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The purpose of this study is to compare clinical outcome in posterior cruciate ligament-substituting total knee arthroplasty with onlay patellar resurfacing technique and inlay patellar resurfacing technique
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Onlay patellar resurfacing technique | Active Comparator |
| |
| Inlay patellar resurfacing technique | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Total knee with onlay patellar resurfacing technique | Procedure | The patellar resurfacing technique that the patellar implant is embedded on the patellar bone.The patellar implant is placed on top of a flat tibial osteotomy or cut-surfaced bone |
| Measure | Description | Time Frame |
|---|---|---|
| Change of post-operative anterior knee pain | Visual Analog Scale for anterior knee pain (minimum 0, maximum 10) Do higher values represent a worse outcome | Change from baseline Visual Analog Scale for anterior knee pain at 3 months, 6 months, and 12 months after surgery |
| range of motion of knee | Knee Society and Knee Society function score (minimum 0, maximum 200) | Change from baseline Knee Society and Knee Society function score at 3 months, 6 months, and 12 months after surgery |
| Knee Society and Knee Society function score | Knee Society and Knee Society function score (minimum 0, maximum 200) | Change from baseline Knee Society and Knee Society function score at 3 months, 6 months, and 12 months after surgery |
| New patellar score | New patellar score (minimum 0, maximum 30) | Change from baseline new patellar score at 3 months, 6 months, and 12 months after surgery |
| Oxford knee score | Oxford knee score (minimum 0, maximum 48) | Change from baseline Oxford knee score 3 months, 6 months, and 12 months after surgery |
| Prevalence of anterior knee pain ,AKP | Prevalence of anterior knee pain ,AKP (minimum 0, maximum 10) | Change from baseline Prevalence of anterior knee pain ,AKP 3 months, 6 months, and 12 months after surgery |
| Prevalence of patellar crepitus complication |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Satit Thiengwittayaporn, M.D. | Department of Orthopaedics, Faculty of Medicine Vajira Hospital, Navamindradhiraj University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Navamindradhiraj University | Dusit | Bangkok | 10300 | Thailand |
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| Total knee with inlay patellar resurfacing technique | Procedure | The patellar resurfacing technique that the patellar implant is embedded in the patellar bone.The patellar implant is surrounded by a rim of cortical bone and supported by hardened, sclerotic bone |
|
Prevalence of patellar crepitus complication (present, absent) |
| Change from baseline patellar crepitus complication 3 months, 6 months, and 12 months after surgery |