Anatomical parameters in the lateral ulnar collateral ligament reconstruction: a cadaver study Parametros anat micos na reconstru o do ligamento colateral lateral ulnar do cotovelo: estudo em cadáveres

INTRODUCTION: The purpose of this study was to indentify the ulnar insertion of the LUCL using the olecranon tip and the radial head as parameters to guide the ligament reconstruction surgery. METHODS: Thirteen elbows of eight fresh cadavers were dissected for the study of the LUCL. The distances between the proximal and distal insertion of the LUCL (footprint), between the radial head and the footprint and between the olecranon tip and the footprint were measure with a digital pachimeter. RESULTS: The average distance from the radial head to the proximal and distal ulnar insertion of the LUCL was 13.6 and 22.99 mm, respectively. The average distance between the olecranon tip and the proximal and distal ulnar insertion of the LUCL was 38.25 and 47.6 respectively. The mean length of the LUCL footprint was 9.35 mm. CONCLUSIONS: The LUCL insertion has a wide footprint with average 9.3 mm (7.5-11 mm). Ulnar insertion half point be located at 18.2 mm of the radial head and at 42.9 mm of olecranon tip. OBJETIVO: Identificar a inser o ulnar do ligamento colateral lateral ulnar (LCLU) com o uso da ponta do olécrano e da cabe a do rádio como parametros fixos para orientar a cirurgia de reconstru o ligamentar. MéTODOS: Foram dissecados 13 cotovelos de cadáveres adultos frescos para estudo do LCLU. Com paquímetro digital mediram-se as distancias entre as inser es proximal e distal do LCLU na ulna (footprint), entre a cabe a do rádio e a zona do footprint e entre o olécrano e a zona do footprint. RESULTADOS: A distancia média da cabe a do rádio ao ponto de inser o proximal e distal do LCLU foi de 13,6 e 22,99 mm, respectivamente, da ponta do olécrano à inser o proximal e distal do LCLU foi 38,25 e 47,6 mm, respectivamente, e o comprimento médio do footprint do LCLU foi de 9,35 mm. CONCLUS ES: A inser o do LCLU tem um footprint amplo com média de 9,3 mm (7,5-11 mm). O ponto médio de inser o ulnar situa-se a 18,2 mm da cabe a do rádio e a 42,9 mm da ponta do olécrano.