Abstract: Objective To investigate the clinical effect of limited lined hip prosthesis in the elderly patients with femoral neck fracture of hemiplegic side. Methods A total of 16 elderly patients suffering from femoral neck fracture of hemiplegic side from 2018 to 2020 in our hospital were enrolled. Pinnacle ES limited lined total hip prosthesis was used for total hip replacement in all patients. The hip function was evaluated by Harris hip score, and the severity of hemiplegic side motor disorder was evaluated by Fugl-Meyer Assessment Scale (FMA), and the hemiplegic lower limb function was evaluated by Brunnstrom staging. The complications during follow-up were recorded. Results The average operation time was 54.7±8.3 min and the average intraoperative bleeding was 198.3±41.6 mL. The average follow-up time was 15.7±3.1 months. The Harris hip score at the last follow-up was significantly higher than that before operation (88.1±8.7 vs 17.4±2.6, P <0.05). The excellent and good rate of hip function was 93.75%. The FMA score at the last follow-up was significantly higher, and the motor function stage of Brunnstrom was significantly higher (P<0.001) than those before operation. During the follow-up, osteolysis, prosthesis loosening, sinking and periprosthetic fractures were not found. Popliteal vein thrombosis occurred in one patient (6.25%). Conclusions The treatment of limited lined hip prosthesis for femoral neck fracture in the elderly with hemiplegia can effectively improve the function of hip joint and hemiplegic side limb, and can reduce the postoperative dislocation rate of prosthesis.

Key words: hemiplegia, femoral neck fracture, dislocation, hip replacement, restrictive lining