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Effect of passive pectoralis minor stretching on scapular kinematics in scapular dyskinesia

Seema Saini, Nidhi Chandra, Tushar Palekar, and Khyati Patole

Purpose: To determine the effect of Passive pectoralis minor muscle stretching on scapular kinematics in individuals with scapular dyskinesia. Materials and Methods: The sample size was 30 subjects, who were randomly assigned to one of two groups: Group A, which received passive pectoralis minor stretch, or Group B, which received traditional exercises three days a week for four weeks. The outcome measurements, pectoralis minor length, scapular upward rotation, and lateral scapular sliding test, were measured before and after therapy. Results: The results obtained, prove a significant difference between pre and post mean values of pectoralis minor length in group A (pre 21.91 ± 3.40, post 22.87 ± 3.40) and in group B (pre 23.55 ± 2.72 posts 23.99 ± 2.72); scapular upward rotation in group A (pre 49.95 ± 1.06, post 50.61 ± 1.04) and group B (pre 52.64± 3.46, post 53.51± 3.50); lateral scapular slide test at 0 abductions in group A (pre 6.613 ± 1.04, post 6.14 ± 0.99) and group B (pre 6.84 ± 1.00, post 6.22 ± 1.01); lateral scapular slide test at 45 abductions in group A (pre 7.14 ± 1.05 and post 7.12 ± 1.03) and group B (pre 8.18± 0.99, post 7.53 ± 0.93). With an inter-group analysis, it was found, that the mean of pectoralis minor length, scapular upward rotation, and LSST at 0 abductions in group A was more significant than in group B (p<0.05). Conclusion: In individuals with scapular dyskinesia, passive pectoralis minor stretching combined with traditional strengthening exercises was found to be more effective in improving scapular kinematics.