What is the Stryker Trident II acetabular cup made of?
Stryker’s proprietary hydroxylapatite (HA) coating has been a consistent feature of our hip portfolio since it was first implanted in 1987. Trident II HA shells continue this legacy, incorporating approximately 50μm thick coating of PureFix HA over a roughened plasma spray titanium surface.
What is a Trident hip replacement?
The Trident® Ceramic System uses a process called arc deposition to apply a titanium metal coating to the Trident® acetabular shell’s outer surface. This coating gives a slightly rough and textured surface to the acetabular shell, allowing the implant to initially fixate onto the bone.
What is an acetabular shell?
A metal shell for bony ingrowth + a polyethylene liner (sometimes metal or ceramic) that snaps into the shell and articulates with the femoral head. The modern acetabular implant is a “press-fit” design (it is not cemented).
What is Trident cup?
The Trident Acetabular System utilizes the patented Innerchange Locking Mechanism. This unique locking mechanism helps provide a secure interface between the ceramic or polyethylene insert and the shell. Trident Alumina Ceramic Inserts gain fixation within the shell. by means of mating tapers.
What is the Stryker hip replacement made of?
It’s made from polyethylene, a type of plastic designed to increase range of motion, improve joint stability and reduce the risk of wear. Stryker also sells numerous femoral components, including press-fit stems, cemented stems and revision components.
What is the best hip replacement to have?
The posterior approach to total hip replacement is the most commonly used method and allows the surgeon excellent visibility of the joint, more precise placement of implants and is minimally invasive.
What is a acetabular liner?
The Acetabular Shell provides the base for bony ingrowth, while the liner clips into the shell and articulates directly with the Femoral Head. The Liner Size refers to its inner diameter = the Femoral Head Size. The poly must be at the very minimum 6 mm in thickness to prevent fracture.
What is the Zimmer hip replacement made of?
Zimmer’s Durom Acetabular Component (Durom Cup) Those hip joints were made from forged metal, instead of the cast metal used by traditional hip implants. The forged metal was supposed to be harder, smoother and more durable.
What kind of liners are in the Trident acetabular system?
The Trident Acetabular System from Stryker is an uncemented acetabular system which includes Crossfire polyethylene, X3 polyethylene, alumina ceramic, constrained liners, concentric and eccentric liners. The shells come in no-hole, cluster hole and multiple hole variants, hemispherical and PSL (peripheral self-locking or rim-fit)…
Why was the Trident acetabular system system recalled?
Some authors have expressed concern about incomplete seating of the titanium -backed ceramic liner, possibly because of deformation of the shell when inserted into underreamed bone (1). In 2008, some Trident shells were recalled because of concerns over manufacturing residues.
What kind of liners are in the Stryker acetabular system?
The Trident Acetabular System from Stryker is an uncemented acetabular system which includes Crossfire polyethylene, X3 polyethylene, alumina ceramic, constrained liners, concentric and eccentric liners.