Monday, July 18, 2016

Glenoid retroversion ≠ subluxation, two year followup on a ream and run

In a prior post (see this link), we've pointed out that humeral decentering on the glenoid (i.e. subluxation) does not necessarily accompany glenoid retroversion. 

The x-ray below from a 35 year old man shows 40 degrees of preoperative glenoid retroversion, but the humeral head is centered on the face of the glenoid.

On the postoperative film two years after his ream and run procedure, the glenoid is still retroverted by 40 degrees. The prosthetic humeral head is remains centered on the glenoid on the 'truth' view.


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