ĐẶC ĐIỂM GIẢI PHẪU CÁC NHÁNH XUYÊN DA CỦA CUNG ĐỘNG MẠCH QUẶT NGƯỢC TRỤ SAU – ĐỘNG MẠCH BÊN TRỤ TRÊN

Abstract

Objective: To evaluate the characteristics of applied anatomy of perforators from the arch of posterior ulnar recurrent artery - superior ulnar collateral artery (PURA - SUCA). Materials and methods: A descriptive case series study was conducted on 27 fresh cadaver arms with aged ≥18 years old at the Department of Anatomy, University of Medicine and Pharmacy, Ho Chi Minh City from July to December 2022. Results: Average age is 75.2 ± 8.4 years old, male/female ratio is 4/5. 89% (24/27) of arms have a anastomosis between PURA and SUCA. From the SUCA, 93% of cases have at least one perforator with a diameter of ≥ 0.5mm, and 41% of cases have more than one perforator. The average diameter of the SUCA perforators is 0.7 ± 0.2mm (0.5-1.1mm). The average length of the SUCA perforators is 35.7 ± 28.6mm (8.2-172mm). The type of SUCA perforators according to the Mathes and Nahai classification has 31/42 (73.8%) of type A, 11/42 (26.2%) of type B, and none of type C. From the PURA, 41% of cases have at least one perforator with a diameter of ≥ 0.5mm. The average diameter of the PURA perforators is 0.7 ± 0.1mm (0.6-1mm). The average length of the PURA perforators is 32.9 ± 11.4 mm (17.4-52.6 mm). All PURA perforators pierce through the muscles to the skin. Conclusions: The PURA - SUCA arch has a high rate of anastomosis and perforators, and the fascial penetration point of the perforators is relatively constant on the medial posterior forearm and arm. This is the basis for designing and harvesting a perfortor flap from this arterial arch to cover the elbow defect or create a free flap.