Apatite-Coated Collagen Sponge for the Delivery of Bone Morphogenetic Protein-2 in Rabbit Posterolateral Lumbar Fusion

2014 ◽  
Vol 38 (10) ◽  
pp. 893-899 ◽  
Author(s):  
Ki Hyoung Koo ◽  
Jung Min Ahn ◽  
Jong Min Lee ◽  
Byung-Soo Kim ◽  
Chang-Sung Kim ◽  
...  
Neurosurgery ◽  
2010 ◽  
Vol 66 (6) ◽  
pp. 1044-1049 ◽  
Author(s):  
Mark P. Garrett ◽  
Udaya K. Kakarla ◽  
Randall W. Porter ◽  
Volker K.H. Sonntag

Abstract BACKGROUND The use of bone morphogenetic proteins for fusion augmentation in spine surgery has increased dramatically in recent years. Information is continually emerging regarding the effectiveness and safety profile of these compounds. OBJECTIVE We have noted an increased incidence in sterile seroma formation and painful edema after the use of recombinant human bone morphogenetic protein-2 (rhBMP-2) for posterolateral lumbar fusion. We present a retrospective review to determine the incidence of seroma formation and to discuss its clinical implications. METHODS We retrospectively reviewed the operative reports of patients who underwent posterolateral lumbar fusion with the addition of rhBMP-2. We identified all patients who required surgical exploration of a postoperative sterile seroma. RESULTS Of the 130 patients who underwent posterolateral lumbar fusion with rhBMP-2, 6 (4.6%) were returned to the operating room for exploration of a sterile seroma. The total amount of rhBMP-2 delivered to the posterolateral space per patient was 2.1 to 14.7 mg (mean, 8.4 mg per patient). The patients were returned to the operating room 5 to 13 days (mean, 7.7 days) after their initial surgery, and infection was ruled out in all cases by intraoperative cultures. CONCLUSION There seems to be an increased incidence of formation of sterile seroma and painful edema in the lumbar region after posterolateral fusion with rhBMP-2. This report, along with other series highlighting the potential complications of bone morphogenetic proteins, suggests that more caution should be used when these compounds are used. Further studies are required to better define the risks and benefits of using bone morphogenetic proteins for spine surgery.


2008 ◽  
Vol 8 (6) ◽  
pp. 529-535 ◽  
Author(s):  
Luis M. Tumialán ◽  
Jeff Pan ◽  
Gerald E. Rodts ◽  
Praveen V. Mummaneni

Object The goal in this study was to demonstrate the safety and efficacy of anterior cervical discectomy and fusion ([ACDF]; single- or multilevel procedure) performed using titanium plates and polyetheretherketone (PEEK) spacers filled with recombinant human bone morphogenetic protein–2 (rhBMP-2) impregnated in a type I collagen sponge to achieve fusion. Methods The authors retrospectively reviewed 200 patients who underwent a single- or multilevel ACDF with titanium plate fixation and PEEK spacer filled with a collagen sponge impregnated with low-dose rhBMP-2. Clinical outcomes were assessed using pre- and postoperative Nurick grades and the Odom criteria. Radiographic outcomes were assessed using dynamic radiographs and computed tomography (CT) scans. Results The follow-up period ranged from 8 to 36 months (mean 16.7 months). A single-level ACDF was performed in 96 patients, 2-level ACDF in 62 patients, 3-level ACDF in 36 patients, and 4-level ACDF in 6 patients. Long-term follow-up was available for 193 patients. The Odom outcomes were rated as good to excellent in 165 patients (85%), fair in 24 (12.4%), and poor in 4 (2%). Among patients with myelopathy, Nurick grades improved from a preoperative mean of 1.42 to a postoperative mean of 0.26. All patients (100%) achieved solid radiographic fusion on dynamic radiographs and CT scans. Fourteen patients (7%) in this series experienced clinically significant dysphagia, and 4 (2%) required repeated operation for hematoma or seroma. Conclusions An ACDF performed using a PEEK spacer filled with rhBMP-2 leads to good to excellent clinical outcomes and solid fusion, even in multilevel cases and in patients who are smokers. The incidence of symptomatic dysphagia may be decreased with a lower dose of rhBMP-2 that is placed only within the PEEK spacer.


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