RT Journal Article
T1 Anatomic relationship of the proximal nail matrix to the extensor hallucis longus tendon insertion
A1 Palomo López, P.
A1 López López, D.
A1 M.E. Losa Iglesias, 
A1 Becerro De Bengoa Vallejo, Ricardo
A1 Prados Frutos, Juan Carlos
A1 Murillo González, Jorge Alfonso
AB Background: The purpose of this study was to delineate the relationship of the terminal extensor hallucis longus tendon insertion to the proximal limit of the nail matrix of the great toe.Material and methods: Fifty fresh-frozen human cadaver great toes with no evidence of trauma (average age, 62.5 years; 29 males and 21 females) were used for this study. Under 25X magnification, the proximal limit of the nail matrix and the terminal bony insertion of the extensor hallucis longus tendons were identified. The distance from the terminal tendon insertion to the nail matrix was ascertained using precision calipers, an optical microscope, and autocad(®) software for windows. Twenty-five great toes were placed in a neutral formalin solution and further analysed by histological longitudinal-sections. The specimens were stained with haematoxylin and eosin and examined microscopically to determine the presence of the extensor hallucis longus tendon along the dorsal aspect of the distal phalanx of each great toe.Results: The main result we found in great toes was that the extensor tendon is between the matrix and the phalanx and extends dorsally to the distal aspect of the distal phalanx in all, 100%, specimens. The nail matrix of the great toe is not attached to the periosteum of the dorsal aspect of the base of the distal phalanx as is the case for fingers, because the extensor hallucis tendon is plantar or directly underneath the nail matrix and the tendon is dorsal to the bone.Conclusions: We have found that the extensor tendon is between the matrix and the phalanx and extends dorsally to the distal aspect of the distal phalanx. The nail matrix of the great toe is not attached to the periosteum of the dorsal aspect of the base of distal phalanx as is the case in fingers, because the extensor hallucis tendon is plantar or directly underneath the nail matrix and the tendon is dorsal to the bone. Our anatomic study demonstrates that the proximal limit of the matrix and nail bed of the human great toe are dorsal and overlapping the terminal extensor hallucis longus tendon until its distal bony insertion in all specimens.
PB WILEY
SN 0926-9959
SN 1468-3083
YR 2015
FD 2015-03-23
LK https://hdl.handle.net/20.500.14352/102558
UL https://hdl.handle.net/20.500.14352/102558
LA eng
NO Palomo López P, Becerro de Bengoa Vallejo R, López López D, Prados Frutos JC, Alfonso Murillo González J, Losa Iglesias ME. Anatomic relationship of the proximal nail matrix to the extensor hallucis longus tendon insertion. J Eur Acad Dermatol Venereol. 2015 Oct;29(10):1967-71.
DS Docta Complutense
RD 20 ago 2024