Complications after surgery for metastatic humeral lesions.

Abstract

Knowledge of surgical outcome and its predictors helps inform patients and aids in surgical decision-making. We aimed to assess the outcome-reoperation and systemic complication rate-of surgery for humeral metastases, myeloma, or lymphoma. Our null hypothesis was that there are no factors associated with these outcomes. We included 295 consecutive patients in this retrospective study: 134 (45%) proximal, 131 (44%) diaphyseal, and 30 (10%) distal impending or pathologic fractures. Proximal lesions were treated by intramedullary nailing (43%, n = 57), prosthesis (34%, n = 46), plate-screw fixation (22%, n = 30), and a combination (n = 1). Diaphyseal lesions were treated by intramedullary nailing (69%, n = 91), plate-screw fixation (30%, n = 39), and a combination (n = 1). Distal lesions were treated by plate-screw fixation (97%, n = 29) and intramedullary nailing (3.3%, n = 1). We found 25 (8.5%) reoperations, and 17 (5.8%) patients had 18 systemic complications: pneumonia (3.7%, n = 11), pulmonary embolism (1.3%, n = 4), sepsis (0.68%, n = 2), and fat embolism (0.34%, n = 1). No factors were independently associated with reoperation. Logistic regression analysis demonstrated that favorable cancer status (i.e., a higher modified Bauer score: odds ratio, 0.48; 95% confidence interval, 0.29-0.80; P = .005) was independently associated with a decreased systemic complication rate. Poor cancer status was an independent predictor of postoperative systemic complications. This could help inform the patient and anticipate postoperative problems.