Estudo anatômico da polia A1: localização por referência cutânea na superfície palmar

• Ano de defesa: 2009
• Autor(a) principal: Fiorini Júnior, Haroldo [UNIFESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Cadáver; Mão (anatomia); anatomia e histologia; Tendões; Dedo em gatilho; Trigger finger
• Link de acesso: http://repositorio.unifesp.br/handle/11600/9492

Purpose: We conducted this study to establish palmar surface parameters to allow for the exact location of the proximal limit of the flexor tendon A1 pulley in the index, middle, ring and little fingers and to evaluate the length of this pulley. Methods: We studied 280 fingers on 70 hands of 35 fresh human cadavers, initially measuring the distance between the digital-palmar and proximal interphalangeal creases (measure A), followed by dissection of the fingers and measurement of the distance between the proximal limit of the A1 pulley and the digital-palmar crease (measure B) and the length of the A1 pulley (measure C). A statistical analysis was carried out using Hotelling’s multivariate T2 test and the paired samples t-test. Results: No statistically significant difference was found between measures A and B in each finger (p > 0.05). The average length of the A1 pulley, in millimeters, was 9.83 in the index finger, 10.71 in the middle finger, 9.66 in the ring finger, and 8.06 in the little finger. Conclusions: The distance between the digital-palmar and proximal interphalangeal creases should be used as a cutaneous reference of the palmar surface for the exact location of the proximal limit of the A1 pulley in the palm of the hand, ensuring greater safety in surgical procedures such as percutaneous release of trigger finger.