CORAIL Cementless Fixation
The design of the CORAIL stem extra medullary section improves the biomechanics of the stem. Its titanium alloy and its full hydroxyapatite coating ensures load transfer without abnormal peak forces1-4 and allows a very low incidence of thigh pain.1,3,5-9
155 μm hydroxyapatite coating on the grit-blasted surface of the CORAIL stem induces rapid osteointegration.10,11 The HA coated medial to lateral taper resists axial / torsional stresses and promotes osteointegration for optimum fixation.3
CORAIL Cemented Fixation
The CORAIL Hip Stem is also available as a cemented version. The surgeon using the CORAIL Hip System has intraoperative flexibility to use the most suitable implant for the patient.
Following an ‘intra-capsular fracture’ this male was templated for a hydroxyapatite coated CORAIL stem.
Having prepared the femur for a CORAIL Stem, the surgical team selected the cemented option from the CORAIL Hip System. This was a more suitable implant for this patient. Both hydroxyapatite coated and cemented options share exactly the same broach envelope and instrumentation.
“The cement mantle distribution was similar for the Titan and Cemented version of the CORAIL Hip System.”
Nick Bishop, Dr MM Morlock, Ph.D.
Technical University Hamburg-Harburg, Biomechanics Section. Hamburg, Germany, Sept 2008.
“In the current FEA study, the mechanical performance of the CORAIL Hip System Cemented implant was analysed and compared to that of the Titan and CHARNLEY® implants. The simulations indicated that the mechanical performance of the CORAIL Hip System Cemented was superior to that of the Titan and CHARNLEY stems. Fewer cracks were formed in the cement mantle surrounding the Cemented version of the CORAIL Hip System during the loading history. Furthermore, the migration values for the CORAIL Hip System implant were very small (lower than 20 μm).”
Dennis Janssen, MSc, Nico Verdonschot, PhD, Radboud
University Nijmegen Medical Centre Orthopaedic Research Lab, Nijmegen, The Netherlands, Apr 2008.