Pelvic Tumor
Conditions
Keywords
Pelvic tumor, Acetabular reconstruction, Navigation template, Hip rotation center, Placement in situ
Brief summary
Background: Acetabular reconstruction in situ after extensive pelvic resection is technically challenging because the significant loss of bone stock and bony landmarks. The aim of the present study was to investigate the feasibility of an individualized navigation template for acetabular reconstruction following pelvic malignancy resection. Methods: This retrospective cohort study included patients who underwent type II or II+III pelvic tumor resection and reconstruction using a modular hemipelvic prosthesis. In the template-guided group (n = 10), a navigation template was designed and applied to assist acetabular reconstruction. In the traditional operation group (n = 14), the patients underwent the same surgery but without the navigation template. To compare the displacement of the hip rotation center before and after surgery between the two groups, an innovative method based on pelvic CT was developed and a validation group of cases was used to assess the effectiveness of this measurement approach. In the validation group (n = 12), patients undergoing periacetabular puncture or curettage without hip joint reconstruction were included. The displacements for the validation group were calculated and compared with 0 cm, the theoretical value. Subsequently, the displacements between the template-guided group and the traditional operation group were compared.
Interventions
DEVICEAcetabular reconstruction after tumor resection.
In the template-guided group (n = 10), a navigation template was designed and applied to assist acetabular reconstruction. In the traditional operation group (n = 14), the patients underwent the same surgery but without the navigation template. To compare the displacement of the hip rotation center before and after surgery between the two groups, an innovative method based on pelvic CT was developed and a validation group of cases was used to assess the effectiveness of this measurement approach. In the validation group (n = 12), patients undergoing periacetabular puncture or curettage without hip joint reconstruction were included. The displacements for the validation group were calculated and compared with 0 cm, the theoretical value. Subsequently, the displacements between the template-guided group and the traditional operation group were compared.
Sponsors
Second Affiliated Hospital, School of Medicine, Zhejiang University
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Intervention model description
This study is a Retrospective Cohort Study through retrospectively collecting patients undergoing acetabulum reconstruction after pelvic tumor resection. The patients were interfered with or without the acetabular navigation template during the hip reconstruction process.
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
1. All the patients diagnosed with a pelvic tumor； 2. Underwent limb salvage surgery following type II or II+III pelvic resection； 3. Acetabulum reconstruction using a modular, titanium hemipelvic prosthesis.
Exclusion criteria
1. A lack of postoperative CT images; 2. Having undergone revision surgery or noninitial/primary resection; 3. unable to calculate the hip displacement by the specific measurement method we proposed.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Compare the change of acetabular rotation center before and after surgery between the template-guided group and the traditional operation group. | through study completion, an average of 2 years | Compare the change of acetabular rotation center (the displacement displayed in centimeters) before and after surgery between the template-guided group and the traditional operation group based on preoperative and postoperative CT images. |
Outcome results
None listed