Jordy van Sambeeck

Complications of a self-centering sliding tibial tubercle osteotomy for patellofemoral complaints 3 51 Wound infection was more common in patients who had previous surgery performed (P < 0.05). Two patients had a venous thrombo-embolism (VTE), they were treated with a direct oral anticoagulant for three months. There were no minor complications specifically related to the TTO. Screws were removed after consolidation of the osteotomy in 47% of the cases. Indications for screw removal were compression pain at the screws or at patient demand. Screws were removed more often in female than in male patients (53% vs. 29% respectively, odds ratio 2.69, P < 0.05) and in patients with patellofemoral pain prior to surgery (54% vs. 28%, P < 0.05). Nine patients had a reduced ROM requiring manipulation under anesthesia. Results N Major complication Nonunion 3 Fracture 2 Deep infection 2 Wound complications 2 Minor complication Superficial infection 5 Tromboembolic event 2 Table 2. Number of complications a. b. c. Figure 2a-c Conventional radiographs of a patient who sustained a tibial fracture: a. preoperative X-ray where a drill hole of a screw of a prior tibial tubercle osteotomy can be seen (arrow). b. fracture at the site of the drill hole. c. postoperative X-ray after treatment of the fracture with internal plate fixation