Bone Cement Reperfusion Revision Surgery for Symptomatic Recurrence of Kümmell's Disease After Percutaneous Kyphoplasty.

Study design: Retrospective study.

Objectives: To demonstrate that repeat Percutaneous vertebroplasty (PVP) performed for the same cemented vertebrae in Kümmell's disease can offer therapeutic benefit for patients with recurrent symptoms after initial percutaneous kyphoplasty (PKP) treatment.

Methods: From January 2019 to December 2021, we investigated 2932 patients with PKP. Among them, 191 patients were diagnosed Kümmell's disease. 33 patients upon presentation of recurrent symptoms underwent repeat PVP procedure. Radiologic outcomes and clinic indices were investigated.

Results: Bone cement reperfusion surgery was successfully completed in 33 patients. The average age was 73.5 ± 8.2 years old. The kyphosis angle showed significant correction from pre-operation to the final follow-up, descending from pre-operation (20.6 ± 11.1°) to final follow-up (15.4 ± 7.9°). The vertebral heights at different follow-up appointments were significantly higher than the pre-operative appointments. The VAS and ODI scores at final follow-up were respectively 1.2 ± .8 and 27.3 ± 5.4%, which were both significantly lower than those before operation. No complications such as cement leakage into the spinal canal or cement displacement occurred during follow-up.

Conclusions: Bone cement reperfusion surgery can ameliorate kyphosis and restore vertebral height to some extent. Repeat PVP is a minimally invasive surgery that provides superior long-term results in clinical and radiological outcomes but is technically more difficult to perform.