Anatomical Study of the Infrapatellar Branch of the Saphenous Nerve with Applications to Knee Surgery/Estudio Anatomico de la Rama Infrapatelar del Nervio Safeno con Aplicaciones a la Cirugia de Rodilla

The infrapatellar branch of the saphenous nerve is a cutaneous nerve that innervates the area surrounding the patella and contributes to the peripatellar plexus. This nerve is target to iatrogenic injuries during a great deal of knee procedures, such as tendon harvesting, total knee arthroplasty and...

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Bibliographic Details
Published in:International journal of morphology 2019-12, Vol.37 (4), p.1258
Main Authors: Mendes, Ricardo Berriel, Laranja, Victor Hugo Faria, Mogami, Sheijy Sergio Vieira, Ramos, Max Rogerio Freitas, Pires, Lucas Alves Sarmento, Figueiredo, Leonardo de Oliveira, Babinski, Marcio Antonio
Format: Article
Language:Spanish
Subjects:
Arthroplasty
Knee injuries
Knee replacement arthroplasty
Medical errors
Orthopedic surgery
Surgery
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Summary:The infrapatellar branch of the saphenous nerve is a cutaneous nerve that innervates the area surrounding the patella and contributes to the peripatellar plexus. This nerve is target to iatrogenic injuries during a great deal of knee procedures, such as tendon harvesting, total knee arthroplasty and medial arthroscopic approaches to the knee. Lesion to this nerve can produce sensorial loss at its innervation territory. The study conducted herein aims to observe the anatomical aspects of the infrapatellar branch in cadaveric specimens. The infrapatellar branch of the saphenous nerve of 40 male cadavers was dissected with the purpose of identifying the number of branches, its relation with the patella, tibial tuberosity and sartorius muscle. The nerve was dissected and several measurements were performed with the aid of a digital caliper. Statistical analysis was performed with the MedCalc 16.1 software. The infrapatellar branch of the saphenous nerve was present in 100% of the sample. Its mean distance from its origin to its branching point was 16.35[+ or -]6.48 mm on the right and 21.94[+ or -]4.31 mm on the left, with statistically significant differences (p < 0.05). A relatively safe zone for surgery was observed on the superior and medial aspect of the patella, which received less branches. KEY WORDS: Infrapatellar branch; Saphenous nerve; Knee surgery; Safe zones; Iatrogenic injury.
ISSN:0717-9367