Background:
Bone morphogenetic protein 2 (BMP-2) is one of the most widely used biologics in spine surgery. Its osteoinductive properties have been shown since its inception to improve fusion rates. Despite the positive effects on promoting fusion, there remains concerns regarding the significant costs associated with its use. The goal of this review was to investigate the value of BMP-2 in spine surgery.
Methods:
A literature search was performed on various studies that report on the cost effectiveness and the value of BMP-2 in spine surgery. The value of BMP-2 was analyzed in two distinct settings: comparison to the gold standard iliac crest autograft and demineralized bone matrix. The value of BMP-2 was further analyzed in the setting of spinal deformity surgery.
Results:
The findings of our review determined that BMP-2 offers significant improvement in outcomes related to improvement of fusion rates and minimization of pseudoarthrosis and reoperations related to pseudoarthrosis and donor site morbidity from harvesting iliac crest bone graft. However, BMP-2 has been found to be significantly more expensive in comparison to iliac crest bone graft and other bone graft substitutes, which detracts from its positive value. In deformity surgery, BMP-2 is associated with improvement in fusion rates as well as reducing the rate of reoperations and pseudoarthrosis. These positive outcomes, however, are associated with an expensive upfront cost for BMP-2.
Conclusions:
In terms of value, BMP-2 is associated with improvement in quality outcomes related to a reduction in pseudoarthrosis and reoperations. It also leads to improved outcomes with a reduction in donor site morbidity associated with iliac crest bone graft harvest. However, the value of BMP-2 is negatively affected because of its significant costs. As a result, higher expense thresholds are needed to increase quality adjusted life years in patients who receive BMP-2. Further research investigating ways to minimize the costs associated with BMP-2 use can further improve its value in spine surgery.