Zementwahl bei der Ballonkyphoplastie - Anforderungsprofil und klinische Eignung

In kyphoplasty and vertebroplasty, polymethylmethacrylate (PMMA) currently represents the standard augmentation material. It is characterized, however, by a lack of osteointegration and limited biocompatibility. This paper discusses favorable properties of different types of cement and investigates the feasibility of calcium phosphate (CaP) in balloon kyphoplasty if compared to PMMA. A total of 60 fractures in 55 patients were included. Both CaP and PMMA were applied in 30 vertebra each. Complications that turned out to be cement-specific were: vascular embolism (n = 2) using PMMA; as well as subtotal "cement washout" (n = 1), and radiographic loss of correction (n = 9) due to cement failure in fractures type A3 using CaP. Currently in kyphoplasty, a routine use of CaP cannot be recommended. Due to its minor resistance to bending, extension, and shear forces if compared to PMMA, there is a higher risk of cement failure and subsequent loss of correction.