J Korean Fract Soc.  2007 Jan;20(1):76-82. 10.12671/jkfs.2007.20.1.76.

Factors Confluencing the Result of Percutaneous Balloon Kyphoplasty in Osteoporotic Thoracolumbar Compression Fracture

• Lee JH
• Hwang DW
• Shin JH
• Hong WS
• Kim JW

• KMID: 2294383
• DOI: http://doi.org/10.12671/jkfs.2007.20.1.76

Abstract

PURPOSE
We are to find the method to objectify postoperative prognosis, analyzing the factors confluencing the result of kyphoplasty in osteoporotic vertebral compression fracture (OVCF).
MATERIALS AND METHODS
Our study included 50 patients (55 vertebral bodies) who have undergone kyphoplasty from Sep. 2004 until Oct. 2005. We divided in the group according to bone mineral density (BMD), compression rate, recovery rate and cement leakage. We verified the significance of each group, using independent t-test, and ANOVA test among observers.
RESULTS
We performed kyphoplasty on 55 vertebral bodies, 12 cases with more than 0.4 g/cm2 in BMD (mean: 0.53 g/cm2) and their mean preoperative compression rate (CR), immediate postoperative recovery rate (RR-IPO), and recovery rate after 6 months (RR-6M) was each 30.58%, 12.35%P, 9.93%P. 15 cases under 0.4 g/cm2 (mean 0.31 g/cm2), and their CR, RR-IPO and RR-6M was 26.73%, 11.77%P, 5.26%P respectively. The p-value was 0.004. Another studies according to CR, RR-IPO and leakage of cement revealed the better results in the cases of the lower CR, the smaller reduction and abscecnce of cement leakage, but statistically insignificant (p=0.309, 0.069, 0.356).
CONCLUSION
Preoperative BMD was most important factor that confluencing postoperative radiological result in OVCF. Other factors were also thought to be confluencing factors, but statistically insignificant..

Keyword

Osteoporosis; Thoracolumbar compression fracture; Kyphoplasty; Recovery rate

MeSH Terms

Bone Density
Fractures, Compression*
Humans
Kyphoplasty*
Methods
Osteoporosis
Prognosis

Figure

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  Fig. 1 Image of the L2 vertebral body from 80-years-old woman. a: Anterior height of vertebral body, p: Posterior height of vertebral body. Compression rate (%): (p-a)*100/p, Immediate recovery rate (%point): Preoperative compression rate-Immediate post-operative compression rate, Follow up recovery rate (%point): Preoperative compression rate-Follow up compression rate.

• 

  Fig. 2 Simple radiographs of 74 years old male has BMD score 0.333 with L1 compression fracture. (A) Preoperative lateral radiograph showed L1 compression fracture (compression rate: 20%). (B) Postoperative lateral radiograph showed kyphoplasty on T12 (recovery rate: 10%). (C) Postoperative 6 months follow up lateral radiograph (recovery rate: 6%).

• 

  Fig. 3 Simple radiographs of 74 years old female has compression fracture on T12. (A) Preoperative lateral radiograph showed T12 compression fracture (compression rate: 15%). (B) Postoperative lateral radiograph showed kyphoplasty on T12 (recovery rate: 12%). (C) Postoperative 6months follow up lateral radiograph (recovery rate: 12%).

• 

  Fig. 4 Simple radiographs of 80 years old female has compression fracture on T12. (A) Preoperative lateral radiograph showed T12 compression fracture (compression rate: 35%). (B) Postoperative lateral radiograph showed kyphoplasty on T12 (recovery rate: 17%). (C) Postoperative 6months follow up lateral radiograph (recovery rate: 3%)

• 

  Fig. 5 Simple radiographs of 74 years old male with T8 compression fracture. (A) Preoperative lateral radiograph showed T8 compression fracture (compression rate: 24%). (B) Postoperative lateral radiograph showed kyphoplasty on T8 (recovery rate: 3%). (C) Postoperative 6 months follow up lateral radiograph (recovery rate: 3%). (D) CT scan of T8 with endplate crack.

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