Patent Application
20170360569
This disclosure relates to joint resurfacing components and methods.
Known shoulder joint resurfacing methods include resurfacing the entire articulating surface of the glenoid. Advancements in this field of technology are desirable, especially when they pertain to less invasive solutions that expand the continuum of patient care options.
This disclosure details exemplary joint resurfacing methods and components during surgical procedures, such as glenoid resurfacing procedures. The components include an implant for placement on one surface of a joint for articulation with another surface.
A method of resurfacing a glenoid according to an according to an exemplary aspect of the present disclosure includes resurfacing a first section of a glenoid surface with and implant while leaving a second section of the glenoid surface uncovered by the implant.
A method of resurfacing a glenoid according to an exemplary aspect of the present disclosure includes fixating an implant to a glenoid. The glenoid includes first and second concave surfaces, and the implant is fixated to only cover one of the first and second concave surfaces.
An implant for resurfacing a joint according to according to an exemplary aspect of the present disclosure includes an articulating surface component. A baseplate component is configured to receive the articulating surface component and includes a plurality of removable scores for customizing a size of the baseplate component.
The embodiments, examples and alternatives of the preceding paragraphs, the claims, or the following description and drawings, including any of their various aspects or respective individual features, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible.
The various features and advantages of this disclosure will become apparent to those skilled in the art from the following detailed description. The drawings that accompany the detailed description can be briefly described as follows.
This disclosure describes components and methods for joint resurfacing. For example, the components or methods could be used in glenoid resurfacing and/or a shoulder replacement procedure.
In some embodiments, the joint is a shoulder, and a partial surface of the glenoid of the shoulder is resurfaced with an implant. These and other features are described in greater detail in the following paragraphs of this detailed description.
In this non-limiting example, the posterior section 32 of the surface 24 of the glenoid 26 is resurfaced, while the anterior section 40 of the surface 24 of the glenoid 26 is not covered by the implant 22 and therefore not resurfaced. Thus, because the concave surface 34 articulates with the humerus 30 and the concave surface 33 does not, only a portion of the glenoid 26 is resurfaced with the implant 22. In this example, the humerus 30 is left to articulate in its non-anatomic position at the posterior section 32 of the glenoid 26. The width W1 of the articulating surface 36 of the implant 22 is less than the width W2 of the surface 24 of the glenoid 26, such that the surface area of the implant 22 is less than the surface area of the surface 24 of the glenoid 26.
Although the resurfaced section of the glenoid 26 in the example is the posterior section 32, the anterior section 40 could alternatively be the resurfaced section. In the case of a B2 glenoid, one of the concave surfaces 33, 34 is resurfaced, while the other of the concave surfaces 33, 34 is not resurfaced. In another example, the glenoid 26 may be partially resurfaced such that a central section of the glenoid 26 is resurfaced, while a peripheral section is not resurfaced.
In one non-limiting example, a graft or augment 42 (biologic or metallic) may be located between the articulating surface 36 of the implant 22 and the concave surface 34. In addition to improving fixation, the graft 42 may space the articulating surface 36 from the surface 34 and orient the implant 22 and articulating surface 36 in such a way that the articulating surface 36 and the surface 33 create a single concave articulating surface either at the time of implantation or following an interfacing with the humerus 30.
In this non-limiting example, the concave surface 34 at the posterior section 32 of the surface 24 of the glenoid 26 is resurfaced, while the concave surface 33 at the anterior section 40 of the surface 24 of the glenoid 26 is not covered by the implant 22 and therefore not resurfaced. The articulating surface 36 of the implant 22 and the surface 33 create a single concave surface for the glenoid 26. The humerus 30 may then be re-centered into an anatomic position to articulate with both the implant 22 and the surface 33 of the partially resurfaced glenoid 26. The width W1 of the articulating surface 36 of the implant 22 is less than the width W2 of the surface 24 of the glenoid 26, such that the surface area of the implant 22 is less than the surface area of the surface 24 of the glenoid 26.
Although the resurfaced section of the glenoid 26 in the example is the posterior section 32, the anterior section 40 may be the resurfaced section. In the case of a B2 glenoid, one of the concave surfaces 33, 34 is resurfaced, while the other of the concave surfaces 33, 34 is not resurfaced.
The disclosed non-limiting methods thus describe partial joint resurfacing of a B2 glenoid to allow for articulation of the humeral head in an anatomic position by re-centering the humeral head or in a non-anatomic position by not re-centering the humeral head. The disclosed methods may be used to treat a B2 glenoid or to slow the progression of a B1 glenoid into a B2 glenoid or any such progressive pathology. The disclosed methods may also be used to treat other types of partially worn glenoids.
Referring to
Another non-limiting example implant 22 may be an all biologic implant. The implant may be an allograft where bone and cartilage are implanted onto a defect to resurface a damaged glenoid 26.
Another non-limiting example implant 22 may be an all polyethylene implant. The polyethylene implant may be cemented into place. The polyethylene may include an attachment feature 38 such as a keel or peg to aide in fixation and rotation support.
Although the different non-limiting embodiments are illustrated as having specific components, the embodiments of this disclosure are not limited to those particular combinations. It is possible to use some of the components or features from any of the non-limiting embodiments in combination with features or components from any of the other non-limiting embodiments.
It should be understood that like reference numerals identify corresponding or similar elements throughout the several drawings. It should also be understood that although a particular component arrangement is disclosed and illustrated in these exemplary embodiments, other arrangements could also benefit from the teachings of this disclosure.
The foregoing description shall be interpreted as illustrative and not in any limiting sense. A worker of ordinary skill in the art would understand that certain modifications could come within the scope of this disclosure. For these reasons, the following claims should be studied to determine the true scope and content of this disclosure.
