Abstract:
STUDY DESIGN:Controlled laboratory and cross-sectional study designs. OBJECTIVE:To determine psoas major (PM) muscle architectural properties, in vivo sarcomere-length operating range, and passive mechanical properties. SUMMARY OF BACKGROUND DATA:PM is an important hip flexor but its role in lumbar spine function is not fully understood. Several investigators have detailed the gross anatomy of PM, but comprehensive architectural data and in vivo length-tension and passive mechanical behaviors have not been documented. METHODS:PM was isolated in 13 cadaver specimens, permitting architectural measurements of physiological cross-sectional area (PCSA), normalized fiber length (Lf), and Lf:muscle length (Lm) ratio. Sarcomere lengths were measured in vivo from intraoperative biopsies taken with the hip joint in flexed and extended positions. Single-fiber and fiber bundle tensile properties and titin molecular weight were then measured from separate biopsies. RESULTS:Architecturally, average PCSA was 18.45 ± 1.32 cm2, average Lf was 12.70 ± 2 cm, and average Lf: Lm was 0.48 ± 0.06. Intraoperative sarcomere length measurements revealed that the muscle operates from 3.18 ± 0.20 μm with hip flexed at 10.7° ± 13.9° to 3.03 ± 0.22 μm with hip flexed at 55.9° ± 21.4°. Passive mechanical data demonstrated that the elastic modulus of the PM muscle fibers was 37.44 ± 9.11 kPa and of fiber bundles was 55.3 ± 11.8 kPa. CONCLUSION:Analysis of PM architecture demonstrates that its average Lf and passive biomechanical properties resemble those of the lumbar erector spinae muscles. In addition, PM sarcomere lengths were confined to the descending portion of the length-tension curve allowing the muscle to become stronger as the hip is flexed and the spine assumes a forward leaning posture. These findings suggest that the human PM has architectural and physiologic features that support its role as both a flexor of the hip and a dynamic stabilizer of the lumbar spine.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Regev GJ,Kim CW,Tomiya A,Lee YP,Ghofrani H,Garfin SR,Lieber RL,Ward SRdoi
10.1097/BRS.0b013e31821847b3subject
Has Abstractpub_date
2011-12-15 00:00:00pages
E1666-74issue
26eissn
0362-2436issn
1528-1159journal_volume
36pub_type
杂志文章相关文献
SPINE文献大全abstract:STUDY DESIGN:A test-retest design was used. OBJECTIVE:To assess interexaminer reliability of the McKenzie method for performing clinical tests and classifying patients with low back pain. SUMMARY OF BACKGROUND DATA:Clinical methods and tests classifying patients with nonspecific low back pain have been based mainly o...
journal_title:Spine
pub_type: 临床试验,杂志文章
doi:10.1097/00007632-200204150-00016
更新日期:2002-04-15 00:00:00
abstract:STUDY DESIGN:A case-control study. OBJECTIVE:To compare health-related quality of life and low back pain of healthy subjects with those of patients with nonidiopathic scoliosis (non-IS) and idiopathic scoliosis (IS) 21 years or more after surgery. SUMMARY OF BACKGROUND DATA:There have been a very small number of repo...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0b013e31825a22c2
更新日期:2012-10-15 00:00:00
abstract:STUDY DESIGN:Recent literature regarding the psychological impact of scoliosis was reviewed. OBJECTIVE:To determine the impact of scoliosis on health-related quality of life (HRQL), psychosocial functioning, and body image to improve patient outcomes. SUMMARY OF BACKGROUND DATA:Adolescents and adults with adolescent ...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/01.brs.0000249555.87601.fc
更新日期:2006-12-15 00:00:00
abstract:STUDY DESIGN:Prospective follow-up study. OBJECTIVE:Evaluation of the diagnostic assessment and clinical significance of the intravertebral cleft in painful, long-standing osteoporotic vertebral compression fractures (OVCFs) treated with percutaneous vertebroplasty (PVP). SUMMARY OF BACKGROUND DATA:Patients with pain...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0b013e318238bf22
更新日期:2012-05-15 00:00:00
abstract:STUDY DESIGN:A randomized controlled trial was conducted. OBJECTIVE:To determine the efficacy of osteopathic manipulative treatment as a complementary treatment for chronic nonspecific low back pain. SUMMARY OF BACKGROUND DATA:Osteopathic manipulative treatment may be useful for acute or subacute low back pain. Howev...
