Cross-education effects on shoulder rotator muscle strength and function after shoulder stabilization surgery: a randomized controlled trial.
J Shoulder Elbow Surg
; 33(4): 804-814, 2024 Apr.
Article
em En
| MEDLINE
| ID: mdl-38122890
ABSTRACT
HYPOTHESIS:
This study aimed to investigate the effects of cross education (CE) on rotator cuff (RC) muscle strength recovery and shoulder function in patients who underwent arthroscopic anterior shoulder stabilization surgery.METHODS:
Twenty-eight patients who underwent shoulder stabilization surgery were included in the study (age, 25 ± 6 years; body mass index, 24.8 ± 3.6 kg/m2). The patients were randomly divided into either the CE group (n = 14) or the control group (n = 14). All patients received a standardized rehabilitation program until the end of the 12th postoperative week. The CE group also received isokinetic training of the nonoperative shoulder focusing on the RC muscles (twice a week, 3 sets of 10 repetitions). RC muscle strength was measured preoperatively and at 3 and 6 months postoperatively using an isokinetic dynamometer at 60°/s and 180°/s angular velocities. Shoulder function was assessed with the Closed Kinetic Chain Upper Extremity Stability Test and Y-Balance Test-Upper Quarter. Analyses of covariance were used for the statistical analyses.RESULTS:
At 6 months postoperatively, at 60°/s angular velocity, there was higher internal rotator strength in the CE group (P = .02) and similar external rotator strength (P = .62) between the groups. At 180°/s angular velocity, both internal rotator strength (P = .04) and external rotator strength (P = .02) were higher in the CE group. The Closed Kinetic Chain Upper Extremity Stability Test (P = .47), Y-Balance Test-Upper Quarter (P = .95), and Western Ontario Shoulder Instability Index (P = .12) scores were similar between the groups at 6 months after surgery.CONCLUSIONS:
CE in the early period of postoperative rehabilitation following stabilization surgery improves RC strength recovery. However, it has no effect on functional outcomes. Integrating a CE program into the postoperative rehabilitation protocol may help to improve dynamic shoulder stability but not functional capacity.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Articulação do Ombro
/
Lesões do Manguito Rotador
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Instabilidade Articular
Limite:
Adult
/
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article