(93 days)
The Reverse Shoulder Monoblock Prosthesis is indicated for patients with a functional deltoid muscle with a grossly deficient rotator cuff shoulder joint with severe arthropathy or a previously failed joint replacement with a grossly deficient rotator cuff shoulder joint:
- In cases of fracture of glenohumeral joint from trauma or pathologic conditions of the shoulder, including humeral head fracture or displaced 3-or 4-part fractures of proximal humerus.
- In cases of bone defect in proximal humerus.
The patient's joint must be anatomically and structurally suited to receive the selected implant(s).
The glenoid baseplate is intended for cementless application with the addition of screws for fixation. The humeral stem is intended for cemented use only.
This is a modification to the RSP Monoblock Stem cleared under K100741. The cleared RSP Monoblock Prosthesis system consists of a monoblock humeral stem with socket, humeral socket inserts, glenoid head, and glenoid head baseplate.
This change consists of the addition of an 8mm spacer and screw placed between the socket insert and the humeral shell portion of the RSP Monoblock stem to allow for 8mm humeral offset.
There is no change to the intended use or fundamental scientific technology. This includes no changes to packaging or sterilization.
The provided document is a 510(k) premarket notification letter from the FDA for a medical device (Reverse® Shoulder Monoblock Prosthesis). This type of document primarily focuses on demonstrating substantial equivalence to a predicate device, rather than providing detailed acceptance criteria, study methodologies, and performance metrics as would be found in a clinical trial report or a performance study summary.
Therefore, the document does not contain the information requested regarding acceptance criteria, device performance tables, sample sizes, data provenance, expert qualifications, adjudication methods, MRMC studies, standalone performance, ground truth types, training set details, or how ground truth was established.
Here's what the document does state regarding testing:
- Non-Clinical Testing: "Mechanical testing has demonstrated the device's ability to perform under expected conditions. Testing includes torque, lever out strength, load cycle, and screw torque."
- Clinical Testing: "None provided."
This implies that for this particular 510(k) submission, the FDA's decision was based on non-clinical (mechanical) testing and the device's substantial equivalence to previously cleared predicate devices, rather than new clinical effectiveness or performance studies.
§ 888.3660 Shoulder joint metal/polymer semi-constrained cemented prosthesis.
(a)
Identification. A shoulder joint metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a shoulder 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 includes prostheses that have a humeral resurfacing component made of alloys, such as cobalt-chromium-molybdenum, and a glenoid resurfacing component made of ultra-high molecular weight polyethylene, and is limited to those prostheses intended for use with bone cement (§ 888.3027).(b)
Classification. Class II. The special controls for this device are:(1) FDA's:
(i) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical Devices—Part I: Evaluation and Testing,’ ”
(ii) “510(k) Sterility Review Guidance of 2/12/90 (K90-1),”
(iii) “Guidance Document for Testing Orthopedic Implants with Modified Metallic Surfaces Apposing Bone or Bone Cement,”
(iv) “Guidance Document for the Preparation of Premarket Notification (510(k)) Application for Orthopedic Devices,” and
(v) “Guidance Document for Testing Non-articulating, ‘Mechanically Locked’ Modular Implant Components,”
(2) International Organization for Standardization's (ISO):
(i) ISO 5832-3:1996 “Implants for Surgery—Metallic Materials—Part 3: Wrought Titanium 6-aluminum 4-vandium Alloy,”
(ii) ISO 5832-4:1996 “Implants for Surgery—Metallic Materials—Part 4: Cobalt-chromium-molybdenum casting alloy,”
(iii) ISO 5832-12:1996 “Implants for Surgery—Metallic Materials—Part 12: Wrought Cobalt-chromium-molybdenum alloy,”
(iv) ISO 5833:1992 “Implants for Surgery—Acrylic Resin Cements,”
(v) ISO 5834-2:1998 “Implants for Surgery—Ultra-high Molecular Weight Polyethylene—Part 2: Moulded Forms,”
(vi) ISO 6018:1987 “Orthopaedic Implants—General Requirements for Marking, Packaging, and Labeling,” and
(vii) ISO 9001:1994 “Quality Systems—Model for Quality Assurance in Design/Development, Production, Installation, and Servicing,” and
(3) American Society for Testing and Materials':
(i) F 75-92 “Specification for Cast Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implant Material,”
(ii) F 648-98 “Specification for Ultra-High-Molecular-Weight Polyethylene Powder and Fabricated Form for Surgical Implants,”
(iii) F 799-96 “Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Forgings for Surgical Implants,”
(iv) F 1044-95 “Test Method for Shear Testing of Porous Metal Coatings,”
(v) F 1108-97 “Specification for Titanium-6 Aluminum-4 Vanadium Alloy Castings for Surgical Implants,”
(vi) F 1147-95 “Test Method for Tension Testing of Porous Metal,”
(vii) F 1378-97 “Standard Specification for Shoulder Prosthesis,” and
(viii) F 1537-94 “Specification for Wrought Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implants.”