Three‐dimensional study of the musculotendinous architecture of lumbar multifidus and its functional implications

Clinical Anatomy - Tập 21 Số 6 - Trang 539-546 - 2008
Alessandro L. Rosatelli1, Kajeandra Ravichandiran1, Anne Agur1
1Department of Surgery, Division of Anatomy, University of Toronto, Toronto, Canada

Tóm tắt

AbstractLumbar multifidus (LMT) is a key muscle, which provides stability to the lumbar spine, and has been shown to have altered neuromuscular recruitment following acute episodes of low back pain. Architectural parameters are important determinants of function, but have not been well documented for LMT. Therefore, the purpose of this study is to model and quantify the architecture of LMT throughout its volume. Nine male and one female formalin‐embalmed cadaveric specimens (average age 80 ± 11 years) without any evidence of spinal deformity/pathology were used. The musculotendinous components of LMT were serially dissected and digitized. Next, the data were imported into MAYA™ to create a three‐dimensional model of each segment of LMT from which architectural parameters including fiber bundle length (FBL), fiber bundle angle (FBA), and tendon length were quantified. Water displacement was used to determine volume. The data were analyzed using paired t‐tests and ANOVA followed by Tukey's post‐hoc test (P ≤ 0.05). LMT (L1–L4) has three architecturally distinct regions: superficial, intermediate, and deep. Intermediate LMT was absent in all specimens at L5. Mean FBL decreased significantly (P ≤ 0.05) from superficial (5.8 ± 1.6 cm) to deep (2.9 ± 1.1 cm) as did volume (superficial, 5.6 ± 2.3 ml; deep, 0.7 ± 0.3 ml) measured at each region. By contrast, mean FBA increased from superficial to deep. The current study lends further evidence to support the role of different regions within LMT to serve distinct functions particularly to produce movement and/or control stability. Clin. Anat. 21:539–546, 2008. © 2008 Wiley‐Liss, Inc.

Từ khóa


Tài liệu tham khảo

Adams MA, 2002, The Biomechanics of Back Pain

10.1002/ca.10112

Biedermann HJ, 1991, Muscle fibre directions of iliocostalis and multifidus: Male‐female differences, J Anat, 179, 163

10.1097/00007632-199208000-00007

10.1097/00007632-199710010-00003

De Foa JL, 1989, Muscle fibre direction of longissimus, iliocostalis and multifidus: Landmark‐derived reference lines, J Anat, 163, 243

10.1002/aja.1001330103

10.1097/01.brs.0000229232.66090.58

10.1097/00007632-199612010-00011

10.1097/00007632-200106010-00004

10.1097/00007632-199502001-00004

10.1016/j.math.2006.06.011

10.1002/ca.20469

10.1002/1097-4598(200011)23:11<1647::AID-MUS1>3.0.CO;2-M

Lundon K, 2003, Orthopedic Rehabilitation Science: Principles for Clinical Management of Nonmineralized Connective Tissue

10.1016/j.math.2006.02.004

10.1016/0268-0033(86)90147-6

10.1016/0268-0033(86)90146-4

10.1097/00007632-200201150-00013

Ng‐Thow‐Hing V, 2001, Department of Computer Science

10.1097/00007632-198902000-00008

10.1097/00002517-199212000-00001

10.1097/00002517-199212000-00002

10.1159/000147968

10.1097/00007632-199812010-00010

10.1097/00007632-199501150-00011

Thông tin
Thông tin xuất bản

Clinical Anatomy

Tập 21 Số 6

539-546

Thông tin tác giả