Journal of Materials Engineering and Performance

, Volume 21, Issue 12, pp 2650-2656

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Preparation and Characterization of Nitinol Bone Staples for Cranio-Maxillofacial Surgery

  • Z. LekstonAffiliated withInstitute of Materials Science, University of Silesia Email author 
  • , D. StróżAffiliated withInstitute of Materials Science, University of Silesia
  • , M. Jędrusik-PawłowskaAffiliated withDepartment of Skull and Maxillofacial Surgery, Silesian Medical University


The aim of this work was to form NiTi and TiNiCo body temperature activated and superelastic staples for clinical joining of mandible and face bone fractures. The alloys were obtained by VIM technique. Hot and cold processing was applied to obtain wires of required diameters. The martensitic transformation was studied by DSC, XRD, and TEM. The shape memory effects were measured by a bend and free recovery ASTM F2082-06 test. The superelasticity was recorded in the tension stress-strain and by the three-point bending cycles in an instrument equipped with a Hottinger force transducer and LVDT. Excellent superelastic behavior of TiNiCo wires was obtained after cold working and annealing at 400-500 °C. The body temperature activated shape memory staples were applied for fixation of mandibular condyle fractures. In experiments on the skull models, fixation of the facial fractures by using shape memory and superelastic staples were compared. The superelastic staples were used in osteosynthesis of zygomatico-maxillo-orbital fractures.


maxillofacial surgery nitinol bone staples osteosynthesis shape memory alloys