Psychological Factors That Affect Return to Sport After Surgical Intervention for Shoulder Instability: A Systematic Review

BACKGROUND: Recent advances have begun to identify the nonphysical factors facilitating successful return to sport (RTS) after shoulder instability surgery, yet little is currently known regarding psychological factors and RTS. PURPOSE/HYPOTHESIS: The purposes of this study were to (1) identify psychological factors associated with RTS, (2) evaluate the prognostic utility of various psychological factors, and (3) evaluate the available metrics used to assess psychological RTS readiness. It was hypothesized that psychological factors would be identified as critical elements influencing a patient's RTS. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: Clinical studies reporting on the psychological determinants of RTS for patients who had surgery for shoulder instability between 1996 and 2022 were identified from MEDLINE, Embase, and Cochrane databases. Demographic, clinical, and psychometric properties were extracted for pooled weighted analysis. RESULTS: Of the 969 studies screened, 24 (2.5%) met inclusion criteria. Overall, 2135 patients were included (mean age, 26.0 years; range, 17.4-35.5 years; 84.7% male). The mean time to RTS was 6.8 months (range, 3.7-11.9 months). There was a 76.3% rate of any RTS; of the 1212 patients who reported level of play at return, 305 (25.2%) were unable to perform at their prior level. Psychological reasons were cited by 85% (n = 360) of patients who did not RTS. Fear of reinjury was the most common reason (n = 154; 42.8%); other psychological factors included lack of confidence (n = 46; 12.8%), anxiety (n = 45; 12.5%), depression (n = 44; 12.2%), psychosocial factors (n = 48; 13.3%), and lack of motivation (n = 23; 6.4%). The Shoulder Instability Return to Sport after Injury, Western Ontario Shoulder Instability Index, Quick Inventory of Depressive Symptoms Self Report, Degree of Shoulder Involvement in Sports, Tampa Scale of Kinesiophobia-11, and Veterans Rand 12-Item Health Survey were reported measures for assessing psychology and RTS. CONCLUSION: Fear of reinjury was found to be the most commonly reported impediment to RTS. The psychological characteristics identified through this review may be incorporated into future RTS protocols seeking to address resilience and nonphysical factors associated with RTS.