Identification of Risk Factors Associated with Early Discontinuation of Physical Therapy Following Shoulder Surgery

Background: Postoperative physical therapy (POPT) is a critical aspect of patient recovery following orthopedic shoulder surgery. Despite the importance of POPT, some patients do not complete their course of physical therapy, which can affect postoperative recovery and outcomes. This study aimed to identify risk factors that influence patient adherence and attendance of POPT.

Methods: Patients >90 days postop from elective shoulder surgery were retrospectively recruited for this study from an urban, academic tertiary medical center. Patient charts were reviewed for demographic factors with eligible patients being contacted via telephone call to answer a questionnaire concerning their use of POPT. Inadequate levels of POPT were defined as stopping formal physical therapy earlier than the physical therapist recommended. Final analysis cohorts were compared using Fisher's Exact Test and Wilcoxon Rank Sum Test.

Results: A total of 104 patients were included in the final analysis with 84 completing POPT and 20 reporting having stopped therapy early. Patient medical history including elevated BMI (mean significance difference 3.8, [0.018 to 7.6 95% CI]) p=0.026)), being a smoker (p=0.027), having diabetes (p<0.001), and having Medicaid as their primary insurance (p=0.008) were significantly associated with stopping physical therapy earlier than recommended by the physical therapist (Table I). Demographic factors such as requiring additional assistance to get to medical appointments (p=0.012) and living farther away from a physical therapy center (p=0.007) were also substantially associated with a greater risk of stopping physical therapy earlier than recommended by the physical therapist (Table II).

Conclusion: Elevated BMI, tobacco use, diabetes, Medicaid enrollment status, requiring additional assistance to get to PT appointments, and living farther away from their physical therapy center are risk factors associated with patients stopping PT after elective shoulder surgery earlier than recommended by a physical therapist. Knowledge of these patient-specific risk factors should be considered by orthopedic surgeons and physical therapists when tailoring a POPT protocol.