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Original Articles
- Risk Factors of Periprosthetic Fracture after Total Knee Arthroplasty
- Ju Young Shin, Hyung Jun Kim, Seung Han Cha, Dong Heon Kim
- J Korean Fract Soc 2012;25(1):1-7. Published online January 31, 2012
- DOI: https://doi.org/10.12671/jkfs.2012.25.1.1
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Abstract
PDF - PURPOSE
To evaluate the incidence rate and risk factors for periprosthetic fracture after total knee replacement (TKR).
MATERIALS AND METHODS
We carried out a retrospective case-control study of 596 patients (951 knees) who underwent TKR between 1999 and 2006 and who were followed up over 36 months. We classified patients into group I (study group) and group II (control group). We subdivided risk factors as pre-operative, intra-operative, and post-operative factors. Age, osteoporosis, revision arthroplasty, CVA, and alcohol dependence were categorized as pre-operative factors; anterior femoral notching and prosthetic types (mobile, fixed, and load-bearing) were considered intra-operative factors; and post-operative activity level was classified as a post-operative factor. We obtained information from the patients' charts, X-ray film, and telephone interviews.
RESULTS
The overall incidence rate was 2.25%; 3 patients were male, and 18 were female (14.28% and 85.72%, respectively). Old age (p<0.01, odds ratio=1.14), osteoporosis (p=0.01, odds ratio=4.74), revision arthroplasty (p=0.01, odds ratio=7.46), CVA (p=0.02, odds ratio=8.55), and alcohol dependence (p=0.03, odds ratio=44.54) were statistically significant among the pre-operative factors. Among the intra-operative factors, anterior femoral notching (p<0.01, odds ratio=11.74) was significant, and continued heavy labor (p<0.01, odds ratio=8.14) was significant among the post-operative factors.
CONCLUSION
We concluded that old age, osteoporosis, revision arthroplasty, comorbidity related with falling down, anterior femoral notching, and continued heavy labor were associated with periprosthetic fracture after TKR.
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- Retrograde Nailing for Supracondylar Fracture after Total Knee Replacement: The Compatibility of Femoral Implant with Supracondylar Nail
- Moon Jib Yoo, You Jin Kim, Jin Won Lee
- J Korean Fract Soc 2008;21(1):19-23. Published online January 31, 2008
- DOI: https://doi.org/10.12671/jkfs.2008.21.1.19
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Abstract
PDF
- PURPOSE
Retrograde intrameullary nail is one of the treatment of periprosthetic supracondylar femoral fracture after total knee replacement (TKR), but all TKRs will not permit to insert a supracondylar nail. Therefore, we have investigated the compatibility of the TKRs with supracondylar nail.
MATERIALS AND METHODS
Using trial femoral component of the 5 used TKRs in Korea and saw bone model, we checked their compatibility and measured the dimensions of the intercondylar notches in both cruciate retaining (CR) and posterior stabilized (PS) type.
RESULTS
Although most CR prostheses had an intercondylar notch large enough to accept a supracondylar nail, in some case, this was not possible due to the notch being situated too far posteriorly. The position of the intercondylar notch is also important factor in the PS prostheses.
CONCLUSION
The notch position, rather than the notch size, was the most important factor in determining nail compatibility with femoral stem.
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