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In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
Published on: May 5, 2023
957
Handheld, accelerometer-based navigation versus conventional instrumentation in total knee arthroplasty: a
Zaid Shihab1, Catriona Clayworth1, Naveen Nara1,2,3
1Department of Orthopaedics, Ballarat Health Services, Ballarat, Victoria, Australia.
ANZ Journal of Surgery
|June 2, 2020
Summary
Accelerometer-based navigation (ABN) improves precision in total knee arthroplasty compared to conventional methods. This advanced technique enhances alignment accuracy without compromising procedural or functional outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Surgical Navigation
Background:
- Accurate alignment in total knee arthroplasty (TKA) is crucial for implant survivorship and patient function.
- Existing navigation techniques include conventional instrumentation (CONV), patient-specific instrumentation (PSI), and computer-assisted surgery (CAS).
- Accelerometer-based navigation (ABN) offers a potentially more precise alignment method.
Purpose of the Study:
- To compare the accuracy of accelerometer-based navigation (ABN) against conventional instrumentation (CONV), patient-specific instrumentation (PSI), and computer-assisted surgery (CAS) in TKA.
- To evaluate the impact of ABN on the restoration of the mechanical axis in TKA.
- To assess differences in procedural and functional outcomes between ABN and other navigation methods.
Main Methods:
- A systematic literature search was conducted across MEDLINE, EMBASE, and Cochrane databases up to August 15, 2018.
- A random-effects meta-analysis was performed to pool odds ratios for outliers exceeding 3° in key coronal and sagittal angles.
- Included outcomes were angular outliers, procedural characteristics, and functional results.
Main Results:
- Thirteen studies with 1566 patients were analyzed, comparing ABN to CONV, CAS, and PSI.
- ABN demonstrated significantly lower outliers (>3°) from the mechanical axis for hip-knee-ankle and coronal femoral angles compared to CONV.
- No significant differences in outliers were found for other angles or when comparing ABN to CAS/PSI. Procedural and functional outcomes showed no statistically significant differences.
Conclusions:
- Accelerometer-based navigation (ABN) is an effective method for enhancing precision and accuracy in restoring the mechanical axis during total knee arthroplasty.
- The use of ABN in TKA does not lead to significant compromises in procedural efficiency or patient functional outcomes.
- ABN represents a valuable advancement in TKA alignment techniques, potentially improving long-term results.
