Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures

INTRODUCTION: Rupture of the pectoralis major muscle appears to be increasing in athletes. However, the optimal treatment strategy has not yet been established. OBJECTIVES: To compare the isokinetic shoulder performance after surgical treatment to that after non-surgical treatment for pectoralis major muscle rupture. METHODS: We assessed 33 pectoralis major muscle ruptures (18 treated non-surgically and 15 treated surgically). Horizontal abduction and adduction as well as external and internal rotation at 60 and 120 degrees/s were tested in both upper limbs. Peak torque, total work, contralateral deficiency, and the peak torque agonist-to-antagonist ratio were measured. RESULTS: Contralateral muscular deficiency did not differ between the surgical and non-surgical treatment modalities. However, the surgical group presented twice the number of athletes with clinically acceptable contralateral deficiency (<20%) for internal rotators compared to the non-surgical group. The peak torque ratio between the external and internal rotator muscles revealed a similar deficit of the external rotation in both groups and on both sides (surgical, 61.60% and 57.80% and non-surgical, 62.06% and 54.06%, for the dominant and non-dominant sides, respectively). The peak torque ratio revealed that the horizontal adduction muscles on the injured side showed similar weakness in both groups (surgical, 86.27%; non-surgical, 98.61%). CONCLUSIONS: This study included the largest single series of athletes reported to date for this type of injury. A comparative analysis of muscular strength and balance showed no differences between the treatment modalities for pectoralis major muscle rupture. However, the number of significant clinical deficiencies was lower in the surgical group than in the non-surgical group, and both treatment modalities require greater attention to the rehabilitation process, especially for the recovery of muscle strength and balance.

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Main Authors: Fleury,Anna Maria, Silva,Antonio Carlos da, Pochini,Alberto Alberto de Castro, Ejnisman,Benno, Lira,Claudio Andre Barbosa de, Andrade,Marilia dos Santos
Format: Digital revista
Language:English
Published: Faculdade de Medicina / USP 2011
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322011000200022
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spelling oai:scielo:S1807-593220110002000222012-07-23Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical proceduresFleury,Anna MariaSilva,Antonio Carlos daPochini,Alberto Alberto de CastroEjnisman,BennoLira,Claudio Andre Barbosa deAndrade,Marilia dos Santos Isokinetic exercise exercise muscle imbalance muscle rupture orthopedics rehabilitation INTRODUCTION: Rupture of the pectoralis major muscle appears to be increasing in athletes. However, the optimal treatment strategy has not yet been established. OBJECTIVES: To compare the isokinetic shoulder performance after surgical treatment to that after non-surgical treatment for pectoralis major muscle rupture. METHODS: We assessed 33 pectoralis major muscle ruptures (18 treated non-surgically and 15 treated surgically). Horizontal abduction and adduction as well as external and internal rotation at 60 and 120 degrees/s were tested in both upper limbs. Peak torque, total work, contralateral deficiency, and the peak torque agonist-to-antagonist ratio were measured. RESULTS: Contralateral muscular deficiency did not differ between the surgical and non-surgical treatment modalities. However, the surgical group presented twice the number of athletes with clinically acceptable contralateral deficiency (<20%) for internal rotators compared to the non-surgical group. The peak torque ratio between the external and internal rotator muscles revealed a similar deficit of the external rotation in both groups and on both sides (surgical, 61.60% and 57.80% and non-surgical, 62.06% and 54.06%, for the dominant and non-dominant sides, respectively). The peak torque ratio revealed that the horizontal adduction muscles on the injured side showed similar weakness in both groups (surgical, 86.27%; non-surgical, 98.61%). CONCLUSIONS: This study included the largest single series of athletes reported to date for this type of injury. A comparative analysis of muscular strength and balance showed no differences between the treatment modalities for pectoralis major muscle rupture. However, the number of significant clinical deficiencies was lower in the surgical group than in the non-surgical group, and both treatment modalities require greater attention to the rehabilitation process, especially for the recovery of muscle strength and balance.info:eu-repo/semantics/openAccessFaculdade de Medicina / USPClinics v.66 n.2 20112011-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322011000200022en10.1590/S1807-59322011000200022
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countrycode BR
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libraryname SciELO
language English
format Digital
author Fleury,Anna Maria
Silva,Antonio Carlos da
Pochini,Alberto Alberto de Castro
Ejnisman,Benno
Lira,Claudio Andre Barbosa de
Andrade,Marilia dos Santos
spellingShingle Fleury,Anna Maria
Silva,Antonio Carlos da
Pochini,Alberto Alberto de Castro
Ejnisman,Benno
Lira,Claudio Andre Barbosa de
Andrade,Marilia dos Santos
Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
author_facet Fleury,Anna Maria
Silva,Antonio Carlos da
Pochini,Alberto Alberto de Castro
Ejnisman,Benno
Lira,Claudio Andre Barbosa de
Andrade,Marilia dos Santos
author_sort Fleury,Anna Maria
title Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
title_short Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
title_full Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
title_fullStr Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
title_full_unstemmed Isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
title_sort isokinetic muscle assessment after treatment of pectoralis major muscle rupture using surgical or non-surgical procedures
description INTRODUCTION: Rupture of the pectoralis major muscle appears to be increasing in athletes. However, the optimal treatment strategy has not yet been established. OBJECTIVES: To compare the isokinetic shoulder performance after surgical treatment to that after non-surgical treatment for pectoralis major muscle rupture. METHODS: We assessed 33 pectoralis major muscle ruptures (18 treated non-surgically and 15 treated surgically). Horizontal abduction and adduction as well as external and internal rotation at 60 and 120 degrees/s were tested in both upper limbs. Peak torque, total work, contralateral deficiency, and the peak torque agonist-to-antagonist ratio were measured. RESULTS: Contralateral muscular deficiency did not differ between the surgical and non-surgical treatment modalities. However, the surgical group presented twice the number of athletes with clinically acceptable contralateral deficiency (<20%) for internal rotators compared to the non-surgical group. The peak torque ratio between the external and internal rotator muscles revealed a similar deficit of the external rotation in both groups and on both sides (surgical, 61.60% and 57.80% and non-surgical, 62.06% and 54.06%, for the dominant and non-dominant sides, respectively). The peak torque ratio revealed that the horizontal adduction muscles on the injured side showed similar weakness in both groups (surgical, 86.27%; non-surgical, 98.61%). CONCLUSIONS: This study included the largest single series of athletes reported to date for this type of injury. A comparative analysis of muscular strength and balance showed no differences between the treatment modalities for pectoralis major muscle rupture. However, the number of significant clinical deficiencies was lower in the surgical group than in the non-surgical group, and both treatment modalities require greater attention to the rehabilitation process, especially for the recovery of muscle strength and balance.
publisher Faculdade de Medicina / USP
publishDate 2011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322011000200022
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