A Randomized Controlled Study Evaluating Modified Cup Anteversion Placement in Prevention of Postoperative Dislocation in Patients Undergoing Acetabular Tumor Resection and Reconstruction
NCT05593146
Summary
The purpose of this clinical study is to investigate whether patients who receive modified anteversion angle (( α-15°)±10°) of the acetabular cup have a lower risk of dislocation within one year after surgery, compared to patients who receive conventional anteversion angle ( α±10°) of the acetabular cup. The hypothesis is that patients with placement of the modified (( α-15°)±10°) anteversion angle of the acetabular component will have decreased risk of dislocation 1 year after surgery compared to patients with conventional anteversion angle ( α±10°) placement. PS: α refers to the preoperative anteversion angle of the affected hip. α equals to the anteversion angle of the contralateral limb if it cannot be accurately measured on the affected limb. A standard error within 10° is accepted
Eligibility
Inclusion Criteria: * Age above 16 years old, gender is not limited. * Tumor involving periacetabulum, femoral head, femoral neck or proximal femur * Patients require 3D-printed hemipelvic endoprosthetic reconstruction following periacetabular tumor resection * The subject has an estimated survival period of at least one year or more. * The subjects with informed consent Exclusion Criteria: * The patient used to conduct surgery on his/her hip joint * The patient's current surgery aimed for hip revision for implant failure or infection * The patient didn't conduct hip endoprosthetic reconstruction * Patients with congenital defects in the gluteal muscle group, neurological function or pelvic tilt deformity severe enough to affect functional activity * Patients cannot self-assess postoperative function after surgery * According to the judgment of the investigator/supervisor, there may be difficulties in completing postoperative follow-up * Subjects have participated in similar research projects
Conditions2
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NCT05593146