title: Biomechanical evaluation of CIBOR spine interbody fusion device.
abstract: The CIBOR PEEK spinal interbody fusion device is an anterior lumbar interbody fusion construct with a hollow center designed to accommodate an osteoinductive carbon foam insert to promote bony ingrowth to induce fusion where rigid stabilization is needed.
  
  
  
  Three different sizes of the device were investigated. Part-I: implants were tested under axial compression and rotation using polyurethane foam blocks. Part-II: simulated 2-legged stance using cadaveric specimen using the L5-S1 lumbar spine segment. Part-III: a survey feedback form was used to investigate two orthopedic surgeons concern regarding the implant.
  
  
  
  In Part-I, the subsidence hysteresis under axial compression loading was found to be statistical significant difference between these three implant sizes. It was noted that the implants had migration as rotation applied, and the amount of subsidence was a factor of the axial compression loads applied. In Part-II, a minor subsidence and carbon foam debris were observed when compared to each implant size. Poor contact surface of the implant with the end plates of the L5 or S1 vertebrae from the anterior view under maximum loads was observed; however, the implant seemed to be stable. Each surgeon has their own subjective opinion about the CIBOR implant.
  
  
  
  Two out of the three different sizes of the device (medium and large sizes) provided appropriate rigid stabilization at the physiological loads. Neither orthopedic surgeon was 100% satisfied with overall performance of the implant, but felt potential improvement could be made.
  
  
  
  This study indicates an option for operative treatment of spine interbody fusion, as the CIBOR spine interbody fusion device has a hollow center. This hollow center is designed to accommodate a carbon foam insert to promote bony ingrowth. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1157-1168, 2017.
authors.affiliation: Department of Orthopaedics Surgery, The University of Kansas School of Medicine - Wichita, 929 N. Saint Francis, Wichita, Kansas, 67214.|Orthopaedic Research Institute, Via Christi Health, 929 N. Saint Francis, Wichita, Kansas, 67214.
authors.forename: Alexander C M
authors.initials: ACM
authors.lastname: Chong
authors.affiliation: Department of Orthopaedics Surgery, The University of Kansas School of Medicine - Wichita, 929 N. Saint Francis, Wichita, Kansas, 67214.
authors.forename: Seth W
authors.initials: SW
authors.lastname: Harrer
authors.affiliation: Department of Orthopaedics Surgery, The University of Kansas School of Medicine - Wichita, 929 N. Saint Francis, Wichita, Kansas, 67214.
authors.forename: Michael H
authors.initials: MH
authors.lastname: Heggeness
authors.affiliation: Department of Orthopaedics Surgery, The University of Kansas School of Medicine - Wichita, 929 N. Saint Francis, Wichita, Kansas, 67214.|Orthopaedic Research Institute, Via Christi Health, 929 N. Saint Francis, Wichita, Kansas, 67214.|National Center of Innovation for Biomaterials in Orthopaedic Research, 1845 Fairmount St. Wichita, Kansas, 67260-0093.
authors.forename: Paul H
authors.initials: PH
authors.lastname: Wooley
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013123:Spinal Fusion / Q000295:instrumentation* / Q000379:methods*
keywords: anterior fixation; biomechanics; interbody fusion; lumbar; polyether-ether-ketone