Khalifa Ahmed A, Abdelnasser Mohammad K, Ahmed Ahmed M, Shetty Gautam M, Abdelaal Ahmed M
Orthopaedic Department, Qena Faculty of Medicine and University Hospital, South Valley University, Qena, Egypt.
Orthopaedic and Traumatology Department, Assiut University Hospital, Assiut, Egypt.
Arch Bone Jt Surg. 2022 Mar;10(3):278-285. doi: 10.22038/ABJS.2021.52402.2587.
Dislocation after total hip arthroplasty (THA) partly under the surgeon's control, by appropriate placement of the components. We aimed in this study to determine the accuracy of using intra-operative smartphone applications (Apps) to place the acetabular cup within the safe abduction angle by less experienced surgeons during THA surgery when compared to the conventional freehand technique for cup placement.
Sixty primary THAs were performed, 30 using the conventional freehand technique (control group) and 30 using the smartphone app technique (study group) to determine the acetabular cup abduction angle by the same young surgeon with less than one year of experience. Postoperative mean cup abduction angle, mean cup anteversion angle, and the percentage of cups within the safe abduction zone as measured on radiographs were compared between the two groups.
In the study group, the mean cup abduction angle was significantly lower (), and the acetabular cup was placed within the safe zone in a significantly higher () percentage of patients (93% vs 63%) when compared to the control group. However, there was no significant difference () between the two groups when the mean cup anteversion angle was compared.
The smartphone app technique may help achieve an accurate acetabular cup abduction angle and a higher percentage of cups placed within the safe zone of abduction by a less experienced surgeon when compared to the conventional freehand technique. Using tools such as the smartphone app to measure the acetabular cup position can reduce intraoperative errors by young and less experienced surgeons during THA surgery.
全髋关节置换术（THA）后脱位部分受外科医生控制，可通过适当放置假体组件来实现。本研究旨在确定与传统徒手放置髋臼杯技术相比，经验不足的外科医生在THA手术中使用术中智能手机应用程序（Apps）将髋臼杯放置在安全外展角度内的准确性。
进行了60例初次THA手术，30例采用传统徒手技术（对照组），30例采用智能手机应用程序技术（研究组），由同一位经验不足一年的年轻外科医生确定髋臼杯外展角度。比较两组术后X线片测量的髋臼杯平均外展角度、平均前倾角以及髋臼杯位于安全外展区内的百分比。
与对照组相比，研究组髋臼杯平均外展角度显著更低（），且髋臼杯位于安全区内的患者百分比显著更高（）（93%对63%）。然而，比较两组髋臼杯平均前倾角时，差异无统计学意义（）。
与传统徒手技术相比，智能手机应用程序技术可能有助于经验不足的外科医生实现准确的髋臼杯外展角度，并使更高比例的髋臼杯放置在安全外展区内。使用智能手机应用程序等工具测量髋臼杯位置可减少年轻且经验不足的外科医生在THA手术中的术中误差。
