Surgical technique
pulmonary embolism, postoperative pain, bleeding, Pain, fracture, Thrombosis, pain, DVT, cement mantle measurementsIn this study, PJI, patellar componentThe cementation, bipolar coagulation
PULMONARY EMBOLISM, BLEEDING, DELAYED WOUND HEALING, THROMBOSIS, JOINT INFECTION, EXSANGUINATION, DVT
All procedures were strictly standardized in accordance with preoperative tranexamic acid (TXA), general anesthesia, postoperative pain management, and rehabilitation regimen. Prior to surgery and immediately before skin incision, TXA (1 g) and cefuroxime (1.5 g) were administered intravenously. Following joint capsule suturing, an intra-articular injection of TXA (2 g) was given. Moreover, TXA (0.5 g) was given 3 and 6 h postoperatively, with two doses of cefuroxime (1.5 g) administered within 24 h postoperatively. Thrombosis prophylaxis was achieved using low-molecular-weight heparin calcium (40AXaIU/kg per day) during hospitalization. Both groups underwent appropriate thigh tourniquet application, limb exsanguination through elevation for 2 min, and cuff inflation to 250 mmHg just prior to skin incision.Knee implants were utilized in the experiment where the PEEK group consisted of the post-stabilized fixed-bearing knee from Suzhou SinoMed Biomaterials Co., Ltd. in Jiangsu, China (Fig. The complete peek knee system, including femoral component, tibial component, polyethylene liner, and patellar componentThe cementation was performed in two stages, with the tibia being implanted first, followed by fixation of the femoral component using another batch of cement. This approach allowed for adequate time to achieve meticulous cementation with proper pressurization. Following cementation, further pulse lavage debridement was carried out to eliminate cement debris from the wound. Upon closure of the joint capsule, the cuff was deflated and bipolar coagulation was utilized to halt bleeding in the subcutaneous vessels. Postoperative rehabilitation and pain management were standardized for both groups and adhered to a uniform protocol that included full weight-bearing.The depth of the cement penetration was assessed using the method described by Pfitzner et al. [Anteroposterior and lateral radiographs with six zone cement mantle measurementsIn this study, the postoperative knee score was assessed by the use of Knee Society Score (KSS), which includes both knee clinical score and functional score, and survivorship at 1 year after surgery. Pain intensity was measured using the visual analogue scale (VAS) on a scale ranging from 0 to 10, both pre-operatively and at 1 year postoperatively during full weight-bearing mobilization of the patients. Any incidences of postoperative delayed wound healing, periprosthetic joint infection (PJI), pulmonary embolism (PE), DVT, periprosthetic joint fracture (PJF), and radiolucent lines (RLLs) was recorded and analyzed.