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Abstract：
UNASSIGNED: Hyperselective neurectomy is used to treat spastic arm paralysis. The aim of the study was to analyze the nerve branching patterns of elbow and wrist flexors/pronator to inform hyperselective neurectomy approached.
UNASSIGNED: Eighteen upper extremities of fresh cadaver specimen were dissected. The number of motor branches from the musculocutaneous nerve to biceps brachii and brachialis, median nerve to pronator teres, flexor carpi radialis and ulnar nerve to flexor carpi ulnaris were counted. The origin site of each primary motor branch was documented.
UNASSIGNED: Either biceps or brachialis was innervated by one or two primary motor branches. Pronator teres was innervated by one to three motor trunks and the pattern for flexor carpi radialis was a common trunk with other branches. The origin of the biceps and brachialis nerve trunk was located approximately 30% to 60% of the length of the arm. The median nerve branched to pronator teres and flexor carpi radialis at the region about 34mm (SD 18.8mm) above and 50mm (SD 14.9mm) below the medial epicondyle. Flexor carpi ulnaris was innervated by one to three motor trunks and the mean distance from the medial epicondyle to the origin of flexor carpi ulnaris nerve on ulnar nerve was 18.7 mm (SD 6.5mm).
UNASSIGNED: Primary motor branches to elbow flexors, wrist flexors and pronators were various, while the regions of their origins were relatively settled. It was recommended the incisions be designed according to the location of the primary motor trunks.
UNASSIGNED: Eighteen upper extremities of fresh cadaver specimen were dissected. The number of motor branches from the musculocutaneous nerve to biceps brachii and brachialis, median nerve to pronator teres, flexor carpi radialis and ulnar nerve to flexor carpi ulnaris were counted. The origin site of each primary motor branch was documented.
UNASSIGNED: Either biceps or brachialis was innervated by one or two primary motor branches. Pronator teres was innervated by one to three motor trunks and the pattern for flexor carpi radialis was a common trunk with other branches. The origin of the biceps and brachialis nerve trunk was located approximately 30% to 60% of the length of the arm. The median nerve branched to pronator teres and flexor carpi radialis at the region about 34mm (SD 18.8mm) above and 50mm (SD 14.9mm) below the medial epicondyle. Flexor carpi ulnaris was innervated by one to three motor trunks and the mean distance from the medial epicondyle to the origin of flexor carpi ulnaris nerve on ulnar nerve was 18.7 mm (SD 6.5mm).
UNASSIGNED: Primary motor branches to elbow flexors, wrist flexors and pronators were various, while the regions of their origins were relatively settled. It was recommended the incisions be designed according to the location of the primary motor trunks.
摘要：
目的：超选择性神经切除术用于治疗痉挛性手臂麻痹。该研究的目的是分析肘部和腕部屈肌/旋前肌的神经分支模式，以告知超选择性神经切除术的方法。
方法：解剖新鲜尸体标本的18个上肢。从肌皮神经到肱二头肌和肱肌的运动分支的数量，正中神经到旋前圆柱，对桡侧腕屈肌和尺神经到尺侧腕屈肌进行计数。记录了每个主要运动分支的起源位置。
结果：肱二头肌或肱肌由一个或两个主要运动分支支配。Pronator圆柱由一到三个运动干支配，radial屈肌的模式是与其他分支共同的干。肱二头肌和肱神经干的起源位于手臂长度的约30％至60％。正中神经在内侧上髁上方约34mm（SD18.8mm）和下方约50mm（SD14.9mm）的区域分支到旋前圆圆和radi屈肌。尺侧腕屈肌由一到三个运动干神经支配，从内侧上髁到尺神经上腕屈肌神经起源的平均距离为18.7mm（SD6.5mm）。
结论：主要运动分支到肘屈肌，手腕屈肌和旋前肌多种多样，而它们的起源地区相对稳定。建议根据主电机干线的位置设计切口。
方法：解剖新鲜尸体标本的18个上肢。从肌皮神经到肱二头肌和肱肌的运动分支的数量，正中神经到旋前圆柱，对桡侧腕屈肌和尺神经到尺侧腕屈肌进行计数。记录了每个主要运动分支的起源位置。
结果：肱二头肌或肱肌由一个或两个主要运动分支支配。Pronator圆柱由一到三个运动干支配，radial屈肌的模式是与其他分支共同的干。肱二头肌和肱神经干的起源位于手臂长度的约30％至60％。正中神经在内侧上髁上方约34mm（SD18.8mm）和下方约50mm（SD14.9mm）的区域分支到旋前圆圆和radi屈肌。尺侧腕屈肌由一到三个运动干神经支配，从内侧上髁到尺神经上腕屈肌神经起源的平均距离为18.7mm（SD6.5mm）。
结论：主要运动分支到肘屈肌，手腕屈肌和旋前肌多种多样，而它们的起源地区相对稳定。建议根据主电机干线的位置设计切口。
