Wednesday, January 18, 2017

Humeral component eccentricity - getting it right

A 70 year old patient presented with painful clunking in the left shoulder after a prior arthroplasty. The anteroposterior view shown below indicates well fixed humeral and glenoid components. 

However, the 'truth' view, revealed a posteriorly sublimated humeral head that had been placed with the eccentricity directed posteriorly.

At the revision surgery, we found that the glenoid component was well fixed, but that the posterior glenoid polyethylene was severely eroded. We removed the glenoid component, smoothed the residual glenoid bone, placed an anteriorly eccentric humeral component, and performed a rotator interval plication.

At surgery and as seen in the postoperative 'truth' view,  the shoulder is now posteriorly stable.
Comment: This case demonstrates the value of the 'truth' view as well as the importance of proper orientation of humeral head eccentricity.

More about the 'truth' view can be seen here,  here, and here.


Consultation for those who live a distance away from Seattle.

Click here to see the new Shoulder Arthritis Book.

Click here to see the new Rotator Cuff Book

Information about shoulder exercises can be found at this link.

Use the "Search" box to the right to find other topics of interest to you.

You may be interested in some of our most visited web pages including:shoulder arthritis, total shoulder, ream and runreverse total shoulderreverse total shoulder patient information,  CTA arthroplasty, and rotator cuff surgery as well as the 'ream and run essentials'

See from which cities our patients come.