Adaptable Orthopedic Shape Memory Implants

Pfeifer, Ronny; Müller, Christian; Hurschler, Christof; Kaierle, Stefan; Wesling, Volker; Haferkamp, H.

doi:10.1016/j.procir.2013.01.050

Cited by 64 publications

(28 citation statements)

References 25 publications

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“…The nickel in nitinol is chemically joined to the titanium with a strong intermetallic bond, so the risk of reaction, even in patients with nickel sensitivity, is extremely low. 8,9 Despite all these structural properties, there is not sufficient evidence showing that these alloys could be used in reconstruction of a natural ligament. In our patient, early implant failure occurred when he was running smoothly without any landing, stopping, or cutting maneuver mechanism and also without a strong valgus or rotary force to his knee.…”

Section: Discussionmentioning

confidence: 99%

Fatigue Behavior of Nitinol Anterior Cruciate Ligament Graft and Inappropriate Femoral Tunnel Placement: Single-Stage Revision Anterior Cruciate Ligament Reconstruction Surgery

Karaaslan

Karaoğlu

2017

Arthroscopy Techniques

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Anterior cruciate ligament (ACL) injury is the most common ligament injury in the knee, and progressive instability and disability may develop in a significant number of patients. The incidence of ACL reconstruction is rapidly increasing, as is the number of failures. Although ACL reconstruction is a common procedure, less than satisfactory outcomes have been reported to occur in up to 25% of patients. The reasons for clinical failure after ACL reconstruction are numerous but can be broadly separated into 3 categories: technical, biological, and mechanical failures. It is generally thought that poor tunnel positioning (especially the femoral tunnel) is the most common technical error. Revision ACL reconstruction can be performed in 1 or 2 stages. The decision to perform a multistage approach is based on the position and size of the original tunnels. The varied success rates and associated advantages and disadvantages of each method have resulted in controversy as to the best treatment for revision ACL surgery. We describe our preferred operative technique to remove a fractured nitinol synthetic ACL graft and manage single-stage revision ACL reconstruction without bone grafting.

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Section: Discussionmentioning

confidence: 99%

Fatigue Behavior of Nitinol Anterior Cruciate Ligament Graft and Inappropriate Femoral Tunnel Placement: Single-Stage Revision Anterior Cruciate Ligament Reconstruction Surgery

Karaaslan

Karaoğlu

2017

Arthroscopy Techniques

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“…The stiffness is altered using an induction device, triggering the shape-memory effect at a desirable date after implantation and straightening the deformed outer sheet. Such complex implants have been previously made by the application of laser cutting and welding, 19 while they can be manufactured in one step using AM technology. Figure 9b demonstrates an orthopedic fi xator (a surgical implant used to aid bone healing) that can be fi tted to the outer bone body via the shape-memory effect.…”

Section: Potential Biomedical Applications Of Laser Am-produced Niti mentioning

confidence: 99%

Laser additive manufacturing of bulk and porous shape-memory NiTi alloys: From processes to potential biomedical applications

et al. 2016

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“…During the transition phase, if the shape memory alloy stops to change its shape, it can generate stresses up to 700 MPa and these stresses are useful to join broken bones. The elastic modulus of NiTi is too close to that of the bone material of the human body and can also be used as an implant [3,32,52,53].…”

Section: Applications Of Nitinol In Orthopedicsmentioning

confidence: 99%

Brief Overview on Nitinol as Biomaterial

Wadood

2016

Advances in Materials Science and Engineering

111

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Shape memory alloys remember their shape due to thermoelastic martensitic phase transformation. These alloys have advantages in terms of large recoverable strain and these alloys can exert continuous force during use. Equiatomic NiTi, also known as nitinol, has a great potential for use as a biomaterial as compared to other conventional materials due to its shape memory and superelastic properties. In this paper, an overview of recent research and development related to NiTi based shape memory alloys is presented. Applications and uses of NiTi based shape memory alloys as biomaterials are discussed. Biocompatibility issues of nitinol and researchers’ approach to overcome this problem are also briefly discussed.

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Adaptable Orthopedic Shape Memory Implants

Cited by 64 publications

References 25 publications

Fatigue Behavior of Nitinol Anterior Cruciate Ligament Graft and Inappropriate Femoral Tunnel Placement: Single-Stage Revision Anterior Cruciate Ligament Reconstruction Surgery

Fatigue Behavior of Nitinol Anterior Cruciate Ligament Graft and Inappropriate Femoral Tunnel Placement: Single-Stage Revision Anterior Cruciate Ligament Reconstruction Surgery

Laser additive manufacturing of bulk and porous shape-memory NiTi alloys: From processes to potential biomedical applications

Brief Overview on Nitinol as Biomaterial

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