Risk factors for mechanical complications following spondylectomy of thoracolumbar primary spinal column tumors.

Objective: The purpose of this study was to identify risk factors for mechanical complications following complex spinal reconstruction for spondylectomy of primary spinal column tumors.

Methods: A retrospective chart review identified patients treated with spondylectomy for primary spinal column tumors in the thoracic or lumbar spine followed by posterior instrumentation and anterior column reconstruction. Variables collected included basic demographics, smoking status, chronic steroid use, frailty (Charlson Comorbidity Index), extent of resection, Weinstein-Boriani-Biagini classification, tumor volume, Spine Instability Neoplastic Score, anterior column reconstruction and fixation techniques, rod characteristics, Hounsfield units (HUs), and neoadjuvant/adjuvant chemoradiation.

Secondary Infection of Adverse Local Tissue Reaction Leading to Amputation in a Patient With a Modular Knee Endoprosthesis.

Three years after endoprosthetic reconstruction of the proximal tibia, a patient presented with a skin ulceration near the surgical site. The knee was not clinically infected, but the patient had elevated serum cobalt levels. Dermatological evaluation diagnosed a friction ulcer.