Peckham P H, Mortimer J T, Marsolais E B
Paraplegia. 1976 Aug;14(2):115-21. doi: 10.1038/sc.1976.19.
Paralysed upper extremity muscles of 24 tetraplegic patients were examined to determine whether their lower motor neuron was intact. Primary emphasis was placed on the forearm finger flexor muscles (Flexor Digitorum Superficialis and Flexor Digitorum Profundus) and finger extensor muscles (Extensor Digitorum Communis and Extensor Indicis). It was found that the vast majority of these muscles in C4, C5 and C6 subjects retained some or all of their lower motor neurons intact. In C5 subjects, examination was performed on additional muscles that were potentially most useful in an orthosis utilising functional stimulation. Similar to the results of the finger flexor and extensor muscles, the muscles of the wrist and thumb generally had the lower motor neuron at least partially intact. A muscle that often was an exception was M. Flexor Carpi Radialis. These studies indicate that most of the forearm muscles of the upper extremity in high level spinal cord injury patients which are paralysed have the lower motor neuron totally or partially intact. With electrically induced exercise, such muscles are strengthened to functional levels of contraction. Subsequent electrical activation enables the quadriplegic patients to use the muscle functionally.
对24名四肢瘫痪患者的上肢瘫痪肌肉进行了检查，以确定其下运动神经元是否完整。主要重点放在前臂指屈肌（指浅屈肌和指深屈肌）和指伸肌（指总伸肌和示指伸肌）上。结果发现，C4、C5和C6受试者的绝大多数这些肌肉保留了部分或全部完整的下运动神经元。在C5受试者中，对在利用功能性刺激的矫形器中可能最有用的其他肌肉进行了检查。与指屈肌和指伸肌的结果相似，腕部和拇指的肌肉通常至少部分保留了完整的下运动神经元。桡侧腕屈肌通常是一个例外。这些研究表明，高位脊髓损伤患者上肢中大多数瘫痪的前臂肌肉的下运动神经元完全或部分完整。通过电诱导运动，此类肌肉可增强至功能性收缩水平。随后的电激活使四肢瘫痪患者能够功能性地使用这些肌肉。
