Clinical trial · Interventional
A Randomized Controlled Study Evaluating Modified Cup Anteversion Placement in Prevention of Postoperative Dislocation in Patients Undergoing Acetabular Tumor Resection and Reconstruction
A Multi-center, Double-blinded, Randomized Controlled Study Comparing Modified Cup Anteversion vs Conventional Cup Anteversion Placement in Prevention of Postoperative Dislocation in Patients Undergoing Acetabular Tumor Resection and Reconstruction
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
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
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Periacetabular Tumor | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| conventional anteversion angle placement ( α±10°) | Behavioral | — | UNRESOLVED |
| modified anteversion angle placement(( α-15°)±10°) | Behavioral | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- modified anteversion angle placement (( α-15°)±10°) of the acetabular component
- description
- α refers to the anatomical 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
- interventionNames
- Behavioral: modified anteversion angle placement(( α-15°)±10°)
- type
- PLACEBO_COMPARATOR
- label
- conventional anteversion angle placement ( α±10°) of the acetabular component
- description
- α refers to the anatomical 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
- interventionNames
- Behavioral: conventional anteversion angle placement ( α±10°)
Primary outcomes (1)
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 16 Years
Show eligibility criteria text
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
References
Publications (0)
Data not yet available