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Impact of order of movement on nerve strain and longitudinal excursion: a biomechanical study with implications for neurodynamic test sequencing
- Source :
- Manual therapy. 15(4)
- Publication Year :
- 2009
-
Abstract
- It is assumed that strain in a nerve segment at the end of a neurodynamic test will be greatest if the joint nearest that nerve segment is moved first in the neurodynamic test sequence. To test this assumption, the main movements of the median nerve biased neurodynamic test were applied in three different sequences to seven fresh-frozen human cadavers. Strain and longitudinal excursion were measured in the median nerve at the distal forearm. Strain and relative position of the nerve at the end of a test did not differ between sequences. The nerve was subjected to higher levels of strain for a longer duration during the sequence where wrist extension occurred first. The pattern of excursion was different for each sequence. The results highlight that order of movement does not affect strain or relative position of the nerve at the end of a test when joints are moved through comparable ranges of motion. When used clinically, different neurodynamic sequences may still change the mechanical load applied to a nerve segment. Changes in load may occur because certain sequences apply increased levels of strain to the nerve for a longer time period, or because sequences differ in ranges of joint motions.
- Subjects :
- Adult
Male
Movement
Transducers
Physical Therapy, Sports Therapy and Rehabilitation
Strain (injury)
Wrist
Cadaver
medicine
Humans
Joint (geology)
Aged
Analysis of Variance
Mechanical load
Arthrometry, Articular
business.industry
Excursion
Biomechanics
Reproducibility of Results
General Medicine
Anatomy
Middle Aged
medicine.disease
Median nerve
Biomechanical Phenomena
Median Nerve
medicine.anatomical_structure
Arm
Female
business
Subjects
Details
- ISSN :
- 15322769
- Volume :
- 15
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Manual therapy
- Accession number :
- edsair.doi.dedup.....31ed1c1e37a5626b1785b7fa1cced973