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The Influence of Glenohumeral Joint Posterior Capsule Tightness and Impingement Symptoms on Shoulder Impairments and Kinematics

Texto completo
Autor(es):
Rosa, Dayana P. [1] ; Borstad, John D. [2] ; Ferreira, Julia K. [1] ; Camargo, Paula R. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Dept Phys Therapy, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Coll St Scholastica, Dept Phys Therapy, Duluth, MN - USA
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: PHYSICAL THERAPY; v. 99, n. 7, p. 870-881, JUL 2019.
Citações Web of Science: 0
Resumo

Background Posterior capsule tightness (PCT) and shoulder impingement syndrome (SIS) symptoms are both associated with altered shoulder biomechanics and impairments. However, their combined effect on kinematics, pain, range of motion (ROM), strength, and function remain unknown. Objective The purpose of this study was to determine if the combination of PCT and SIS affects scapular and humeral kinematics, glenohumeral joint ROM, glenohumeral joint external rotation strength, pain, and function differently than does either factor (PCT or SIS) alone. Design The design was a cross-sectional group comparison. Methods Participants were placed into 1 of 4 groups based on the presence or absence of SIS and PCT: control group (n=28), PCT group (n=27), SIS group (n=25), and SIS+PCT group (n=25). Scapular kinematics and humeral translations were quantified with an electromagnetic motion capture system. Shoulder internal rotation and external rotation ROM, external rotation strength, and pain and Shoulder Pain and Disabilities Index scores were compared between groups with ANOVA. Results The SIS group had greater scapular internal rotation (mean difference=5.13 degrees; 95% confidence interval {[}CI]=1.53 degrees-8.9 degrees) and less humeral anterior translation (1.71 mm; 95% CI=0.53-2.9 mm) than the other groups. Groups without PCT had greater internal rotation ROM (16.05 degrees; 95% CI=5.09 degrees-28.28 degrees). The SIS+PCT group had lower pain thresholds at the levator scapulae muscle (108.02 kPa; 95% CI=30.15-185.88 kPa) and the highest Shoulder Pain and Disabilities Index score (similar to 44.52; 95% CI=33.41-55.63). Limitations These results may be limited to individuals with impingement symptoms and cannot be generalized to other shoulder conditions. Conclusions Decreased ROM and lower pain thresholds were found in individuals with both impingement symptoms and PCT. However, the combination of factors did not influence scapular and humeral kinematics. (AU)

Processo FAPESP: 14/18118-0 - Alterações biomecânicas e neurofisiológicas em indivíduos com encurtamento da cápsula posterior do ombro: avaliação e tratamento
Beneficiário:Paula Rezende Camargo
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 14/10355-3 - Alterações biomecânicas e neurofisiológicas em indivíduos com encurtamento da cápsula posterior do ombro: avaliação e tratamento
Beneficiário:Dayana Patricia Rosa
Linha de fomento: Bolsas no Brasil - Doutorado