Ju-Young Shin; Hyung-Jun Kim; Seung-Han Cha; Dong-Heon Kim

doi:10.12671/jkfs.2012.25.1.1

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Original Article
Risk Factors of Periprosthetic Fracture after Total Knee Arthroplasty: Ju-Young Shin, M.D., Hyung-Jun Kim, M.D., Seung-Han Cha, M.D., Dong-Heon Kim, M.D.; Journal of the Korean Fracture Society 2012;25(1):1-7.
DOI: https://doi.org/10.12671/jkfs.2012.25.1.1
Published online: January 31, 2012

Department of Orthopaedic Surgery, College of Medicine, Konkuk University, Chungju, Korea.

Address reprint requests to: Dong-Heon Kim, M.D. Department of Orthopaedic Surgery, College of Medicine, Konkuk University, 620-5, Kyohyun-dong, Chungju 380-704, Korea. Tel: 82-43-840-8250, Fax: 82-43-844-7300, kdkim@kku.ac.kr

• Received: March 1, 2011 • Revised: May 31, 2011 • Accepted: November 22, 2011

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Abstract
REFERENCES

Abstract

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.
Key words: Risk factor, Periprosthetic fracture, Total knee replacement

REFERENCES

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Fig. 1

(A) Tansverse sections of the distal femur showing notching.

(B) Sagittal section of the distal femur demonstrating grade III and IV notching.

Table 1

UCLA activity-level rating system

Table 2

The cause of periprosthetic supracondylar fracture

Table 3

Summary of patient's data

Table 4

Risk factors by Multi-variable logistic regression

Figure & Data

REFERENCES

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Risk Factors of Periprosthetic Fracture after Total Knee Arthroplasty

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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Figure

We recommend

Risk Factors of Periprosthetic Fracture after Total Knee Arthroplasty

Fig. 1 (A) Tansverse sections of the distal femur showing notching. (B) Sagittal section of the distal femur demonstrating grade III and IV notching.

Fig. 1

Risk Factors of Periprosthetic Fracture after Total Knee Arthroplasty

Table 1

UCLA activity-level rating system

Table 2

The cause of periprosthetic supracondylar fracture

Table 3

Summary of patient's data

Table 4

Risk factors by Multi-variable logistic regression

Table 1 UCLA activity-level rating system

Table 2 The cause of periprosthetic supracondylar fracture

Table 3 Summary of patient's data

Table 4 Risk factors by Multi-variable logistic regression