Osteo Arthritis
Conditions
Keywords
total hip arthroplasty, bone metabolism, mineralisation
Brief summary
What is the intensity of F-PET uptake in healthy and osteo arthritic femur and acetabulum, compared to the uptake adjacent to four analyzed endoprosthetic components 1½ and 6 months after surgery?
Detailed description
A clinical study of 26 patients, age 50-69 years, healthy unless osteoarthritis in one hip, randomized in four groups plus a reference group of same 26 patient´s contralateral healthy hip. Intervention will be surgery with a total hip arthroplasty. The studied endoprosthetic components are: Cemented Lubinus SP II stem with a ceramic 32 mm head, a cemented Lubinus cross linked cup (Waldemar Link, Hamburg, Germany). Palacose cement with gentamycin, applied with 3:rd generation cementation technique will be used for those cemented implants. Uncemented HA-coated Corail stem with a ceramic 32 mm head (DePuy, Johnson & Johnson, USA), a fibrous metal Regenerex RingLoc cup (Biomet, Warsaw, Il, USA) All cups will have cross linked Ultra-high-molecular-weight polyethylene (UHWMP). Clinical score, radiography and PET uptake of Fluoride tracer (SUV) adjacent to the prosthetic surfaces will be analyzed.
Interventions
DEVICEComponent for acetabulum (Regenerex RingLoc cup)
A fibrous metal uncemented Regenerex RingLoc cup (Biomet, Warsaw, Il, USA)
DEVICEComponents for the acetabulum (Lubinus cross linked cup)
cemented Lubinus cross linked cup (Waldemar Link, Hamburg, Germany).
DEVICEArthroplasty components are for the femur (Cemented Lubinus SP II stem)
Cemented Lubinus SP II stem (Waldemar Link, Hamburg, Germany) with a ceramic 32 mm head.
DEVICEArthroplasty components are for the femur (Corail stem)
Uncemented HA-coated Corail stem with a ceramic 32 mm head (DePuy, Johnsson & Johnsson, USA).
Sponsors
Uppsala University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
50 Years to 69 Years
Healthy volunteers
No
Inclusion criteria
* patients diagnosed to have unilateral hip osteo arthritis (Charnley group A) aimed for THA at the orthopedic clinic Gävle hospital.
Exclusion criteria
* Systemic disease or medication affecting the skeleton
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| FEMUR: to analyze difference in SUV of the 4 upper ROI's (No 1, 7, 8 and 13) analyzed together between the cemented and uncemented groups AND: to analyze SUV of the 4 upper ROI's analyzed together between each femur study group and the reference group | 6 weeks after surgery | There are two study groups for femur: cemented and uncemented femur prosthetic components. There are also a femur reference group. |
| ACETABULUM: to analyze difference in SUV of all 9 ROI's analyzed together between the cemented and uncemented acetabular study groups, and to analyze SUV of all 9 ROI's analyzed together between each acetabulum study group and the reference group | 6 weeks after surgery | There are two study groups for acetabulum: cemented and uncemented acetabular prosthetic components. There are also an acetabular reference group. |
Secondary
| Measure | Time frame |
|---|---|
| FEMUR:to analyze difference in SUV for each individual ROI between the 3 time points for the cemented group. To analyze difference in SUV for each individual ROI between the 3 time points for the uncemented group. | preoperatively, 6 weeks and 6 months |
| FEMUR:to analyze difference in SUV for the 4 upper ROI's (No 1, 7, 8 and 13)analyzed together between the 2 study groups | 6 months |
| FEMUR:to analyze difference in SUV for the 4 upper ROI's analyzed together between each study group and the reference group | 6 months |
| ACETABULUM: to analyze difference in SUV for each individual ROI between the 2 study groups | 6 weeks and 6 months |
| FEMUR:to analyze difference in SUV for each individual ROI inbetween the cemented and uncemented femur group | 6 weeks and 6 months |
| ACETABULUM: to analyze difference in SUV for each individual ROI for the cemented study group between the 3 time points. To analyze difference in SUV for each individual ROI for the uncemented study group between the 3 time points. | preoperatively, 6 weeks and 6 months |
| ACETABULUM: to analyze difference in SUV of all 9 ROI's analyzed together between the cemented and uncemented acetabular study groups | 6 months |
| ACETABULUM: to analyze difference in SUV of all 9 ROI's analyzed together between the cemented and uncemented acetabular study groups, and to analyze SUV of all 9 ROI's analyzed together between each acetabulum study group and the reference group | 6 months |
| ACETABULUM: to analyze difference in SUV for each individual ROI between the cemented study group and the reference group. To analyze difference in SUV for each individual ROI between the uncemented study group and the reference group. | 6 weeks and 6 months |
| FEMUR: to analyze difference in SUV for each individual ROI between the cemented study group and the reference group. To analyze difference in SUV for each individual ROI between the uncemented study group and the reference group. | 6 weks and 6 months |
Countries
Sweden
Contacts
Primary ContactGösta Ullmark, MD, PhD
Outcome results
None listed