Imaging observation of PMMA leakage in percutaneous kyphoplasty
JIN Xin
SHI Da-wei
JIAO Feng-jun
ZHANG Yong-li
FANG Rui
GUAN Kai
Abstract：Objective To retrospectively observe the characteristics of PMMA leakage in percutaneous kyphoplasty (PKP) for treating osteoporotic vertebral compression fracture (OVCF),and to discuss its influence on the clinical effects.Methods From May 2011 to Jun.2014,286 vertebras of 278 OVCF patients were conducted by PKP in our spinal surgery department.Whether there was leakage of bone cement and the type of leakage were determined by the use of intraoperative monitoring,the C arm and CT examination.96 cases (102 vertebras) of bone cement leakage were as group A,in which there were 28 males and 68 females aged 47-85 years (average 65.8 years);While 182 cases (184 vertebras) without bone cement leakage were as group B,in which there were 48 males and 134 females aged 45-86 years(average 67.3 years).Statistical analysis and comparison were conducted on the height recovery,change of Cobb's angle,and the visual analogue scale(VAS)of preoperative,postoperative and follow-up between two groups.Results There were 28 vertebras accounted for 27.5％ in Group A of PMMA leakage into the spinal canal,in which 26 vertebras accounted for 25.5％ of leakage through basivertebral foramen,and the other 2 vertebras accounted for 2.0％ had leakage through fracted pedicles.32 vertebras accounted for 31.4％ had leakage into the intervertebral disc;42 vertebras (leakage into the lateral and front side of the vertebral body,the adjacent vertebral veins and the needle channel) accounted for the other 41.1％.The cement volume of Group A was significantly more than that of Group B (P＜0.05);while the height recovery,change of Cobb's angle,and the VAS of preoperative,postoperative and follow-up were not statistically different between the two groups(P＞0.05).Conclusion The amount of bone cement injection may account to the frequent occurrence of cement leakage.The basivertebral foramen and superior endplate are the main part of the bone cement leakage.The relationship between the leakage of bone cement amount and vertebral body height,Cobb's angle and the patients' pain relief is not obvious.
Keywords：osteoporotic vertebral compression fracture (OVCF)percutaneous kyphoplasty(PKP)bone cementleakagecomplications
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 287-290 )