journal_title:Spine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.BRS.0000067110.61471.7D
更新日期:2003-07-01 00:00:00
abstract::Neurologic complications resulting from surgery for 384 cases of cervical myelopathy (cervical soft disc herniation, spondylosis, ossification of the posterior longitudinal ligament) were reviewed. Surgical procedures performed included 134 anterior interbody fusions (Cloward or Robinson-Smith technique), 70 subtotal ...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-199111000-00006
更新日期:1991-11-01 00:00:00
abstract:STUDY DESIGN:Use of a rule-based automated algorithm to determine sources of variability in radiographic classification. OBJECTIVES:To determine whether unambiguous rules encoded in a computer program would ensure reliable classification. SUMMARY OF BACKGROUND DATA:Reliability problems have been identified in classif...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-200212150-00014
更新日期:2002-12-15 00:00:00
abstract:STUDY DESIGN:Cervical facet capsular strains were determined during bending and at failure in the human cadaver. OBJECTIVE:To determine the effect of an axial pretorque on facet capsular strains and estimate the risk for subcatastrophic capsular injury during normal bending motions. SUMMARY OF BACKGROUND DATA:Epidemi...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-200005150-00007
更新日期:2000-05-15 00:00:00
abstract:STUDY DESIGN:Cross-sectional study of 880 outpatients with low back and/or leg pain regarding age distribution of three radiologic factors. OBJECTIVES:To investigate the proportion and relationship of three individual radiologic factors with age on segmental instability in sagittal plane in consecutive age groups. SU...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/01.BRS.0000097162.80495.66
更新日期:2003-12-01 00:00:00
abstract:STUDY DESIGN:Prospective cohort. OBJECTIVE:The purpose of this study was to evaluate changes in bone mineral density (BMD) in the intertransverse fusion mass as representative for the process of bone remodeling after spinal fusion. SUMMARY OF BACKGROUND DATA:Intertransverse bone graft is frequently applied to facilit...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0b013e318276fa27
更新日期:2013-04-15 00:00:00
abstract::The study is an investigation into the form of the abdominal pressure reflex in normal individuals under isometric loading of the torso. Various directions of load are imposed, and both flexed and upright postures are adopted. The sensitivity of the pressurization to the applied moment is calculated, the form of the r...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-198003000-00009
更新日期:1980-03-01 00:00:00
abstract::Chylothorax as a complication of anterior thoracic spine fusion is described in the case of a male with congenital kyphosis. Treatment with protracted chest tube drainage was required, along with dietary modification in which fat ingestion was restricted. This complication is reported to occur in 0.2% of intrathoracic...
journal_title:Spine
pub_type: 杂志文章
doi:
更新日期:1982-01-01 00:00:00
abstract:STUDY DESIGN:The role of bone graft force in stabilizing an instrumented cervical spine was evaluated for one-level and three-level corpectomy models using in vitro experiments. OBJECTIVES:To investigate the role of bone graft force in enhancing stability of anterior cervical plate, and to study effects of fatigue loa...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-200007010-00008
更新日期:2000-07-01 00:00:00
abstract::Chronic cervical pain is not always attributable to radiculopathy. Pain may derive from peripheral myofascial syndromes and/or central inflammatory root irritation from degradation of discal proteoglycans. This concept is presented with its application in 30 patients with follow-up observations up to 30 months. Twelve...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-199210001-00004
更新日期:1992-10-01 00:00:00
abstract:STUDY DESIGN:This study investigated the effect of neck muscle precontraction in aware occupants in whiplash. Head angulation relative to T1 and facet joint capsular ligament distractions were compared between aware and unaware occupants. OBJECTIVE:To quantify changes in facet joint capsular ligament distractions betw...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/01.brs.0000240210.23617.e7
更新日期:2006-09-15 00:00:00
abstract::The thoracolumbar fascia was studied by dissection in ten adult human cadavers. The posterior layer of this fascia was found to consist of two laminae. The superficial lamina is formed by the aponeurosis of latissimus dorsi. The deep lamina consists of bands of fibers passing caudolaterally from the midline. Both lami...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-198403000-00006
更新日期:1984-03-01 00:00:00
abstract:STUDY DESIGN:A large animal study comparing interbody fusion of a bioresorbable scaffold loaded with either low-dose recombinant human bone morphogenetic protein 2 (rhBMP-2) or bone marrow-derived multipotent stromal cells (BMSCs). OBJECTIVE:To compare the quality of fusion resulting from implantation of medical grade...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0b013e31822576a4
更新日期:2011-10-01 00:00:00
abstract::The incredible career of Henry H. Bohlman, MD, spanned over four decades at University Hospitals Case Medical Center. He was an innovator and pioneer, designing several techniques for the management of several spinal pathologies while advocating the anterior approach to the spine. Dr. Bohlman's legacy is preserved in ...
