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A Novel Technique for Restricted Kinematic Alignment Total Knee Arthroplasty Without Computer-Assisted Devices
Yuzuru Sakakibara1,2, Yusuke Yasutani1, Akimitsu Oyama1
1Orthopedic Surgery, Muroran City General Hospital, Muroran, JPN.
Cureus
|September 20, 2024
Summary
This study presents a new, non-computer-assisted surgical device and technique for restricted kinematic-alignment total knee arthroplasty (rKA-TKA). This innovation allows for precise alignment restoration in complex knee anatomies, improving accessibility and reducing costs.
Area of Science:
- Orthopedic surgery
- Biomechanical engineering
- Surgical innovation
Background:
- Kinematic-alignment total knee arthroplasty (KA-TKA) aims to restore natural limb alignment.
- Restricted KA-TKA (rKA-TKA) addresses complex knee anatomies within safe boundaries.
- Computer-assisted surgery (CAS) is often used but has limitations.
Purpose of the Study:
- Introduce a novel device and technique for rKA-TKA.
- Enable rKA-TKA without CAS.
- Facilitate accurate restoration of natural knee anatomy and alignment.
Main Methods:
- A new device for precise cartilage thickness measurement and osteotomy angle adjustment.
- A heel-lift technique for reproducible tibial osteotomy volume and angle determination.
- Implementation of a non-CAS approach for rKA-TKA.
Main Results:
- The novel device and technique enable precise execution of rKA-TKA.
- Accurate restoration of alignment and joint line obliquity is achievable.
- The method bypasses the need for CAS, enhancing accessibility.
Conclusions:
- The developed device and technique offer a feasible solution for rKA-TKA.
- This approach democratizes advanced TKA techniques by removing CAS dependency.
- Improved patient outcomes through precise anatomical restoration are anticipated.
