03121nam a22004817a 4500
201231s20212021 xxu||||| |||| 00| 0 eng d
1067-151X
10.5435/JAAOS-D-20-00671 [doi]
Ovid MEDLINE(R)
33264136
Offset in Reverse Shoulder Arthroplasty: Where, When, and How Much.
Journal of the American Academy of Orthopaedic Surgeons. 29(3):89-99, 2021 Feb 01.
J Am Acad Orthop Surg. 29(3):89-99, 2021 Feb 01.
J Am Acad Orthop Surg. 2020 Dec 01
The Journal of the American Academy of Orthopaedic Surgeons
2021
FY2021
aheadofprint
ppublish
2020-12-31
Journal of the American Academy of Orthopaedic Surgeons. 2020 Dec 01
Available online from MWHC library: Oct 1993 - present, Available in print through MWHC library: 1999 - present
Since the advent of Paul Grammont medialized reverse shoulder prosthesis in the 1980s, shoulder surgeons have had a reliable option for treating glenohumeral joint disease in the rotator cuff-deficient shoulder. However, the prosthesis is not without complications, including scapular notching, instability, and limited rotational motion. Implants have been modified from the original design in an effort to reduce the risk of these complications. Increasing the offset, or lateralization, of the glenosphere may reduce the rate of scapular notching, reduce impingement, increase stability, and improve rotational motion. However, a more lateralized glenosphere could lead to baseplate loosening, decreased deltoid efficiency, and increased risk of acromial fracture. Increasing the offset on the humeral side, rather than the glenosphere side, may be able to reduce the rate of scapular notching and improve rotational motion without an increased risk of baseplate loosening. Humeral lateralization also improves tension of the rotator cuff and maintains good deltoid efficiency. However, humeral lateralization provides little stability benefit, and acromial fracture remains a risk. Ultimately, the surgeon must be familiar with the implants he or she is using and the options for both glenosphere and humeral lateralization to ensure that risks and benefits can be weighed for each patient.
English
*Arthroplasty, Replacement, Shoulder
*Joint Prosthesis
*Shoulder Joint
Arthroplasty, Replacement, Shoulder/ae [Adverse Effects]
Female
Humans
Male
Prosthesis Design
Range of Motion, Articular
Scapula/su [Surgery]
Shoulder Joint/su [Surgery]
MedStar Union Memorial Hospital
Journal Article
Murthi, Anand M
Wright, Melissa A
Murthi AM, Wright MA
https://dx.doi.org/10.5435/JAAOS-D-20-00671
https://dx.doi.org/10.5435/JAAOS-D-20-00671
ART
Article
0
0
0
0
Article
authcat
authcat
2020-12-31
0
33264136
33264136
2020-12-31
2020-12-31
ART
5959
5959