Yuri da Cunha Nakamichi

Pontifícia Universidade Católica de São Paulo

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Luiz Angêlo Vieira

Pontifícia Universidade Católica de São Paulo

Edie Benedito Caetano

Pontifícia Universidade Católica de São Paulo

Rodrigo Guerra Sabongi

Universidade Federal de São Paulo

Maico Minoru Sawada

Pontifícia Universidade Católica de São Paulo

Maurício Tadeu Nakasone

Pontifícia Universidade Católica de São Paulo

Renato Alves de Andrade

Universidade Estadual de Campinas (UNICAMP)

Maurício Ferreira Caetano

Universidade de Sorocaba

João José Sabongi Neto

Universidade de Sorocaba

Camilo Partezani Helito

Universidade de São Paulo

Túlio Pereira Cardoso

Pontifícia Universidade Católica de São Paulo

Cooperative Institutions

Pontifícia Universidade Católica de São Paulo

Universidade de São Paulo

Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo

Universidade Brasil

Instituto Nacional de Traumatologia e Ortopedia

Faculdade de Medicina do ABC

Universidade de Sorocaba

Medico

Hospital Sírio-Libanês

Hospital Universitário da Universidade de São Paulo

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Anastomosis Between the Deep Branch of Ulnar Nerve and a Branch of the Median Nerve (Cannieu-Riché Anastomosis) and Thenar Muscles Innervation. Anatomical Study and Clinical Implications

International Journal of Morphology (2018)

Edie Benedito Caetano Luiz Angêlo Vieira Yuri da Cunha Nakamichi Maico Minoru Sawada Renato Alves de Andrade

The aim of this paper was to report the incidences of the anastomosis between deep branch of ulnar nerve and a branch of the median nerve commonly named Cannieu-RichÃ© anastomosis (CRA) and thenar muscles innervation. The anatomical dissection of 80 limbs from 40 fresh adult cadavers were performed in the Department of Anatomy at the Medical School of the Catholic University of SÃ£o Paulo. The incidence of CRA and thenar muscle innervation were studied. The CRA was found in all of the dissected hands (100 %). The abdutor pollicis brevis and the opponens pollicis muscle are innervated exclusively by median nerve in all dissected hands. The superficial head of flexor pollicis brevis was innervated by the median nerve in of 56 the hands (70 %), in 24 (30 %) it had double innervation (median nerve and deep branch of ulnar nerve). The deep head of flexor pollicis brevis were absent in 11 hands (14 %), in 52 hands (65 %), a double innervation was observed. In 14 (17.5 %) exclusively by deep branch of ulnar nerve and in 3 hands (3.6 %) exclusively by a branch of median nerve. The oblique head of adductor pollicis muscle was innervated only by deep branch of ulnar nerve in 66 hands (82 %) of dissected hands, 14 (17.5 %) had a double innervation. The transverse head of adductor pollicis was innervated exclusively by deep branch of ulnar nerve in 77 hands (96.4 %), and in 3 (3.6 %) had a double innervation. According to our study the pattern of innervation was more frequent in relation to the flexor pollicis brevis muscle and should be considered as a normal pattern, in that the superficial head receives innervation of branches of median nerve, and the deep head receives innervation of deep branch of ulnar nerve and branches of median nerve (dual innervation). The abductor pollicis brevis and opponens pollicis received innervation exclusively by median nerve. Both the oblique and transverse head of adductor pollicis exclusively by ulnar nerve. The RCA was found in all of the dissected hands (100 %).

Adductor pollicis muscle

Reinnervation

10.4067/s0717-95022018000100007

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Flexor Pollicis Brevis Muscle. Anatomical Study and Clinical Implications

The Open Orthopaedics Journal (2017)

Edie Benedito Caetano Yuri da Cunha Nakamichi Renato Alves de Andrade Maico Minoru Sawada Maurício Tadeu Nakasone

This paper reports anatomical study of nature, incidence, innervation and clinical implications of Flexor Pollicis Brevis muscle (FPB).The anatomical dissection of 60 limbs from 30 cadavers were performed in the Department of Anatomy of Medical School of Catholic University of São Paulo.The superficial head of FPB has been innervated by the median nerve in 70% and in 30% it had double innervation. The deep head of FPB were absent in 14%, in 65%, occurred a double innervation. In 17.5% by deep branch of ulnar nerve and in 3.6% by recurrent branch of median nerve.The pattern of innervation more frequent in relationship to the flexor pollicis brevis muscle and should be considered as a normal pattern is that superficial head receives innervation of branches of median nerve and the deep head receives innervation of ulnar and median nerve.

