Cameron C Bassett, Kerry K Gilbert, Micah Lierly, Troy L Hooper, Nathan E Burgess, Gary Kearns, Jean-Michel Brismeé
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引用次数: 0
Abstract
Background: The obturator nerve may be injured during surgery or trauma. Neurodynamic testing (NDT) is theorized to assist in obturator nerve injury identification, but the optimum hip position for NDT has not been biomechanically supported.
Objectives: This study evaluated the displacement and strain of the obturator nerve within the pelvis using three NDT positions of the hip (neutral, flexion, and extension) combined with hip abduction.
Design: One-way repeated measures.
Methods: Nine cadavers were selected by consecutive sampling, and metal markers were glued to the exposed intrapelvic obturator nerves in situ. Cadavers were secured in a side-lying slumped knee bend position, and fluoroscopic images of the intrapelvic obturator nerve were taken in a starting position. Images were repeated during three testing positions: end-range hip abduction with sagittal hip positions in neutral, flexion, and extension. Images were digitized, and displacement and strain values were calculated and compared. Alpha was set at 0.05, and data were analyzed.
Results: The obturator nerve displaced distally from the starting position during end-range hip abduction with the sagittal hip position in neutral (mean = 2.76 ± 2.46 mm; p = 0.015) and extension (mean = 3.31 ± 2.14 mm; p = 0.003) but not with flexion. No lateral displacement or strain value differences were measured between the three testing positions (p = 0.948, p = 0.925, p = 0.359).
Conclusion: Obturator nerve NDT using end-range hip abduction with the sagittal hip position in neutral or extension significantly displaces the nerve distally, suggesting these positions may be most useful when performing NDT of the obturator nerve.
期刊介绍:
The Journal of Manual & Manipulative Therapy is an international peer-reviewed journal dedicated to the publication of original research, case reports, and reviews of the literature that contribute to the advancement of knowledge in the field of manual therapy, clinical research, therapeutic practice, and academic training. In addition, each issue features an editorial written by the editor or a guest editor, media reviews, thesis reviews, and abstracts of current literature. Areas of interest include: •Thrust and non-thrust manipulation •Neurodynamic assessment and treatment •Diagnostic accuracy and classification •Manual therapy-related interventions •Clinical decision-making processes •Understanding clinimetrics for the clinician