Superelastic Ti–Ni alloy wire intramedullary nails for metastatic femoral pathologic fracture: A case report

Kasai, Yuichi; Takegami, Kenji; Matsumine, Akihiko; Kawamoto, Masataka; Uchida, Atsushi

doi:10.1002/jso.10249

Cited by 2 publications

(4 citation statements)

References 10 publications

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“…SD: standard deviation Bending forces were transferred to the bone by the memory alloy of the rod, and produced sufficient compression forces in the bone. Kasai et al [9] reported the use of intramedullary NitinolÒ-wires to treat pathologic fractures due to metastatic cancer in the femoral bone. Before insertion in the bone, the wire was easily manually bent in a U-shape.…”

Section: Discussionmentioning

confidence: 98%

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Do K-wires made from shape memory alloys increase pull-out forces? A preliminary experimental cadaver study in bovine bone

et al. 2007

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After osteosynthesis of the proximal humerus by Kirschner wires (K-wire), loosening and secondary loss can occur. This study tested primary fixation of wires made from a shape memory alloy (SMA) Nitinol (NiTi), compared to conventional steel K-wires by pull-out tests. Blocks of cancellous bone were tested with three wire types: NiTi-K-wire with split apex geometry and conventional steel K-wires with and without threads. We found that NiTi-wires can be pulled out of bone more easily than steel wires (P=0.05), even though the former had rougher surfaces. The application of NiTi-wires through bone produced no better stability in comparison to normal steel K-wires, because of triggering the memory effect. Further studies are required to determine if NiTi wires of another appropriate design, surface and localization are superior to conventional wires in the context of this application.

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Section: Discussionmentioning

confidence: 98%

“…Former studies [9,12] has been limited to test the effect of anchoring without and with memory alloys of nails or wires only intramedullary. Rubel et al [20] investigated the amount of fixation of SR-PLLA rods versus K-wires in cancellous bone by comparing their pull-out strength.…”

Section: Introductionmentioning

confidence: 99%

Do K-wires made from shape memory alloys increase pull-out forces? A preliminary experimental cadaver study in bovine bone

et al. 2007

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“…SMAs have gradually become common as materials in internal fixing implants for fractures such as bone-setting plates, intramedullary nails and staples [1-4]. Musialek et al .…”

Section: Discussionmentioning

confidence: 99%

“…Shape-memory alloys (SMAs), or metals with both shape-memory and superelastic properties, are clinically applied in various surgical areas, including orthopedic surgery [1-8]. In 2003, we reported a method using superelastic SMA wires as intramedullary nails in the treatment of pathological fracture of a human femur due to metastatic bone tumors.…”

Section: Introductionmentioning

confidence: 99%

Basic Research on a Cylindrical Implant Made of Shape-Memory Alloy for the Treatment of Long Bone Fracture

Kawakita¹,

Wang²,

Kato³

et al. 2012

TOORTHJ

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The internal fixing materials made from shape-memory alloys (SMAs) have recently been reported for long bone fracture. We present a new internal fixation technique using a cylindrical SMAs implant in a rat femoral fracture healing. The implant was designed in a shape to circumferentially fix the fractured bone using resilient SMA claws. To evaluate the fixing ability of the implant, three-point bending and rotation tests were performed. Fifteen female Wister rats were treated surgically as an experimental model. All rats were killed at 16 weeks postoperatively, and the radiological and histological evaluations were performed. In biomechanical test, the good fixation ability of the implant was demonstrated. In animal model, no cases of postoperative infection or death were encountered and postoperative gait was stable in all cases. Radiological examination at 16 weeks postoperatively demonstrated the implant firmly fixed to the fractured part, endosteal healing, and no callus formation in all cases. In Histological evaluation, bone union in all cases was characterized by endochondral ossification from within the medullary cavity. In conclusion, our cylindrical SMA implant provided good fixation in biomechanical tests, and achieved bone union in all 15 rats. If a larger size is designed in the future, our implant will be a clinically applicable, useful fixing material for fracture of the human long bones.

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Superelastic Ti–Ni alloy wire intramedullary nails for metastatic femoral pathologic fracture: A case report

Cited by 2 publications

References 10 publications

Do K-wires made from shape memory alloys increase pull-out forces? A preliminary experimental cadaver study in bovine bone

Do K-wires made from shape memory alloys increase pull-out forces? A preliminary experimental cadaver study in bovine bone

Basic Research on a Cylindrical Implant Made of Shape-Memory Alloy for the Treatment of Long Bone Fracture

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