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Type: Artigo de periódico
Title: Randomized Clinical Trial On The Preservation Of The Medial Pectoral Nerve Following Mastectomy Due To Breast Cancer: Impact On Upper Limb Rehabilitation.
Author: Gonçalves, Andrea de Vasconcelos
Teixeira, Luiz Carlos
Torresan, Renato
Alvarenga, César
Cabello, César
Abstract: Systematic modifications to the surgical technique of mastectomy have been proposed with the objective of minimizing injuries to the pectoral nerves and their effects. The aim of this study was to compare muscle strength and mass of the pectoralis major muscle (PMM) and abduction and flexion of the homolateral upper limb following mastectomy among women with breast cancer undergoing either preservation or sectioning of the medial pectoral nerve (MPN). Randomized, double-blind, clinical trial on 30 women with breast cancer who underwent mastectomy between July 2002 and May 2003 in Campinas, Brazil. The women were allocated to a group, in which the MPN was preserved, or to another group in which it was sectioned. Fisher's exact and Wilcoxon tests were used to analyze the data, along with Friedman and ANOVA analysis of variance. In the MPN preserved group, 81% of the women did not lose any PMM strength, compared with 31% in the sectioned MPN group (confidence interval, CI = 1.21; relative risk, RR = 2.14; P < 0.03). There were no differences between the groups regarding muscle mass (CI = 0.32; RR = 0.89; P = 0.8), shoulder abduction (CI = 1.36; RR = 0.89; P = 0.28) and shoulder flexion (CI = 1.36; RR = 1.93; P = 0.8). Preservation of the MPN was significantly associated with maintenance of PMM strength, compared with nerve sectioning. No differences in muscle mass or in abduction and flexion of the homolateral shoulder were found between the groups. ANZCTR - 00082622.
Subject: Adult
Breast Neoplasms
Epidemiologic Methods
Middle Aged
Muscle Strength
Pectoralis Muscles
Peripheral Nerves
Upper Extremity
Citation: São Paulo Medical Journal = Revista Paulista De Medicina. v. 127, n. 3, p. 117-21, 2009.
Rights: aberto
Identifier DOI: 
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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