Surface Mapping of Motor Points in Biceps Brachii Muscle

[문형철]

motor point 는 경혈점과 90%(??)가 일치한다고 함.

정확한 지점은 어디인가? 

http://cafe.daum.net/panicbird/OU8N/42 논문에 의하면 전기치료의 pad, 자극강도, 주파수보다 중요한 치료의 핵심변수는 

위치(어디에 전기자극 pad를 댈 것인가?)이다. 

그 중요한 위치가 neuromuscular junction인 motor point.

motor point는 어떻게 찾는가? 어디에 있는가에 관한 논문이다. 

Surface Mapping of Motor Points in Biceps brachii muscle.pdf

Objective 

To localize the site of motor points within human biceps brachii muscles through surface mapping using electrophysiological method.

- 운동점의 위치를 정하기 위한 전기생리학적 방법을 사용하여 표면 지도그리기...

Method 

We recorded the compound muscle action potentials of each lattice of the biceps brachii in 40 healthy subjects. Standardized reference lines were made as the following: 1) a horizontal reference line (elbow crease) and 2) a vertical reference line connecting coracoid process and mid-point of the horizontal reference line. The Compound muscle action potentials were mapped in reference to the standardized reference lines. The locations of motor points were mapped to the skin surface, in the ratio to the length of the vertical and the half of the horizontal reference lines.

- 상완이두근의 격자에 compound muscle action potentials을 기록. 

- 운동점의 위치가 피부표면에 그려짐. 

Results 

The motor point of the short head of biceps was located at 69.0±4.9% distal and 19.1±9.5% medial to the mid-point of horizontal reference line. The location of the motor point of the long head of the biceps was 67.3±4.3% distal and 21.4±8.7% lateral. The motor point of the short head of the biceps was located more medially and distally in the male subjects compared to that in the female (p<0.05).

- 상완이두근의 단두 운동점은 69 distal, 19 medial to the mid point ...

- 운동점의 위치는 상완이두근의 장두에 67 그리고 21 외측

- 상완이두근 단두의 운동점은 내측, 말단에 ...

Conclusion 

This study showed electrophysiological motor points of the biceps brachii muscles through surface mapping. This data might improve the clinical efficacy and the feasibility of motor point targeting, when injecting botulinum neurotoxin in biceps brachii.