Symptomatic Thromboembolic Complications After Shoulder Arthroplasty

Background: Venous thromboembol ism (VTE) complications, including deep vein thrombosis and pulmonary embolism, are dreaded complications of orthopaedic surgical procedures that can result in substantial morbidity and mortality. There is a paucity of data examining risk factors for VTE in shoulder arthroplasty. The purpose of the present study was to review the rate of symptomatic VTE, determine patient and operative risk factors for VTE, and report on complications associated with VTE following shoulder arthroplasty. Methods: Over a 16-year period, 5,906 patients underwent primary anatomic total shoulder arthroplasty, reverse total shoulder arthroplasty, or hemiarthroplasty. Symptomatic VTE events were identified in 24 shoulders within 90 days of surgery. Patient records were reviewed for surgical indication, patient and operative risk factors, and management of VTE. Results: The rate of symptomatic VTE following shoulder arthroplasty was 0.41%. There were no deaths resulting from VTE events. Compared with patients who did not have VTE, those with symptomatic VTE events were found to be older (74.75 versus 68.51 years; p = 0.0028) and more likely to have had arthroplasty for a traumatic indication (3.31% versus 0.33%; p < 0.001). Age of >70 years and arthroplasty for a traumatic indication were found to be independent risk factors on multivariate nominal logistic regression analysis, whereas body mass index, sex, operative time, and type of arthroplasty performed were not found to be independent risk factors. There were 11 readmissions resulting directly from the VTE events, and patients diagnosed with VTE as inpatients had longer hospital stays than outpatients (13.71 versus 1.94 days; p = 0.0002). Conclusions: The risk of VTE following shoulder arthroplasty is low, and routine use of pharmacologic VTE prophylaxis may not be necessary. However, VTE complications can lead to substantial morbidity, longer hospital stays, readmission to the hospital, and further complications. Therefore, patients with multiple risk factors for VTE such as prior history of VTE, active malignancy, age of >70 years, or arthroplasty for traumatic indications should be considered for pharmacologic VTE prophylaxis.