[Changes and the clinical significance of muscle strength after different proportion tibial neurotomy].
OBJECTIVE
To study the changes of the muscle strength after the selective tibial neurotomy and the relationship between the changes and the quantities of neurotomy, and to discuss the clinical significances.


METHODS
Twenty-four normal SD rats were divided into 4 groups with 6 in each. In group A, the left tibia nerve were cut off by 80%. 60% in group B, 40% in group C, 20% in group D, with the right as the control side. After 6 weeks measure the strength of the crural triceps and the weight of them.


RESULTS
In all the groups muscle weight and muscle strength decreased. 88.2% strength decreased on the average in group A, 54.2% in group B, 19.5% in group C, 4.7% in group D.


CONCLUSIONS
It will not damage strength of the crural triceps to cut off below 40% tibial nerve in SD rats.
Xue
Feng
F
Department of Orthopaedics and Traumatology, People's Hospital, Peking University, Beijing 100044, China.
Jiang
Bao-guo
BG
Fu
Zhong-guo
ZG
Zhang
Dian-ying
DY
D000818:Animals; D005260:Female; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D009121:Muscle Denervation; D018482:Muscle, Skeletal / Q000294:innervation* / Q000503:physiopathology; D051381:Rats; D017207:Rats, Sprague-Dawley; D013979:Tibial Nerve / Q000601:surgery*