Abstract
Objectives: Patients with thoracic outlet syndrome (TOS) complain of many subjective symptoms that are difficult to measure and quantify. In this study we have tried to assess the weakness (muscle strength) and fatigue (endurance) of these patients with an objective measurement method, isokinetic muscle testing.
Methods: Twenty three TOS patients and 15 age matched healthy controls were enrolled in the study. Detailed histories of the patients were taken and the patients underwent complete physical examinations. Cervical radiographies, Doppler ultrasonography, electromyography, and isokinetic measurements were carried out. The isokinetic measurements were carried using the Biodex System 3 dynamometer during concentric shoulder flexions and extensions at velocities of 60°/s, 180°/s, and 240°/s.
Results: Although the muscle strengths of both groups seemed to be similar, the fatigue ratios of TOS patients at 60°/s and 180°/s were found to be higher compared with those of healthy controls (p = 0.029, p = 0.007).
Conclusions: TOS patients were found to have muscular performance similar to controls, but their upper extremities developed fatigue more easily than those of healthy individuals.
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Selected References
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- Atasoy E. Thoracic outlet compression syndrome. Orthop Clin North Am. 1996 Apr;27(2):265–303. [PubMed] [Google Scholar]
- Barnes W. S. Isokinetic fatigue curves at different contractile velocities. Arch Phys Med Rehabil. 1981 Feb;62(2):66–69. [PubMed] [Google Scholar]
- Dorazio R. A., Ezzet F. Arterial complications of the thoracic outlet syndrome. Am J Surg. 1979 Aug;138(2):246–250. doi: 10.1016/0002-9610(79)90379-9. [DOI] [PubMed] [Google Scholar]
- Elert J., Gerdle B. The relationship between contraction and relaxation during fatiguing isokinetic shoulder flexions. An electromyographic study. Eur J Appl Physiol Occup Physiol. 1989;59(4):303–309. doi: 10.1007/BF02388333. [DOI] [PubMed] [Google Scholar]
- Etheredge S., Wilbur B., Stoney R. J. Thoracic outlet syndrome. Am J Surg. 1979 Jul;138(1):175–182. doi: 10.1016/0002-9610(79)90259-9. [DOI] [PubMed] [Google Scholar]
- Gerdle B., Elert J., Henriksson-Larsén K. Muscular fatigue during repeated isokinetic shoulder forward flexions in young females. Eur J Appl Physiol Occup Physiol. 1989;58(6):666–673. doi: 10.1007/BF00418515. [DOI] [PubMed] [Google Scholar]
- Kaymak Bayram, Ozçakar Levent, Oğuz Ali Kemal, Arsava Murat, Ozdöl Cağdaş. A novel finding in thoracic outlet syndrome: tachycardia. Joint Bone Spine. 2004 Sep;71(5):430–432. doi: 10.1016/j.jbspin.2003.07.007. [DOI] [PubMed] [Google Scholar]
- Roos D. B. Thoracic outlet syndrome is underdiagnosed. Muscle Nerve. 1999 Jan;22(1):126–138. doi: 10.1002/(sici)1097-4598(199901)22:1<126::aid-mus21>3.0.co;2-s. [DOI] [PubMed] [Google Scholar]
- Thorstensson A., Karlsson J. Fatiguability and fibre composition of human skeletal muscle. Acta Physiol Scand. 1976 Nov;98(3):318–322. doi: 10.1111/j.1748-1716.1976.tb10316.x. [DOI] [PubMed] [Google Scholar]
- Urschel H. C., Jr, Razzuk M. A., Hyland J. W., Matson J. L., Solis R. M., Wood R. E., Paulson D. L., Galbraith N. F. Thoraic outlet syndrome masquerading as coronary artery disease (pseudoangina). Ann Thorac Surg. 1973 Sep;16(3):239–248. doi: 10.1016/s0003-4975(10)64991-0. [DOI] [PubMed] [Google Scholar]
- Wilbourn A. J. Thoracic outlet syndrome is overdiagnosed. Muscle Nerve. 1999 Jan;22(1):130–137. doi: 10.1002/(sici)1097-4598(199901)22:1<130::aid-mus22>3.0.co;2-s. [DOI] [PubMed] [Google Scholar]
- Wood V. E., Twito R., Verska J. M. Thoracic outlet syndrome. The results of first rib resection in 100 patients. Orthop Clin North Am. 1988 Jan;19(1):131–146. [PubMed] [Google Scholar]