Transosseous Suture With an All-FiberWire Technique in Patellar Fracture Fixation

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Abstract
Background: Patellar fractures account for 0.5% to 1.5% of all bone fractures. Tension band wiring with heavy gauge steel wire and K-wires is traditionally procedure for treating patellar fractures. However, this method is associated with implant-related complications. Present study aimed to evaluate functional clinical outcomes of patellar fracture fixation with transosseous suture using an all-FiberWire technique. Methods: This was a retrospective study involving 16 patellar fractures patients were repaired by open reduction and internal fixation with FiberWire using a 3-transosseous tunnel technique. The functional outcomes were evaluated with Tegner-Lysholm and Bostman scoring. We also evaluated clinical and radiologic outcomes. Results: The mean time to bony union was 8.87±1.54 weeks (range, 7 to 12 wk). The mean Bostman score at final follow-up was 27.13±2.5 (range, 21 to 30), and mean Lysholm score at final follow-up was 90.69±5.75 (range, 83 to 100). Fractures healed in all patients, with no fixation failures. Minor loss of reduction (<2 mm) were observed in 3 patients (18.75%). No patient has reoperation. One patient developed knee stiffness, with an infected hematoma 10 weeks postoperatively. None of patients developed anterior knee pain postoperatively. Two patients (12.5%) developed mild localized pain from prominent suture knots. There were no significant implant-related complications and no repeat surgery was necessary. Conclusions: The use of nonmetallic sutures with an all-FiberWire technique in patellar fracture fixation avoids implant-associated complications and possibility of a second surgery to remove metal implants. Nonmetallic high-resistance FiberWire matches traditional metallic fixation, with a reduced risk of postoperative complications. Level of Evidence: Level IV (therapeutic).

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