Comparative Effect of Mechanical and Functional Alignment in Bilateral Total Knee Arthroplasty on Ankle Alignment

Department of Medical Services Ministry of Public Health of Thailand20 enrolled

Overview

Mechanical alignment (MA) in total knee arthroplasty (TKA) is the most commonly used with well-documented long-term results, however 20% of patients express dissatisfaction following primary TKA. Alternative alignment philosophies have been proposed, aiming to improve patient clinical outcomes and satisfaction. However, evaluation is focused mainly on knee alignment, the pathological findings and other adaptational changes in the ankles and hips are usually neglected. Thia study aim to comparative effect between mechanical and functional alignment in patient undergone bilateral robotic TKA on ankle alignment and functional outcomes.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

Conditions

Arthropathy of Knee

Interventions

Eligibility

Sex: ALLMin age: 20 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Age 20-80 years * Symptomatic bilateral knee Osteoarthritis requiring primary TKA * Willing to undergo bilateral simultaneous TKA * Able to give informed consent Exclusion Criteria: * ligament deficiency requiring constrained prosthesis * bone loss with augmentation need * history of fracture around knee or previous osteotomy * history of ankle fracture * patient with neuromuscular disorder or movement disorder * patient is unable to attend the study follow-up program

Outcomes

Primary Outcomes

Radiographic outcomes : Hip-knee-ankle angle

angle in degree between line from center of head of Femur to intercondylar notch and line from tibial interspinous to center of tibial plafond