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Year : 2004  |  Volume : 52  |  Issue : 3  |  Page : 350--352

The effect of elbow position on biceps tendon reflex

Department of Physical Medicine and Rehabilitation, Gazi University, Faculty of Medicine, Ankara, Turkey

Correspondence Address:
Isik Keles
Semsettin Günaltay cd. 246. sk, Simkent Sitesi 7. Blok No: 4/22, Kirkkonaklar/Çankaya - 06610, Ankara
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Source of Support: None, Conflict of Interest: None

PMID: 15472425

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Background: Testing of tendon (T) reflex is the basic method used in the diagnostic procedure of clinical neurology. Measurement of T reflexes precisely can be a valuable adjunct to clinical examination. Quantification of T reflexes may provide more accurate results. Aims: To analyze the effect of elbow position on biceps T reflex. Settings and Design: A self-controlled clinical trial of biceps T reflex testing at the Electrophysiology Unit of the Department of Physical Medicine and Rehabilitation. Methods and Materials: Biceps T reflex was obtained utilizing a hand-held electronic reflex hammer in 50 extremities of 25 healthy volunteers and the effect of elbow position (at 90°, 120° and 150°) on reflex response was evaluated. Statistical Analysis: Repeated-measures analysis of variance by the General Linear Model and Pearson correlation test procedures. Results: Onset latency was significantly shorter at 120° of elbow position. The maximum amplitude value of biceps T reflex was obtained at 90° of elbow position. Onset latency of the reflex correlated significantly with the height and arm length but not with age. Conclusions: The electrophysiological measurement of T reflexes is an easy and useful method in the quantification of reflexes, supplying more objective data. However, when performing T reflex studies, the position of the extremity should be taken into consideration to achieve more reliable results.


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Online since 20th March '04
Published by Wolters Kluwer - Medknow