Restoring Anatomical Features in Primary Total Knee Arthroplasty

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Rehabilitation Medicine

Background:

• Gonarthrosis prevalence is rising, necessitating effective treatments like total knee arthroplasty (TKA).
• While TKA improves pain and function, many active patients experience limitations in high-demand activities post-surgery.
• Modern TKA designs aim to replicate natural knee biomechanics, yet functional outcomes remain suboptimal for a significant patient cohort.

Purpose of the Study:

• To investigate the impact of femoral component alignment on postoperative outcomes in total knee arthroplasty.
• To explore how implant design and alignment influence knee kinematics, stability, and patellar tracking.
• To identify critical factors for achieving improved mobility and quadriceps efficiency after TKA.

Main Methods:

• Analysis of biomechanical principles governing knee joint function after TKA.
• Review of contemporary total knee arthroplasty implant designs and their kinematic characteristics.
• Examination of the relationship between femoral component positioning and functional recovery metrics.

Main Results:

• Suboptimal functional outcomes in TKA patients are linked to abnormal kinematics and implant instability.
• Proper axial plane alignment of the femoral component is critical for flexion stability, knee kinematics, and patellar tracking.
• Achieving ideal alignment influences postoperative mobility and quadriceps muscle efficiency.

Conclusions:

• Femoral component alignment is a pivotal factor in TKA success, directly impacting patient function.
• Addressing implant kinematics and stability through precise alignment can mitigate functional limitations.
• Optimizing TKA surgical technique, particularly component placement, is essential for enhancing patient recovery and activity levels.