Comparison of Tendon Reflex Responses between Two Heads of Gastrocnemius in Spastic Hemiplegia and Healthy Subjects.
- Author:
Hyun Dong KIM
1
;
In Sun PARK
;
Yang Joo SONG
Author Information
1. Department of Rehabilitation Medicine, Inje University College of Medicine.
- Publication Type:Original Article
- Keywords:
Spasticity;
Medial and lateral heads of gastrocnemius;
Evoked potential;
Tendon reflex
- MeSH:
Evoked Potentials;
Head*;
Hemiplegia*;
Humans;
Muscle Spasticity*;
Muscles;
Reflex, Stretch*;
Tendons*
- From:Journal of the Korean Academy of Rehabilitation Medicine
1998;22(6):1173-1178
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: To determine the differences of the tendon reflex responses (TRR) between medial and lateral heads of gastrocnemius muscles in healthy subject and spastic patients. METHOD: The TRR of medial and lateral heads were evaluated in 20 healthy subjects and 20 spastic hemiplegic patients. From 5 repeated trials on each subject, the shortest latency and duration, and the largest peak-to-peak amplitude of TRR were chosen for the representative value. RESULTS: 1. The evoked potentials by tendon reflex in medial head of gastrocnemius demonstrated significantly higher amplitude than in the lateral head of gastrocnemius in patients (P<0.05) and the evoked potentials in lateral head of gastrocnemius demonstrated significantly higher amplitude than in the medial head of gastrocnemius in healthy patients (P<0.05). 2. Mean latency of the evoked potentials by a tendon reflex in both heads of gastrocnemius in the spastic patients and healthy subjects were not significantly different (P>0.05). 3. Mean duration of the evoked potentials by a tendon reflex in both heads of gastrocnemius in spastic patients and healthy subjects were not significantly different (P>0.05). CONCLUSION: These results indicate that the medial head of gastrocnemius is activated more than the lateral head of gastrocnemius by a tendon reflex in recording evoked potentials of the spastic patients.
