Mao Renqun, Liu Mutian, Yao Haibo, Li Chuyan, Zhang Guolei, Chen Min, Tan Rongzhi, Chen Ganghong, Pan Rongfeng, Li Wenqing
Department of Hand-Foot Microsurgery, Shenzhen Nanshan People's Hospital, No. 89 Taoyuan Road, Nanshan District, Shenzhen, 518052, China.
Surg Radiol Anat. 2024 Dec 30;47(1):48. doi: 10.1007/s00276-024-03555-y.
This study explored the surgical technique and clinical application of the dorsal metacarpal cutaneous branch flap of the radial digital artery of the index finger.
Through the anatomical dissection of 10 hand specimens, we examined the origin and characteristics of the artery and its branches towards the hand dorsum. Furthermore, the soft tissue defects of the index finger in 12 patients admitted to our hospital between 2017 and 2021 were surgically repaired using the dorsal metacarpal cutaneous branch flap of the radial digital artery of the index finger.
The radial digital artery of the index finger had two types of origins: 70% (14 sides) were derived from the main artery of the thumb, and 30% (6 sides) were derived from the superficial palmar arch. The artery emitted 2 to 4 cutaneous branches from between the origin point and the head of the second metacarpal bone to the skin at the first dorsal interosseous muscle, with a cutaneous branch outer diameter of approximately (0.55 ± 0.01) mm, supplying the skin on the dorsum of the radial side of the hand. Clinical outcomes showed successful flap survival, without any arterial or venous vascular crises. Follow-up examinations at 1 to 3 years postoperatively showed that the skin flap had good blood supply, texture, elasticity, a natural and aesthetic appearance, and no swelling. The protective sensation was recovered and there was no need for secondary repair surgery.
The dorsal metacarpal cutaneous branch flap of the radial digital artery is a safe, reliable option for index finger tissue repair, maintaining palm skin integrity and demonstrating positive clinical efficacy.
本研究探讨食指桡侧指固有动脉手背皮支皮瓣的手术技术及临床应用。
通过对10例手部标本进行解剖，观察该动脉及其向手背分支的起源和特点。此外，对2017年至2021年我院收治的12例食指软组织缺损患者，采用食指桡侧指固有动脉手背皮支皮瓣进行手术修复。
食指桡侧指固有动脉有两种起源类型：70%（14侧）起自拇指主要动脉，30%（6侧）起自掌浅弓。该动脉在起点与第二掌骨小头之间发出2～4支皮支，至第一骨间背侧肌处皮肤，皮支外径约（0.55±0.01）mm，供应手部桡侧背侧皮肤。临床结果显示皮瓣成活良好，未发生动静脉血管危象。术后1～3年随访，皮瓣血运良好，质地、弹性佳，外观自然美观，无肿胀。保护性感觉恢复，无需二次修复手术。
食指桡侧指固有动脉手背皮支皮瓣是修复食指组织的一种安全、可靠的选择，可保持手掌皮肤完整性，临床疗效良好。