10.2174/1874325001711011321

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Estudo anatômico do túnel radial e suas implicações nas síndromes compressivas

Revista Brasileira de Ortopedia (2019)

Edie Benedito Caetano Luiz Angêlo Vieira João José Sabongi Neto Maurício Ferreira Caetano Rodrigo Guerra Sabongi

Objective The purpose of the present study was to analyze the structures in the radial tunnel that can cause posterior interosseous nerve entrapment. Methods A total of 30 members of 15 adult cadavers prepared by intra-arterial injection of a 10% solution of glycerol and formalin were dissected. All were male, belonging to the laboratory of anatomy of this institution. Results The branch for the supinator muscle originated from the posterior interosseous nerve in all limbs. We identified the Frohse arcade with a well-developed fibrous constitution in 22 of the 30 dissected limbs (73%) and of muscular constitution in 8 (27%). The distal margin of the supinator muscle presented fibrous consistency in 7 of the 30 limbs (23.5%) and muscular appearance in 23 (76.5%). In the proximal margin of the extensor carpi radialis brevis muscle, we identified the fibrous arch in 18 limbs (60%); in 9 (30%) we noticed the arcade of muscular constitution; in 3 (10%) there was only the radial insertion, so that it did not form the arcade. Conclusion The Frohse arcade and the arcade formed by the origins of the extensor carpi radialis brevis are normal anatomical structures in adult cadavers. However, from the clinical point of view, these structures have the potential to cause entrapment of the posterior interosseous nerve.

10.1055/s-0039-1700821

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Anatomical Study of Radial Tunnel and its Clinical Implications in Compressive Syndromes

Edie Benedito Caetano Luiz Angêlo Vieira João José Sabongi Neto Maurício Ferreira Caetano Rodrigo Guerra Sabongi

Posterior interosseous nerve

Radial nerve

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Why Do Authors Differ With Regard to the Femoral and Meniscal Anatomic Parameters of the Knee Anterolateral Ligament?

Orthopaedic Journal of Sports Medicine (2016)

Camilo Partezani Helito Carlos do Amaral Yuri da Cunha Nakamichi Riccardo Gomes Gobbi Marcelo Batista Bonadio

No consensus exists regarding the anatomic characteristics of the knee anterolateral ligament (ALL). A critical analysis of the dissections described in previous studies allows the division of the ALL into 2 groups with similar characteristics. The presence of considerable variability suggests that the authors may not be referring to the same structure.To perform a lateral anatomic dissection, by layers, seeking to characterize the 2 variants described for the ALL on the same knee. We hypothesized that we would identify the 2 variants described for the ALL and that these variants would have distinct characteristics.Descriptive laboratory study.Thirteen unpaired cadaveric knees were used in this study. The dissection protocol followed the parameters described in previous studies. Immediately below the iliotibial tract, we isolated a structure designated as the superficial ALL, whereas between this structure and the articular capsule, we isolated a structure designated as the deep ALL. The 2 structures were measured for length at full extension and at 90° of flexion and for distance from the tibial insertion relative to the Gerdy tubercle. Potential contact with the lateral meniscus was also evaluated. After measurements were obtained, the 2 dissected structures underwent histologic analysis.The superficial ALL presented a posterior and proximal origin to the center of the lateral epicondyle, its length increased on knee extension, and it exhibited no contact with the lateral meniscus. The deep ALL was located in the center of the lateral epicondyle, its length increased on knee flexion, and it presented a meniscal insertion. Both structures had a similar tibial insertion site; however, the insertion site of the deep ALL was located more posteriorly. The analysis of the histological sections for both structures indicated the presence of dense and well-organized collagen fibers.This anatomic study clearly identified 2 structures, described as the superficial and deep ALL, which were consistent with previous but conflicting descriptions of the ALL.This study clarifies numerous controversies encountered in anatomic studies of the ALL. Knowledge regarding the existence of 2 distinct structures in the anterolateral knee will allow more accurate evaluation of their functions and characteristics.

Cadaveric spasm

Anterolateral ligament

Epicondyle

Lateral meniscus

Knee flexion

Meniscus

10.1177/2325967116675604

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Citations (65)