[Clinical study of temperature contrast injection procedure in prevention of bone cement leakage during vertebroplasty].

Objective: To observe the effect of temperature contrast injection procedure on prevention and reduction of bone cement leakage in vertebroplasty (PVP).

Methods: The clinical data of 42 patients(48 vertebral bodies) with osteoporotic vertebral compression fractures(OVCFs) treated from July 2014 to July 2018 were retrospectively analyzed. There were 19 males and 23 females, aged from 62 to 80 years old with an average of 72 years. The vertebral fracture segment was T₈-L₅, including 30 lumbar vertebrae and 18 thoracic vertebrae. The course of the disease ranged from 3 d to 2 months. Twenty cases (20 vertebral bodies) were treated by single vertebroplasty (group A) and 22 cases (28 vertebral bodies) were treated by temperature contrast injection procedure(group B). The operative time, amount of bone cement injection, VAS score at 3 days after surgery, leakage rate and refracture rate were compared between two groups.

Results: The operative time, amount of bone cement injection and VAS score at 3 days after surgery in group B were (40.05±7.78) min, (3.93±0.19) ml, (3.55±0.74) points, respectively, and in group A were(38.90±6.81) min, (4.03±0.24) ml, (4.05±1.00) points, there was no significant difference between two groups(>0.05). The leakage rate in group B was lower than that in group A (9.1% vs 40.0%, <0.05). The refracture rate in group B was 9.1%(2/22), in group A was 15.0%(3/20), there was no significant difference between two groups (>0.05).

Conclusions: Temperature contrast injection procedure is an effective method to reduce the bone cement leakage in vertebroplasty.