ABSTRACT
Objective:To evaluate the clinical efficacy of minimally invasive treatment of Fraser type Ⅱ floating knee by homeopathic reduction.Methods:From November 2016 to July 2018, 7 patients with Fraser type Ⅱ floating knee were treated by homeopathic reduction and minimally invasive surgery at Trauma Emergency Center, The Third Hospital of Hebei Medical University. They were 5 males and 2 females, aged from 30 to 82 years (average, 52 years). They all suffered from tibial plateau fracture complicated with floating knee, with 5 cases of Fraser type ⅡA (tibial plateau fracture complicated with femoral shaft fracture) and 2 cases of Fraser type ⅡC (tibial plateau fracture complicated with femoral condyle fracture). The femoral and tibial plateau fractures were reduced with a bidirectional traction reduction device, followed by minimally invasive implantation of internal fixators. The operation time, length of a single incision, blood loss and fluoroscopic frequency were recorded. The anteroposterior and lateral X-ray films of the lower limb were taken and fracture healing time was recorded during follow-up. The function of knee joint was evaluated by Hospital for Special Surgery (HSS) scoring system at the last follow-up.Results:For the 7 patients, operation time averaged 87.2 min, length of a single incision 2.8 cm, blood loss 471 mL, and fluoroscopy frequency 37 times. The postoperative X-ray films showed fine alignment and force line and smooth articular surface in all patients. All the incisions healed by grade A. The follow-up time for 7 patients ranged from 12 to 21 months (average, 15.6 months). All the fractures healed after an average time of 12.8 weeks. The HSS scores at the last follow-up showed that 6 cases were excellent and one was good.Conclusion:The fractures of the femur side and of the tibia side can be treated separately by closed reduction and internal fixation using a homeopathic bidirectional traction reduction device so as to obtain better knee joint function.