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Delta Shoulder

Please note that information on this site was NOT authored by Dr. Frederic A Matsen III and has not been proofread or intended for general public use.  Information was intended for internal use only and is a compilation for random notes and resources.

If you are looking for medical information about the treatment of shoulders, please visit shoulderarthritis.blogspot.com for an index of the many blog entries by Dr. Frederick A Matsen III.

Reverse/Inverted/Inverse Shoulder Prostheses

There are several reverse shoulder systems currently used in the US, and many more used in the past and abroad.

DePuy Delta Reverse	Tornier Aequalis Reverse

Note subtle difference in neck taper between Delta and Aequalis.  The Delta also has an anterior and posterior hemi circle notched out of humeral head.  The Tornier often has a nub on most posterior and superior part of humeral component.

DePuy Delta Reverse - See DePuy Delta Systems for more images

DePuy Delta Reverse	DePuy Delta Reverse Long Stem The reverse shoulder prosthesis: a review of imaging features and complications

	Salvage head Treatment of Painful Pseudoparesis Due to Irreparable Rotator Cuff  Dysfunction with the Delta III Reverse-Ball-and-Socket Total Shoulder Prosthesis	Failure of the glenoid baseplate Complications of Total Shoulder Arthroplasty

DePuy Delta III - See DePuy Delta Systems for more images

aka Grammont Reverse or Inverse Total Shoulder

	Arrow shows notching Radiologic Assessment of Reverse Shoulder Arthroplasty & Complications of Total Shoulder Arthroplasty	Radiologic Assessment of Reverse Shoulder Arthroplasty	Shoulder reconstruction using Grammont (Delta III) total arthroplasty after resection for malignant bony tumours of proximal humerus

DePuy Delta Xtend - See DePuy Delta Systems for more images

DePuy Delta Xtend

Exactech Reverse System

Encore Reverse Shoulder			The Reverse Shoulder Prosthesis for Glenohumeral Arthritis Associated with Severe Rotator Cuff Deficiency. A Minimum Two-Year Follow-up Study of Sixty Patients Surgical Technique

dislodgement glenoid baseplate The reverse shoulder prosthesis: a review of imaging features and complications	Humeral Fracture The reverse shoulder prosthesis: a review of imaging features and complications	Long Stem Augmented with proximal humeral allograft The Use of the Reverse Shoulder Prosthesis for the Treatment of Failed Hemiarthroplasty for Proximal Humeral Fracture	The Use of the Reverse Shoulder Prosthesis for the Treatment of Failed Hemiarthroplasty for Proximal Humeral Fracture

Tornier Aequalis Reverse	Note Posterior superior nub on head and head extension

	The reverse shoulder prosthesis: a review of imaging features and complications	Notching The reverse shoulder prosthesis: a review of imaging features and complications	Dislocations The reverse shoulder prosthesis: a review of imaging features and complications	Dislocation Published as Tornier The reverse shoulder prosthesis: a review of imaging features and complications

Note protruding nub on lateral superior most portion of humeral component.  This nub is not always present.

Tornier Fracture Reverse

	Spacer for poly

Tornier Reverse Adapter

This adapter fits on the Modular cemented, cemented, press fit and fracture stems.

Zimmer Anatomical Reverse

Zimmer Anatomical Reverse

This system uses the same humeral stems as the Zimmer Anatomical Shoulder System.   Note the Keel like (it is a keel) base of glenoid plate.  This may be press fit or cemented into glenoid.  The Zimmer Anatomical system may also use the Zimmer TM glenoid system.

The stem may be either the Standard Stem Cemented (CoCrMo Cast Alloy) or the Humeral Stem Uncemented (TiAlNb Wrought Alloy)

Zimmer Trabecular Reverse

Zimmer Trabecular Reverse

Zimmer Trabecular Glenoid backing