Kinematics of the Lumbar Spine During Classic Ballet Postures

2004 ◽  
Vol 19 (4) ◽  
pp. 174-180
Author(s):  
Veronique Feipel ◽  
Sandra Dalenne ◽  
Pierre-Michel Dugailly ◽  
Patrick Salvia ◽  
Marcel Rooze

Postural characteristics and three-dimensional (3D) kinematics of the lumbar spine were examined during classic ballet gestures in 25 expert dancers (17 females, 8 males; mean age, 21 ± 4 yrs). The 3D displacements of the thorax to the pelvis were sampled with a 3D-electrogoniometer during right and left arabesque, developpe a la seconde, and pied-en-main, and a photographic technique was used to calculate lower-limb elevation, shoulder inclination, and tragus or C7 displacement. The incidence of low-back (43%) and hip pain (40%) was large. Arabesque was characterized by lumbar extension (20-25°), ipsilateral bending (˜20°), and contralateral rotation (˜10°), and a 90° angle between the thighs. During pied-enmain and developpe a la seconde, lumbar flexion (˜30°), ipsilateral bending (10–15°), and contralateral rotation (˜20°) occurred. The angle between the thighs was 150° and 120°, respectively. There was poor correlation between medical history, anthropometrical characteristics, and postural and kinematics variables, except for shoulder inclination, which differed significantly between dancers with hip or low-back problems and those without complaints. We conclude that no relationship exists between hip flexibility and the lumbar spine contribution to various ballet tasks, suggesting that lower-limb elevation during arabesque and developpe a la seconde depends more on hip flexibility than on a lumbar contribution.

Spine ◽  
2001 ◽  
Vol 26 (17) ◽  
pp. 1910-1919 ◽  
Author(s):  
Lutz Vogt ◽  
Klaus Pfeifer ◽  
Martin Portscher ◽  
Winfried Banzer

2008 ◽  
Vol 8 (5) ◽  
pp. 124S-125S
Author(s):  
Yoshihisa Otsuka ◽  
Alejandro Espinoza Orias ◽  
Howard An ◽  
Gunnar Andersson ◽  
Nozomu Inoue

Medicina ◽  
2021 ◽  
Vol 57 (2) ◽  
pp. 87
Author(s):  
Hirohiko Inanami ◽  
Hiroki Iwai ◽  
So Kato ◽  
Yuichi Takano ◽  
Yohei Yuzawa ◽  
...  

Background and objectives: Global sagittal imbalance with lumbar hypo-lordosis can cause low back pain (LBP) during standing and/or walking. This condition has recently been well-known as one of the major causes of reduced health-related quality of life (HRQOL) in elderly populations. Decrease in disc space of anterior elements and an increase in the spinous process height of posterior elements may both contribute to the decrease in lordosis of the lumbar spine. To correct the sagittal imbalance, the mainstream option is still a highly invasive surgery, such as long-segment fusion with posterior wedge osteotomy. Therefore, we developed a treatment that is partial resection of several spinous processes of thoraco-lumbar spine (PRSP) and lumbar extension exercise to improve the flexibility of the spine as postoperative rehabilitation. Materials and Methods: Consecutively, seven patients with over 60 mm of sagittal vertical axis (SVA) underwent PRSP. The operation was performed with several small midline skin incisions under general anesthesia. After splitting the supraspinous ligaments, the cranial or caudal tip of the spinous process of several thoraco-lumbar spines was removed, and postoperative rehabilitation was followed to improve extension flexibility. Results: The average follow-up period was 13.0 months. The average blood loss and operation time were 11.4 mL and 47.4 min, respectively. The mean SVA improved from 119 to 93 mm but deteriorated in one case. The mean numerical rating scale of low back pain improved from 6.6 to 3.7 without any exacerbations. The mean Oswestry Disability Index score was improved from 32.4% to 19.1% in six cases, with one worsened case. Conclusions: We performed PRSP and lumbar extension exercise for the patients with LBP due to lumbar kyphosis. This minimally invasive treatment was considered to be effective in improving the symptoms of low back pain and HRQOL, especially of elderly patients with lumbar kyphosis.


