A Comparison Study on the Change in Lumbar Lordosis When Standing, Sitting on a Chair, and Sitting on the Floor in Normal Individuals

Bae, Jun Seok; Jang, Jee-Soo; Lee, Sang-Ho; Kim, Jin Uk

doi:10.3340/jkns.2012.51.1.20

Cited by 32 publications

(20 citation statements)

References 16 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…was similar in this cohort to previously published figures [27,28]. Our results show a trend for the seated extension posture to have a less lordotic curvature than in upright stranding (albeit not significantly) which is similar to previous studies that have reported the lumbar lordosis to be greater in standing than sitting [29][30][31][32]. Small differences in M1 scores at larger angles of flexion indicate that some individuals may have already reached their comfortable end range of motion for the spine in the flex 60°posture [33] and, therefore, find it difficult to flex any further for the hang-flex posture.…”

Section: Discussionsupporting

confidence: 92%

The lumbar spine has an intrinsic shape specific to each individual that remains a characteristic throughout flexion and extension

et al. 2014

View full text Add to dashboard Cite

Purpose We have previously shown that the lumbar spine has an intrinsic shape specific to the individual and characteristic of sitting, standing and supine postures. The purpose of this study was to test the hypothesis that this intrinsic shape is detectable throughout a range of postures from extension to full flexion in healthy adults. Methods Sagittal images of the lumbar spine were taken using a positional MRI with participants (n = 30) adopting six postures: seated extension, neutral standing, standing with 30, 45 and 60°and full flexion. Active shape modelling (ASM) was used to identify and quantify 'modes' of variation in the shape of the lumbar spine. Results ASM showed that 89.5 % of the variation in the shape of the spine could be explained by the first two modes; describing the overall curvature and the distribution of curvature of the spine. Mode scores were significantly correlated between all six postures (modes 1-9, r = 0.4-0.97, P \ 0.05), showing that an element of intrinsic shape was maintained when changing postures. The spine was most even in seated extension (P \ 0.001) and most uneven between 35 and 45°flexion (P \ 0.05). Conclusions This study shows that an individual's intrinsic lumbar spine shape is quantifiable and detectable throughout lumbar flexion and extension. These findings will enable the role of lumbar curvature in injury and low back pain to be assessed in the clinic and in the working and recreational environments.

show abstract

Section: Discussionsupporting

confidence: 92%

The lumbar spine has an intrinsic shape specific to each individual that remains a characteristic throughout flexion and extension

et al. 2014

View full text Add to dashboard Cite

show abstract

“…To this end, the dis tances and the angles between the intervertebral joints of lumbar spine segments T12-S1 were measured. The results showed that Cobb's angle of the lumbar spine region was within a normal range in all subjects [18].…”

Section: Customized Lumbar Spine Modelmentioning

confidence: 97%

Biomechanical Effect of Altered Lumbar Lordosis on Intervertebral Lumbar Joints During the Golf Swing: A Simulation Study

Bae

Cho

Kim

et al. 2014

Journal of Biomechanical Engineering

View full text Add to dashboard Cite

Although the lumbar spine region is the most common site of injury in golfers, little research has been done on intervertebral loads in relation to the anatomical-morphological differences in the region. This study aimed to examine the biomechanical effects of anatomical-morphological differences in the lumbar lordosis on the lumbar spinal joints during a golf swing. The golf swing motions of ten professional golfers were analyzed. Using a subject-specific 3D musculoskeletal system model, inverse dynamic analyses were performed to compare the intervertebral load, the load on the lumbar spine, and the load in each swing phase. In the intervertebral load, the value was the highest at the L5-S1 and gradually decreased toward the T12. In each lumbar spine model, the load value was the greatest on the kypholordosis (KPL) followed by normal lordosis (NRL), hypolordosis (HPL), and excessive lordosis (EXL) before the impact phase. However, results after the follow-through (FT) phase were shown in reverse order. Finally, the load in each swing phase was greatest during the FT phase in all the lumbar spine models. The findings can be utilized in the training and rehabilitation of golfers to help reduce the risk of injury by considering individual anatomical-morphological characteristics.

show abstract

“…Another finding is that the disability scores for sitting on the floor were not different among groups who had the fusion at L4-L5 or at L5-S1. Bae et al 28 described in a radiological study of a healthy population on the change of segmental and whole lumbar lordosis according to the postures of standing, sitting in a chair, and sitting on the floor in ''oriental style'' that 66.2% of the loss of the whole lumbar lordosis during the postural change from sitting in a chair to sitting on the floor occurs at L4-L5, whereas only 6.9% at L5-S1. It was expected that back pain while sitting on the floor after lumbar fusion would be most serious when the fusion is done at the L4-L5 level.…”

Section: Discussionmentioning

confidence: 99%

Lumbar Spinal Fusion Affects Sitting Disability on the Floor

Shim

Lee

2019

Int J Spine Surg

Self Cite

View full text Add to dashboard Cite

Background: Lumbar spinal fusion is a standard of care for certain lumbar spinal diseases. However, its impact on sitting, especially on the floor, has not been assessed, even in the countries where people usually sit on the floor instead of using a chair. Methods: A total of 100 Korean patients who underwent lumbar spinal fusion and 47 patients who underwent decompression surgery were enrolled. In a postoperative Oswestry Disability Index (ODI) questionnaire, an additional section 11 (Sitting on the Floor) was inserted, in which the phrase ''sitting in a chair'' of section 5 was replaced with ''sitting on the floor.'' The ODI scores were calculated twice using either the section with ''sitting in a chair'' or the section with ''sitting on the floor'' and comparing the two. Results: In the fusion group, the mean postoperative ODI calculated with ''sitting on the floor'' is significantly worse than that with ''sitting in a chair'' (P , .0001). This difference was the same regardless of whether the fusion was done at a single level (P , .0001) or 2 or more levels (P ¼ .006) or whether location was at L4-L5 (P ¼ .002) or L5-S1 (P ¼ .02) in a single-level fusion. The scores of the decompression group showed no difference. Though preoperative and postoperative ODI showed no difference between groups, the postoperative ODI using ''sitting on the floor'' was significantly worse in the fusion group than the decompression group (P ¼ .009). Conclusion: ODI scores using ''sitting on the floor'' after lumbar fusion were significantly worse than those with ''sitting in a chair.'' A sitting disability on the floor after lumbar arthrodesis has not been appreciated adequately so far and should be seriously considered if a lumbar arthrodesis is planned in a society where people's usual style of sitting is on the floor.

show abstract

A Comparison Study on the Change in Lumbar Lordosis When Standing, Sitting on a Chair, and Sitting on the Floor in Normal Individuals

Cited by 32 publications

References 16 publications

The lumbar spine has an intrinsic shape specific to each individual that remains a characteristic throughout flexion and extension

The lumbar spine has an intrinsic shape specific to each individual that remains a characteristic throughout flexion and extension

Biomechanical Effect of Altered Lumbar Lordosis on Intervertebral Lumbar Joints During the Golf Swing: A Simulation Study

Lumbar Spinal Fusion Affects Sitting Disability on the Floor

Contact Info

Product

Resources

About