Three-dimensional in vivo measurement of lumbar spine segmental motion

Ruth S OCHIA; Nozomu INOUE; Susan M RENNER; Eric P LORENZ; Tae-Hong LIM; Gunnar B. J ANDERSSON; Howard S AN

doi:10.1097/01.brs.0000231435.55842.9e

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Three-dimensional in vivo measurement of lumbar spine segmental motion

Journal article

Peer reviewed

Three-dimensional in vivo measurement of lumbar spine segmental motion

Ruth S OCHIA, Nozomu INOUE, Susan M RENNER, Eric P LORENZ, Tae-Hong LIM, Gunnar B. J ANDERSSON and Howard S AN

Spine (Philadelphia, Pa. 1976), Vol.31(18), pp.2073-2078

2006

DOI: 10.1097/01.brs.0000231435.55842.9e

PMID: 16915091

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Abstract

Study Design. Fifteen asymptomatic volunteers were externally rotated and CT scanned to determine lumbar segmental motion. Objectives. To measure three-dimensional segmental motion in vivo using a noninvasive measurement technique. Summary of Background Data. Spinal instability has been implicated as a potential cause of low back pain, especially, axial rotational instability. Typically, flexion-extension lateral radiographs were used to quantify instability, but inaccurately measured translations and inability to capture out-of-plane rotations are limitations. Methods. Using a custom-calibrated rotation jig, L1–S1 CT reconstructions were created of volunteers in each of 3 positions: supine and left and right rotations of the torso with respect to the hips. Segmental motions were calculated using Euler angles and volume merge methods in three major planes. Results. Segmental motions were small (<4° or 6mm) with the greatest motions seen in axial rotation (range, 0.6° to 2.2°), lateral bending (range, −3.6° to 3.0°), and frontal translation (−1.2mm to 5.4mm). Largest motions were in the levels: L1–L2 to L3–L4. Conclusions. Complex coupled motions were measured due to external torsion and could be indicative of instability chronic patients with low back pain. The presented data provide baseline segmental motions for future comparisons to symptomatic subjects.

Neurology

Orthopedic surgery

Cerebrospinal fluid. Meninges. Spinal cord

Diseases of the osteoarticular system

Biological and medical sciences

Medical sciences

Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases

Diseases of the spine

Nervous system (semeiology, syndromes)

Details

Title: Subtitle: Three-dimensional in vivo measurement of lumbar spine segmental motion
Creators: Ruth S OCHIA - Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
Nozomu INOUE - Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
Susan M RENNER - Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States
Eric P LORENZ - Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
Tae-Hong LIM - Department of Bioengineering, University of Iowa, Iowa City, IA, United States
Gunnar B. J ANDERSSON - Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
Howard S AN - Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
Resource Type: Journal article
Publication Details: Spine (Philadelphia, Pa. 1976), Vol.31(18), pp.2073-2078
DOI: 10.1097/01.brs.0000231435.55842.9e
PMID: 16915091
NLM abbreviation: Spine (Phila Pa 1976)
ISSN: 0362-2436
eISSN: 1528-1159
Publisher: Lippincott Williams & Wilkins; Philadelphia, PA; Hagerstown, MD
Language: English
Date published: 2006
Academic Unit: Roy J. Carver Department of Biomedical Engineering
Record Identifier: 9984064114902771

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