Zhou Ming, Ishizawa Akimitsu, Akashi Hideo, Suzuki Ryoji, Bando Yoshio
Department of Anatomy, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
Guidance Division, Kashiwa City Board of Education, 48-1 Oshimada, Kashiwa, 277-8503, Japan.
Anat Sci Int. 2023 Jan;98(1):99-106. doi: 10.1007/s12565-022-00675-6. Epub 2022 Jul 7.
In the present study, four types of variations of the flexor carpi radialis with accessory muscular bundles were classified depending on the origin of the accessory muscular bundle and relationships with the bicipital aponeurosis, biceps brachii, pronator teres, and coracobrachialis. Six types of insertions of the tendon of the flexor carpi radialis were also divided according to their inserted positions on the carpal and metacarpal bones. An accessory muscular bundle of the flexor carpi radialis was found in 4 (1 female and 3 males) of 68 cadavers (5.88%), with five examples in 136 arms (3.68%). It was bilateral in one cadaver and unilateral (two on the right and one on the left) in three. The insertion of the flexor carpi radialis tendon was not only on the proximal surface of the base of the second metacarpal bone but also on the third metacarpal bone, the tubercle of the trapezium, and the scaphoid. These findings and classifications are important in anatomical education, and have important significances in clinical diagnosis and therapies.
在本研究中，根据副肌束的起源以及与肱二头肌腱膜、肱二头肌、旋前圆肌和喙肱肌的关系，将桡侧腕屈肌带有副肌束的四种变异类型进行了分类。桡侧腕屈肌腱的六种止点类型也根据其在腕骨和掌骨上的止点位置进行了划分。在68具尸体中有4具（1名女性和3名男性）发现了桡侧腕屈肌的副肌束（5.88%），在136条手臂中有5例（3.68%）。其中1具尸体为双侧，3具尸体为单侧（右侧2例，左侧1例）。桡侧腕屈肌腱的止点不仅在第二掌骨基部的近端表面，还在第三掌骨、大多角骨结节和舟骨上。这些发现和分类在解剖学教学中很重要，在临床诊断和治疗中也具有重要意义。
