(27 days)
Indications:
In cemented or cementless hip arthroplasty, when an acetabular shell plug is thought to be advantageous. Indications for use when used with the Trident II Acetabular Shells.
· Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatic arthritis or late stage avascular necrosis.
- · Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
· Clinical management problems where arthrodesis or alternative techniques are less likely to achieve satisfactory results.
· Where bone stock is of poor quality or is inadequate for other reconstructive techniques as indicated by deficiencies of the acetabulum.
When used with MDM Liners
· Treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques.
• Dislocation risks
When used with Constrained Liners
• The Trident® Constrained Acetabular Insert is indicated for use in primary and revision patients at high risk of hip dislocation due to a history of prior dislocation, bone loss, joint or soft tissue laxity, neuromuscular disease, or intraoperative instability.
The Trident II Acetabular Shells are indicated for cementless use only.
The Acetabular Dome Hole Plug, originally cleared via K942809, is an optional device used to seal acetabular shells. The Acetabular Dome Hole Plug has a threaded disc profile that can be screwed into the threaded dome hole of an acetabular shell sealing the device. Once assembled, the inferior face of the Acetabular Dome Hole Plug will be flush with the internal surface of the acetabular shell.
This Special 510(k) submission proposes labeling modifications to the package insert that was previously cleared in K191358 for the Acetabular Dome Hole Plug for use with the compatible Stryker Acetabular Shells. Specifically, the proposed labeling change is to remove the contraindication related to obesity and replace it with a warning statement concerning patient weight.
There is no change to the design (e.g., materials, dimensions, etc.) of the Acetabular Dome Hole Plug and no change to the direction for use of the device. The intended use, packaging, and sterilization of the Acetabular Dome Hole Plug device also remain unchanged.
The provided document is a 510(k) Premarket Notification from the FDA regarding an Acetabular Dome Hole Plug. This document does not describe an AI medical device or a study proving that an AI device meets acceptance criteria.
The submission is for a material medical device (a plug for hip implants) and specifically states:
- "Performance testing was not required in support of the labeling modifications..." (Page 6)
- "Clinical testing was not required as a basis to demonstrate substantial equivalence." (Page 7)
Therefore, I cannot extract the information required to answer your prompt, as the document does not contain any information about: studies with test sets, expert ground truth, adjudication methods, MRMC studies, standalone performance, training sets, or AI acceptance criteria.
The document primarily focuses on a labeling modification for an existing physical medical device, arguing for substantial equivalence based on the fact that no changes were made to the device's design, materials, or function, only to its warning labels regarding patient weight.
§ 888.3358 Hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis.
(a)
Identification. A hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis is a device intended to be implanted to replace a hip joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across the joint. This generic type of device has a femoral component made of a cobalt-chromium-molybdenum (Co-Cr-Mo) alloy or a titanium-aluminum-vanadium (Ti-6Al-4V) alloy and an acetabular component composed of an ultra-high molecular weight polyethylene articulating bearing surface fixed in a metal shell made of Co-Cr-Mo or Ti-6Al-4V. The femoral stem and acetabular shell have a porous coating made of, in the case of Co-Cr-Mo substrates, beads of the same alloy, and in the case of Ti-6Al-4V substrates, fibers of commercially pure titanium or Ti-6Al-4V alloy. The porous coating has a volume porosity between 30 and 70 percent, an average pore size between 100 and 1,000 microns, interconnecting porosity, and a porous coating thickness between 500 and 1,500 microns. The generic type of device has a design to achieve biological fixation to bone without the use of bone cement.(b)
Classification. Class II.