Neer Shoulder Prostheses

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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.

Neer Shoulder Prostheses

Common US Shoulder Prostheses

Acumed Prostheses

Biomet Prostheses

Cofield (Smith and Nephew) Prostheses

Stryker Solar Prostheses

Tornier Prostheses

Zimmer Prostheses

Resurfacing Caps

Reverse/Inverted Shoulder Systems

DePuy Delta Systems

Elbow Prostheses

Plates

Odd, Uncommon, Discontinued, European Only and Experimental Systems

List of Implants and Manufactures and Distributors

Not Identified

The Neer prostheses were widely used in the past and have been made by several companies with different versions and generations.

Neer-I humeral heads (Stryker Howmedica)

Neer-II humeral heads (3M)

Neer-II total shoulders (3M)

Neer Mark-II prosthesis (3M)

Modular Shoulder System (3M) - 3M's modular system. The 3M Modular stem had a longer fin than the Neer II.

The Neer II (Kirschner) - a monoblock stem.

Kirschner II-C added proximal c porous coating.

Kirschner Modular II-C is identical to Kirschner II-C but with a modular head. These were made by a different company than the 3M Neer prostheses and are not designed to be interchangeable.

Kirschner/Biomet Modular II-CX are still available through Biomet.

Mod II Plus-C (Biomet) -

Atlas (Biomet) - Modular - 5 non- coated proximal bodies for the Atlas. choices in head thickness, proximal and distal stem diameters, stem lengths and proximal surface finish

Atlas (Biomet) -C - Modular - 5 porous coated proximal bodies for the Atlas-C and Both of these shared about 18 different stem options. All Atlas stems were modular.

Neer II - (Smith & Nephew)

Neer 3 - (Smith & Nephew)

Note that the Cofield 1 prosthesis are very similar to the earlier Neer first generation prostheses. The best way to differentiate these is by paying close attention to the inferior edge of the ventral fin. The Neer prostheses have a longer ventral fin that has an inferior edge lower than the dorsal fin.

Biomet Integrated Shoulder System


	Biomet Integrate Offset Head				Biomet Fracture

The Biomet Integrated Shoulder System includes the Atlas Modular line as well as the Neer humeral components originally made by Kirschner Medical Corporation which as been bought out by Biomet.

The Neer II - a monoblock stem.

Kirschner II-C added proximal q porous coating.

Kirschner Modular II-C is identical to Kirschner II-C but with a modular head. These were made by a different company than the 3M Neer prostheses and are not designed to be interchangeable.

Kirschner/Biomet Modular II-CX are still available through Biomet.

Mod II Plus-C -

Atlas- Modular - choices in head thickness, proximal and distal stem diameters, stem lengths and proximal surface finish

Atlas-C - Modular


Biomet Upper Extremity	Modular-II-C

Surgery done 1994

3M (Mediloy)


Note difference in Dorsal Fin Shape Recent Experience in Total Shoulder Replacement	Recent Experience in Total Shoulder Replacement	Recent Experience in Total Shoulder Replacement

3M Neer


Neer II	Neer II

The initial implant designed by Neer was press-fitted and the Neer II implant was designed for fixation with polymethylmethacrylate.

3M has discontinued these products and defer inquires to Smith and Nephew.

Neer Mark-II (3M) or Osteonics (Stryker-
Howmedica-Osteonics)

Primary Hemiarthroplasty for Treatment of Proximal Humeral Fractures

smooth-textured Neer-II (3M);

Cofield tissue-ingrowth component (Smith and Nephew);

Bio-Modular light and medium textured stem (Biomet)

Damian M. Rispoli, John W. Sperling, George S. Athwal, Cathy D. Schleck, and Robert H. Cofield. Humeral Head Replacement for the Treatment of Osteoarthritis. J. Bone Joint Surg. Am., Dec 2006; 88: 2637 - 2644.

Not Confirmed

Sperling JW et al. Infection after shoulder arthroplasty. Clin Orthop 2001

3M Modular Shoulder Prosthesis

Note distinct inferior taper on dorsal fin.

Kirschner Medical Corporation Neer Humeral Component


		Isolation and Characterization of Polyethylene Wear Debris Associated with Osteolysis Following Total Shoulder Arthroplas

This company was bought out by Biomet.

Prosthesis Not Confirmed

Periprosthetic Humeral Fractures After Shoulder Arthroplasty

fractured superior screw

Kirschner Neer II cemented humeral component

Uncemented Glenoid Component in Total Shoulder Arthroplasty

Kirschner II-C plasma-sprayed uncemented humeral component

or Neer II cemented humeral component

Uncemented Glenoid Component in Total Shoulder Arthroplasty

Kirschner Neer or Cofield

Revision Total Shoulder Arthroplasty for the Treatment of Glenoid Arthrosis

mild posterosuperior subluxation and mild glenoid erosion

Kirschner Neer or Cofield

Shoulder Arthroplasty for Arthritis After Instability Surgery

Neer II - Brand Not Determined

Prosthetic Replacement of the Shoulder for the Treatment of Defects in the Rotator Cuff and the Surface of the Glenohumeral Joint

Neer (Kirschner);

Cofield-1 (Smith and Nephew)

Shoulder Arthroplasty for the Treatment of Postinfectious Glenohumeral Arthritis

Smith & Nephew Neer 3 Total Shoulder System


	Note 4^th hole

Neer Vitallium


Replacement Arthroplasty for Glenohumeral Osteoarthritis	Replacement Arthroplasty for Glenohumeral Osteoarthritis

The one on left is the original Neer and the one on the right is one specifically made for a TSA
Keller J, Bak S, Bigliani LU, Levine WN. Glenoid Replacement in Total Shoulder Arthroplasty. ORTHOPEDICS 2006; 29:221

Seen in clinic 5 Oct 07 - Believe that this is an early Neer prosthesis