An orthopedic implant is a medical device manufactured to replace a missing joint or bone, or to support a damaged bone. The medical implant is mainly fabricated using stainless steel and titanium alloys for strength and the plastic coating that is done on it acts as an artificial cartilage. The biodegradable metals in this category are magnesium-based and iron-based alloys, though recently zinc has also been investigated. Currently, the uses of bioresorbable metals are as fracture fixation implants Internal fixation is an operation in orthopedics that involves the surgical implementation of implants to repair a bone. During the surgery of broken bones through internal fixation the bone fragments are first reduced into their normal alignment then they are held together with the help of internal fixators such as plates, screws, nails, pins, and wires. Additionally, composite materials are in development; screws are placed first whereafter the composite construct is made.

Eponymous implants and their uses Austin-Moore prosthesis for fracture of the neck of the femur Baksi's prosthesis for elbow replacement Charnley prosthesis for total hip replacement Condylar blade plate for condylar fractures of the femur Ender's nail for fixing intertrochanteric fracture Grosse-Kempf nail for tibial or femoral shaft fracture Hansson pin (or LIH for Lars Ingvar Hansson), a hook-pin used for fractures of the femoral neck Harrington rod for fixation of the spine Hartshill rectangle for fixation of the spine Insall Burstein prosthesis : for total knee replacement Richard N.W. Wohns interspinous implant and implantation instrument intended to be implanted between two adjacent dorsal spines Kirschner wire for fixation of small bones Kuntscher nail for fracture of the shaft of the femur Luque rod: for fixation of the spine Moore's pin for fracture of the neck of the femur Neer's prosthesis for shoulder replacement Rush nail for diaphyseal fractures of a long bone Smith-Petersen nail for fracture of the neck of femur Smith-Petersen nail with McLaughlin's plate for intertrochanteric fracture Seidel nail for fracture of the shaft of the humerus Souter's prosthesis for elbow replacement Steffee plate for fixation of the spine Steinmann pin for skeletal traction Swanson prosthesis for the replacement of joints of the fingers Talwalkar nail for fracture of radius and ulna Thompson prosthesis for fracture of the neck of the femur

Branded Systems

Waldemar Link DePuy SynthesVast Ortho Stryker Smith & Nephew Biomet Orthofix Zimmer Elective Total Hip ReplacementLubinus SP IIAustin Moore Bipolar

Thompson Exeter AccoladeHip hemiarthroplasty Hip resurfacingBirmingham Total Knee ReplacementGemini Endo-Model Sigma Attune Triathlon Scorpio Journey Legion

Genesis II Vanguard VanguardXPNexGen Persona Unicompartmental knee arthroplastySledOxford Shoulder/Elbow/Ankle Replacement Trauma Femoral Nail Expert LFN/RAFN/ALFN PFNA

TFNPFNA PFNA II

TFN Gamma nail Intertan nailZNN System, NCB System Tibial Nail Expert tibia nailTibia Nail T2 tibia nailZNN System, NCB System External fixationIlizarov Ring Clamp

Trocar Hoffmann II Taylor spatial frame Ilizarov JET-XTrueLok Hex GalaxyLocking Plates (LCP)2.4mm Locking 2.7mm Locking

3.5mm Locking

4.5/5.0mm LockingAngled PlatesAngle Blade Plate Condylat Plate

DHC, DCS

Jewett Nail PlateSpineAnterior Cervical Plate Monoaxial Screws

Polyaxial Screws

Cages

Mesh

Image Gallery

Research progress The discipline of orthopedic implants is constantly evolving as new biomaterials become available. An important consideration in this respect is that the health status of the patient influences the optimal choice of the material to be implanted. For instance it was shown that patients with steatotic liver disease benefit from nanohydroxyapatite-coated (nHA) titanium surfaces, whereas this is not necessary for patients without fatty liver disease. A surface engineering method was developed for biodegradable magnesium alloys to enhance orthopedic implants.

See also CNT Bio-Stress Sensors

References