What is Glenosphere dissociation?

What is Glenosphere dissociation?

Traumatic glenosphere dissociation is a rare complication that may be associated with reverse total shoulder endoprostheses with longer humeral stems that generate a greater levering effect. Proper soft-tissue tensioning and surgical technique are critical.

What is glenoid loosening?

Glenoid loosening is the most common cause of failure in primary total shoulder arthroplasty (TSA) and often occurs years after the initial surgery. It is rare for a glenoid component to fail acutely. Several case reports of complete glenoid dissociation appear in the literature.

What is a Glenosphere?

The glenosphere is the rounded portion. of the prosthesis that is attached to the metaglene. Figure 1. Drawings illustrate normal reverse shoulder arthroplasty (left) and standard total shoulder arthroplasty (right).

What causes scapular notching?

Scapular notching, in particular, is a unique phenomenon of RTSA, and is caused by mechanical impingement between the humeral component and the neck of the glenoid. This can cause wear of the polyethylene humeral component and consequent osteolysis of the surrounding bone.

What is humeral loosening?

Humeral stem loosening is an uncommon complication following reverse shoulder arthroplasty (RSA). A systematic review by Zumstein et al. 1. in 2011 reported a 1.3% rate of humeral stem loosening. The timing of and factors contributing to aseptic stem loosening were not reported in that review.

Is shoulder replacement more painful than knee replacement?

In fact, the Johns Hopkins researchers say, their study shows that patients who undergo shoulder arthroplasty to relieve chronic and significant pain can expect significantly fewer complications, much shorter hospital stays and less costs than patients undergoing hip or knee replacement.

When is reverse shoulder replacement necessary?

The main reason to consider a reverse prosthesis is when there is arthritis of the shoulder joint and the rotator cuff tendons are torn or gone. This is the most common surgical indication for a patient considering a reverse prosthesis.

How do you stop a scapular notching?

Scapular notching may lead to deterioration of functional outcomes and glenoid implant loosening and failure. Lateral offset, inferior glenosphere overhang, and careful consideration of the presurgical glenoid morphology may help prevent scapular notching.

What is notching of the shoulder?

Scapular notching is a radiographic finding, which may occur following reverse total shoulder arthroplasty (rTSA). The term is used to describe an erosive lesion of the axillary border of the scapular neck that occurs when the medial rim of the humeral implant contacts the scapula during shoulder adduction.

Which surgery is worse hip or shoulder?

Summary: Contrary to widespread belief, total surgical replacement of arthritic shoulder joints carries no greater risk of complications than replacement of other major joints, a Johns Hopkins study suggests. Total shoulder replacements are as safe as swapping out hips and knees, according to Hopkins researchers.