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Published on: February 27, 2018
Component alignment in revision total knee arthroplasty using diaphyseal engaging modular offset press-fit stems
Cass K Nakasone1, Ayesha Abdeen, Armond G Khachatourians
1Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Health Consultation Center II, Los Angeles, California 90033, USA.
The Journal of Arthroplasty
|June 7, 2008
Summary
Revision total knee arthroplasty using diaphyseal-engaging stems showed a trend toward improved component alignment. These uncemented stems may help achieve better positioning in complex revision surgeries.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Radiographic Analysis
Background:
- Revision total knee arthroplasty (TKA) presents challenges in achieving optimal component alignment.
- Diaphyseal-engaging, press-fit modular stems offer a potential solution for complex cases.
Purpose of the Study:
- To evaluate the radiographic alignment of femoral and tibial components in revision TKA using diaphyseal-engaging stems.
- To correlate canal fill with the anatomic alignment of these components.
Main Methods:
- Retrospective review of 52 consecutive revision TKA cases.
- Measurement of femoral and tibial component alignment preoperatively and postoperatively.
- Assessment of canal-filling ratio and its correlation with anatomic alignment.
Main Results:
- A trend toward improved femoral and tibial component alignment was observed with increasing canal fill.
- Diaphyseal-engaging press-fit modular stems demonstrated potential for facilitating accurate component positioning.
Conclusions:
- Uncemented diaphyseal-engaging press-fit modular stems may aid in achieving accurate femoral and tibial component alignment during revision TKA.
- Canal fill is a potentially important factor in optimizing component positioning in revision knee surgery.