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Introduction: The three-column concept has been proposed as tool in surgical decision making for treating tibial plateau fractures. Recent studies have underscored the negative effect of posterior column tibial plateau fractures on clinical outcome. The purpose of this study was to assess the value of the three column concept and posterior plating in posterior column fractures. We hypothesized that treating patients according to the three-column concept improves functional outcome. Methods: 111 consecutive tibial plateau fractures, treated between January 2009 and December 2016, with at least a posterior column fracture were included. Relevant demographic and treatment variables were studied. Applied treatment was retrospectively evaluated according to the threecolumn concept. Patient reported outcome was assessed using the Knee injury and Osteoarthritis Outcome Score (KOOS). Results: Median follow-up was 43.1 months (IQR 29.0-63.3) with a response rate of 80,2%. Outcomescores were markedly lower compared to the general population. 22.5% patients were treated according to the three-column concept and 27% was treated with posterior plating. Predominantly combined fractures of posterior and lateral columns were treated without fixation of the posterior column. Neither treatment according to the three-column concept and/or with posterior plating were found to significantly influence outcome. Conclusions: The outcome of posterior column fractures was equal, regardless of whether these fractures were treated or not. This indicates that the three-column concept seems insufficient and gives rise to further debate on surgical strategies of posterior column fractures. The implementation of trauma mechanism based fracture morphology in the threecolumn concept might be important in order to consummate the three-column concept as guiding tool.

Purpose Tibial plateau fractures with the involvement of the posterior column are an important prognostic factor towards poor functional outcome. We aimed to assess the sporting abilities postoperatively with special emphasis on the type of sports and sport-specific movements, as well as time needed to resume sports, restricting factors in sports engagement, and patient satisfaction. We aimed to provide prognostic information on return to sports. Methods Demographic, clinical and radiological variables were retrospectively collected from 82 multicentric patients between 2014 and 2016. Prospectively, sporting abilities before and after surgery were determined using questionnaires at a mean follow-up of 33 months postoperatively. Results Involvement in sports significantly decreased, with only 68.4% of patients resuming sports (p < 0.001). The mean time needed to partially or fully resume sports was 6-9 and 9-12 months, respectively. The ability to resume at the pre-injury level of effort and performance was 22% and 12%, respectively. Restricting factors were pain (66%), fear of re-injury (37%), limited range of motion (26%), and instability (21%). The majority (59%) of patients were unsatisfied with their physical abilities. Significantly worse outcomes were observed in patients playing high-impact sports, experiencing knee pain during physical activity, suffering from extension/valgus or flexion/varus trauma. Conclusions Tibial plateau fractures with the involvement of the posterior column significantly hamper the patients' sporting abilities, leaving the majority of patients unsatisfied. Preoperative counseling about prognosis, setting realistic expectations, optimizing rehabilitation and pain management postoperatively, and advising low-impact sports might improve engagement in physical activities and emotional impact on patients. Level of evidence 3.