journal_title:Spine
pub_type: 传,历史文章,杂志文章
doi:10.1097/BRS.0000000000001690
更新日期:2016-10-15 00:00:00
abstract:STUDY DESIGN:Risks and benefits of using a tibial graft for posterior spinal fusion in neuromuscular scoliosis were evaluated in a long-term follow-up study. A consecutive series of 72 patients underwent posterior spinal fusion for neuromuscular scoliosis. OBJECTIVES:Radiologic outcome was assessed to evaluate the qua...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-199407001-00012
更新日期:1994-07-15 00:00:00
abstract:STUDY DESIGN:In vitro accuracy assessment of a novel virtual fluoroscopy system. OBJECTIVES:To investigate a new technology combining image-guided surgery with C-arm fluoroscopy. SUMMARY OF BACKGROUND DATA:Fluoroscopy is a useful and familiar technology to all musculoskeletal surgeons. Its limitations include radiati...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-200102150-00009
更新日期:2001-02-15 00:00:00
abstract:STUDY DESIGN:Case control comparative series. OBJECTIVE:Describe surgical range adolescent idiopathic scoliosis (AIS) patients electing to forgo surgery and compare health-related quality-of-life outcomes to a similar cohort of operated AIS patients by the same single surgeon. SUMMARY OF BACKGROUND DATA:No data have ...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0000000000002004
更新日期:2017-08-15 00:00:00
abstract:STUDY DESIGN:Retrospective analysis. OBJECTIVE:To compare outcomes and complication rates between patients with and without Parkinson's disease (PD) patients undergoing surgery for adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA:There is limited literature evaluating the impact of PD on long-term outcomes af...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0000000000002998
更新日期:2019-07-15 00:00:00
abstract:STUDY DESIGN:A biomechanical study was designed to assess implant cut-out of three different angular stable anterior spinal implants. Subsidence of the implant relative to the vertebral body was measured during an in vitro cyclic loading test. OBJECTIVES:The objective of the study was to evaluate two prototypes (Synth...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/01.brs.0000199894.63450.70
更新日期:2006-02-15 00:00:00
abstract:STUDY DESIGN:Systematic literature review and expert survey OBJECTIVE.: The aim of this study was to determine factors associated with neurologic improvement in patients with neurologic deficits secondary to metastatic epidural spinal cord compression (MESCC). Clear understanding of these factors will guide surgical de...
journal_title:Spine
pub_type: 杂志文章,评审
doi:10.1097/BRS.0000000000001827
更新日期:2016-10-15 00:00:00
abstract:STUDY DESIGN:A finite element model of the ligamentous cervical spinal segment was used to compute loads in various structures in response to clinically relevant loading modes. OBJECTIVE:To predict biomechanical parameters, including intradisc pressure, tension in ligaments, and forces across facets that are not pract...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-199803150-00008
更新日期:1998-03-15 00:00:00
abstract:STUDY DESIGN:Retrospective review of medical records. OBJECTIVE:To describe pre- and postoperative ambulatory status and lower limb motor power, and compare characteristics of patients with metastatic spinal cord compression (MSCC) who were ambulatory at 48 hours postoperatively with those of patients with MSCC who we...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/BRS.0b013e3182927559
更新日期:2013-06-01 00:00:00
abstract:STUDY DESIGN:Concurrent, prospective, randomized, and observational cohort study. OBJECTIVE:To assess the 4-year outcomes of surgery versus nonoperative care. SUMMARY OF BACKGROUND DATA:Although randomized trials have demonstrated small short-term differences in favor of surgery, long-term outcomes comparing surgical...
journal_title:Spine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1097/BRS.0b013e31818ed8f4
更新日期:2008-12-01 00:00:00
abstract::Twenty-five patients with metastatic thoracic and lumbar spine disease were initially treated by the authors with posterolateral debridement and decompression, along with posterior segmental spinal instrumentation. Ten patients had marked paresis, nine had signs of spinal cord or cauda equina compression without pares...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-198812000-00010
更新日期:1988-12-01 00:00:00
abstract::Thirty-seven patients underwent surgery for late post-traumatic kyphosis in the lumbar, thoracolumbar, or thoracic spine. Indications for surgery included: increasing deformity, pain, and persistent neurologic deficit with paraparesis in eight, and development of late spinal stenosis in a further nine patients. All pa...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-198904000-00006
更新日期:1989-04-01 00:00:00
abstract::Lumbar spinal flexion and extension motion was measured radiographically and from the back surface curvature in 42 patients with low-back pain to determine whether the surface measurements provided accurate measurement of the total lumbar spinal motion and its distribution by vertebral level. Also, a biomechanical mod...
journal_title:Spine
pub_type: 杂志文章
doi:10.1097/00007632-198705000-00009
更新日期:1987-05-01 00:00:00