Author(s):  
Yoon Hyuk Kim ◽  
Won Man Park ◽  
Kyungsoo Kim

Traction therapy is a widely used conservative treatment for low back pain. However, the effects of traction therapy on lumbar spine biomechanics are not well known. We investigated biomechanical effects of two-step traction therapy, which consists of global axial traction and local decompression, on the lumbar spine using a validated three-dimensional finite element model of the lumbar spine. One-third of body weight was applied at the center of the L1 vertebra toward the superior direction for the first axial traction. Anterior translation of L4 spinal bone was considered as the second local decompression. The lordosis angle between the superior planes of the L1 vertebra and sacrum was 44.6° at baseline, 35.2° with global axial traction, and 46.4° with local decompression. The fibers of annulus fibrosus in the posterior region, and intertransverse and posterior longitudinal ligaments experienced stress primarily during global axial traction, these stresses decreased during local decompression. A combination of global axial traction and local decompression would be helpful for reducing tensile stress on the fibers of the annulus fibrosus and ligaments, and intradiscal pressure in traction therapy. The present study could be used to develop a safer and more effective type of traction therapy.


2009 ◽  
Vol 44 (5) ◽  
pp. 475-481 ◽  
Author(s):  
Joseph M. Hart ◽  
D. Casey Kerrigan ◽  
Julie M. Fritz ◽  
Christopher D. Ingersoll

Abstract Context: Isolated lumbar paraspinal muscle fatigue causes lower extremity and postural control deficits. Objective: To describe the change in body position during gait after fatiguing lumbar extension exercises in persons with recurrent episodes of low back pain compared with healthy controls. Design: Case-control study. Setting: Motion analysis laboratory. Patients or Other Participants: Twenty-five recreationally active participants with a history of recurrent episodes of low back pain, matched by sex, height, and mass with 25 healthy controls. Intervention(s): We measured 3-dimensional lower extremity and trunk kinematics before and after fatiguing isometric lumbar paraspinal exercise. Main Outcome Measure(s): Measurements were taken while participants jogged on a custom-built treadmill surrounded by a 10-camera motion analysis system. Results: Group-by-time interactions were observed for lumbar lordosis and trunk angles (P < .05). A reduced lumbar spine extension angle was noted, reflecting a loss of lordosis and an increase in trunk flexion angle, indicating increased forward trunk lean, in healthy controls after fatiguing lumbar extension exercise. In contrast, persons with a history of recurrent low back pain exhibited a slight increase in spine extension, indicating a slightly more lordotic position of the lumbar spine, and a decrease in trunk flexion angles after fatiguing exercise. Regardless of group, participants experienced, on average, greater peak hip extension after lumbar paraspinal fatigue. Conclusions: Small differences in response may represent a necessary adaptation used by persons with recurrent low back pain to preserve gait function by stabilizing the spine and preventing inappropriate trunk and lumbar spine positioning.


2020 ◽  
Vol 41 (02) ◽  
pp. 119-127
Author(s):  
Tomoki Oshikawa ◽  
Koji Kaneoka ◽  
Yasuhiro Morimoto ◽  
Hiroshi Akuzawa

AbstractThe purpose of this study was to examine the influence of a history of low back pain (LBP) on pelvic and lumbar kinematics during baseball hitting. Twenty collegiate male baseball players (age, 21±1 years; height, 172.8±4.7 cm; weight, 72.7±6.2 kg; baseball experience, 13±1 years) performed 5 bat swings. Participants were categorized into the LBP group (n=10) or control group (n=10) based on having experienced lumbar spine pain due to bat swing that lasted more than 24 h within the last 12 months. Three-dimensional kinematic data of the pelvis and lumbar spine during bat swing were measured. Two-way ANOVAs were used to compare pelvic and lumbar kinematics throughout the bat swing between groups, and independent t-tests were used to compare the other outcomes between groups. There was a significant main effect between groups in lumbar flexion angle throughout the bat swing (p=0.047). The mean lumbar flexion angle of the LBP group throughout the bat swing was less than that of the control group. Additionally, the peak angular velocity of lumbar flexion of the LBP group was significantly faster than that of control group (p=0.047). These results can be helpful for longitudinal studies that identify the risk factors of LBP due to bat swing.


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