal alignment, pelvic tilt (PT), pelvic incidence (PI), sacral slope, lumbar lordosis (LL), PI-LL, Cobb angle, and the convex side, the lumbar curves were measured. For measuring the position of the psoas major at the L4/5 disk level, magnetic resonance imaging was used. The displacements of psoas major muscle were measured separately in the anterior-posterior and lateral directions. We examined the relationship between the radiographic parameters and anterior displacement (AD) and lateral displacement (LD) of the psoas major muscle. Results: AD was demonstrated in 15 cases with ASD and nine cases with LSS (p > 0.05). LD was observed in 13 cases with ASD and no cases with LSS (p < 0.01). The Cobb angle was significantly greater in cases with AD than in those without AD (p =0.04). PT, LL, PI- LL, and Cobb angle were significantly greater in cases with LD (p < 0.05). All cases with LD had AD, but no case without AD had LD (p < 0.001). The side of greater displacement at L4/5 and the convex side of the lumbar curve were consistent in all cases. Conclusions: Despite AD being observed in LSS as well, LD was observed only in the ASD group. Radiographic parameters were worse when LD was seen, rather than AD.
AB - Study Design: Cross sectional study. Purpose: To clarify the difference in position of the psoas muscle between adult spinal deformity (ASD) and lumbar spinal stenosis (LSS). Overview of Literature: Although it is known that the psoas major muscle deviates in ASD patients, no report is available regarding the difference in comparison with LSS patients. Methods: This study investigates 39 patients. For evaluating spinal alignment, pelvic tilt (PT), pelvic incidence (PI), sacral slope, lumbar lordosis (LL), PI-LL, Cobb angle, and the convex side, the lumbar curves were measured. For measuring the position of the psoas major at the L4/5 disk level, magnetic resonance imaging was used. The displacements of psoas major muscle were measured separately in the anterior-posterior and lateral directions. We examined the relationship between the radiographic parameters and anterior displacement (AD) and lateral displacement (LD) of the psoas major muscle. Results: AD was demonstrated in 15 cases with ASD and nine cases with LSS (p > 0.05). LD was observed in 13 cases with ASD and no cases with LSS (p < 0.01). The Cobb angle was significantly greater in cases with AD than in those without AD (p =0.04). PT, LL, PI- LL, and Cobb angle were significantly greater in cases with LD (p < 0.05). All cases with LD had AD, but no case without AD had LD (p < 0.001). The side of greater displacement at L4/5 and the convex side of the lumbar curve were consistent in all cases. Conclusions: Despite AD being observed in LSS as well, LD was observed only in the ASD group. Radiographic parameters were worse when LD was seen, rather than AD.
KW - Enthesopathy
KW - Lumbar vertebrae
KW - Posture
KW - Psoas muscle
KW - Scoliosis
UR - http://www.scopus.com/inward/record.url?scp=85045670278&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85045670278&partnerID=8YFLogxK
U2 - 10.4184/asj.2018.12.2.335
DO - 10.4184/asj.2018.12.2.335
M3 - Article
AN - SCOPUS:85045670278
VL - 12
SP - 335
EP - 342
JO - Asian Spine Journal
JF - Asian Spine Journal
SN - 1976-1902
IS - 2
ER -