The role of AIHIP in Preoperative Planning of Total Hip Arthroplasty to Different Surgeons.

Abstract

BackgroundPreoperative planning with computed tomography (CT)-based three-dimensional templating has been achieved more precise placement of hip components. This study investigated the value of the software for preoperative planning (artificial intelligence hip system, AIHIP) in primary total hip arthroplasty (THA) for surgeons with different experience levels.MethodsWe performed a retrospective study of 240 hips in 240 patients who underwent cementless primary THA. The patients were divided into four groups: A1) senior surgeon without AIHIP, A2) senior surgeon with AIHIP, B1) junior surgeon without AIHIP, and B2) junior surgeon with AIHIP. All preoperative planning evaluations were completed using the AIHIP software. We analysed the accuracy of stem size prediction and cup size prediction, the absolute value of postoperative discrepancy in leg length, discrepancy of neck-shaft angle and femoral offset between the healthy side and the affected side from the anteroposterior radiographic view of the hip, intraoperative and postoperative complications, operative times, the reduction in the haemoglobin (Hb) level during the first 24 hours and the number of intraoperative radiations.ResultsThe sizes of 95% were accurately estimated to be within one stem size, and 97% of the cup size estimates were accurate to within one cup size in group A2. A total of 87% were accurately estimated to be within one stem size, and 85% were accurate to within one cup size in group B2. There was a significant difference in radiological indicators (P<0.050), postoperative complications (overall P=0.035), operation duration (P<0.001), decrease in Hb per 24 hours (P=0.046) and intraoperative radiation frequency (P<0.050) among the patients in group B. There was also a significant difference in postoperative complications (overall P=0.01) between groups A1 and B1.ConclusionOur results suggest that the AIHIP is a favourable tool for young surgeons, and the accuracy is good.