Comparison Between the Onlay and Inlay Techniques for Patellar Resurfacing in Posterior Cruciate Ligament-Substituting Total Knee Arthroplasty

Navamindradhiraj University235 enrolled

Overview

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

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

235

Conditions

Onlay Patellar Resurfacing Technique Inlay Patellar Resurfacing Technique Patellar Resurfacing

Interventions

Total knee with onlay patellar resurfacing techniquePROCEDURE

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

Total knee with inlay patellar resurfacing techniquePROCEDURE

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

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria: * Primary osteoarthritis of knee who were scheduled for a primary total knee arthroplasty Exclusion Criteria: * Valgus deformity * History of inflammatory arthroplathy * Previous fracture or open surgery on the same knee * History of patellar instability

Locations (1)

Navamindradhiraj University

Dusit, Bangkok, Thailand

Outcomes

Primary Outcomes

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

Time frame: 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)

Time frame: 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)

Time frame: 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)

Time frame: 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)

Time frame: 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)

Time frame: Change from baseline Prevalence of anterior knee pain ,AKP 3 months, 6 months, and 12 months after surgery

Prevalence of patellar crepitus complication

Prevalence of patellar crepitus complication (present, absent)

Time frame: Change from baseline patellar crepitus complication 3 months, 6 months, and 12 months after surgery

Data from ClinicalTrials.gov

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