Purpose This study aimed to investigate the influence of proximal femoral anatomical parameters on coronal varus alignment of cementless femoral stems in total hip arthroplasty (THA) and to determine predictive thresholds. Methods A retrospective analysis of 315 primary THA cases (2022–2024) receiving a cementless stem (Polarstem) via an anterolateral approach was conducted. Preoperative pelvic radiographs were used to measure...

When ships conduct offshore operations in the ocean, they are subject to disturbances from natural factors such as sea breezes and waves. These disturbances lead to movements detrimental to the ship’s stability, especially heave movement in the vertical direction, which profoundly impacts the safety of shipboard facilities and staff. To counter this, the active wave compensation device is widely used on ships to maintain the s...