INFLUENCE OF PAIN AND MOBILITY IN QUALITY OF LIFE PERCEPTION IN SHOULDER DISORDERS

Abstract

Purpose: Some of nowadays treatments in shoulder pathology are focused in pain drop, but is to be evidenced than pain is the most reliable item in shoulder patient’s quality of life. The purpose of this study is to analyze quality of life in patients affected of different shoulder pathologies and check how pain and movement influence quality of life perception (QLP).

Material And Methods: 134 patients correctly filled the shoulder functional Constant score and the SF-36 score. Patients were classified by age, sex, labor status, level of education and diagnosis. There were 56 men (41,79%) and 78 women (58,21%). Mean age was 53,77 (18–85). Amongst them, 74 patients were classified as subacromial syndrome, 19 as fractures, 29 degenerative pathology and 12 as shoulder instability. Student’s T test was performed to study quantitative variables. Qualitive variables were studied using ANOVA test. Impact of pain and mobility on patients’ quality of life was assessed by Rho-Spearman’s test. Statistical regression coefficient was used to evaluate the impact of pain and mobility in perceived quality of life.

Results: There were statistically significant differences amongst age, sex and diagnosis groups (p< 0,001). Patients older than 65 years old significatively (p< 0.001) perceived worst quality of life. Women and patients affected by a degenerative disorder significatively perceived worst quality of life (p< 0.001). A relationship between movement and quality of life was founded (linear trend). In patients with preserved range of motion, changes in pain perception significatively affected PQL (p< 0,001), meanwhile patients with poor range of motion, changes in pain perception did not affect PQL (p> 0,001). The regression coefficient for pain related to SF-36 Physical component scale was 0,629 (IC: 0,301–0.958), meanwhile the regression coefficient for external rotation is 1,196 (IC: 0,693–1,699), giving thus a predominant effect of extenal rotation in PQL.

Conclusion/Discussion: Age, sex and etiology of shoulder disorder determine different perceptions of quality of life independently of the shoulder functional scoring.

Range of motion significatively affect QLP independently of the level of pain. Pain affects QLP in patients whom range of motion is preserved. External rotation is the most important item affecting QLP.

Factors determining quality of life perception should be taken into account when planning surgery strategies for different shoulder disorders.