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September 17, 2019

What is total shoulder arthroplasty?

Total Shoulder Arthroplasty

Orthopedic surgeons perform total shoulder arthroplasty (TSA) to treat severe shoulder pain and lack of motion. During TSA surgery, the surgeon replaces diseased and injured joint components with medical-grade implants designed to appear similar to our normal, healthy shoulder joint. The four important soft tissue stabilizers of the shoulder (often referred to as the rotator cuff) must be functioning well to support the TSA procedure. Stryker offers a different implant design for when the soft tissue is not properly functioning.

Reunion tsa image
Tsa stem

Stryker designed the ReUnion TSA shoulder replacement system to address some of the most common arthritic disorders affecting the shoulder.

With a total shoulder replacement, the surgeon replaces the top of the upper arm bone (humeral head) with a spherical shaped component that fits onto a stem placed inside the bone. The surgeon lines the shoulder’s natural socket (glenoid) with a special plastic (polyethylene) cup and secures it with bone cement.

In the operating room, once the incision is made, the surgeon will use a resection guide to determine the appropriate amount of affected (arthritic) bone to remove from the humerus. In order to prepare the humeral canal for the stem, the surgical team uses various tools to create a space for the stem. After preparing the canal, the surgeon prepares the glenoid socket for the plastic component. The glenoid component looks similar to a concave dish that may have multiple posts or a central keel on the back (convex) side of the implant. The surgeon then attaches the component to the shoulder socket with bone cement.

Important information


ReUnion System Indications for Use:

For use as a Hemi or Total Shoulder Replacement: Aseptic necrosis of the humeral head; Painful, disabling joint disease of the shoulder resulting from: degenerative arthritis, rheumatoid arthritis or post traumatic arthritis; Proximal humeral fracture and/or dislocation; Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results; Revision of previous unsuccessful total shoulder replacement, resurfacing or other procedure.

Glenoid components are intended for cemented use only. The humeral stem components are intended for both cemented and cement less use. In the case of revision, when ReUnion TSA humeral stems are well fixed, the system is indicated for conversion to a total shoulder arthroplasty. In conjunction with ReUnion TSA humeral and glenoid components, if the natural glenoid provides sufficient bone stock, ReUnion TSA humeral stems can be converted from a hemiarthroplasty to a total shoulder arthroplasty, as well as revised from an existing total shoulder arthroplasty to a secondary total shoulder arthroplasty. It is also indicated for conversion to a hemiarthroplasty. In conjunction with ReUnion TSA humeral components, ReUnion TSA humeral stems can be converted from a total or ReUnion RSA reverse shoulder arthroplasty to a hemiarthroplasty, as well as revised from an existing hemiarthroplasty to a secondary hemiarthroplasty, in treatment of previously failed shoulder arthroplasty cases where revision to a reverse shoulder arthroplasty is inappropriate.

ReUnion Reverse Arthroplasty System (RSA): The ReUnion RSA Shoulder System is intended for primary, fracture, or revision of total Shoulder replacement. The patient’s joint must be anatomically and structurally suited to receive the selected implant(s), and a functional deltoid muscle is necessary to use the device. The patient’s joint must have gross rotator cuff deficiency, a functional deltoid muscle and be anatomically and structurally suited to receive the selected implant(s). Painful, disabling joint disease of the shoulder resulting from: degenerative arthritis or rheumatoid arthritis; Proximal humeral fracture; Revision of previously failed shoulder joint replacement; Glenoid Baseplate components are intended for cement less use with the addition of screw fixation; The Humeral Stem components are intended for both cemented and cement less use; In the case of revision, when ReUnion TSA humeral stems are well fixed, the system is indicated for conversion to a reverse shoulder arthroplasty.

In conjunction with ReUnion RSA humeral and glenoid components, ReUnion TSA humeral stems can be converted from a semi or total shoulder arthroplasty to a reverse shoulder arthroplasty, as well as revised from an existing reverse shoulder arthroplasty to a secondary reverse shoulder arthroplasty, in treatment of a grossly deficient rotator cuff with sever arthropathy or previously failed joint replacement with a grossly deficient rotator cuff. The patient must have a functional deltoid muscle, and be anatomically and structurally suited to receive the implant(s).

The ReUnion RFX System, when used with ReUnion TSA Humeral and Glenoid components, is indicated for use as a Hemi or Total Shoulder Replacement: Aseptic necrosis of the humeral head; Painful, disabling joint disease of the shoulder resulting from: degenerative arthritis, rheumatoid arthritis, or post traumatic Arthritis; Proximal humeral fractures and/or dislocation; Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results; Revision of previous unsuccessful total shoulder replacement, resurfacing or other procedure. In the case of revision, when ReUnion RFX humeral stems are well fixed, the system is indicated for conversion to a total shoulder arthroplasty. In conjunction with ReUnion TSA humeral and glenoid components, if the natural glenoid provides sufficient bone stock, ReUnion RFX humeral stems can be converted from a hemiarthroplasty to a total shoulder arthroplasty, as well as revised from an existing total shoulder arthroplasty to a secondary total shoulder arthroplasty. It is also indicated for conversion to a hemiarthroplasty. In conjunction with ReUnion TSA humeral components, ReUnion RFX humeral stems can be converted from a total or reverse shoulder arthroplasty to a hemiarthroplasty, as well as revised from an existing hemiarthroplasty to a secondary hemiarthroplasty, in treatment of previously failed shoulder arthroplasty cases where revision to a reverse shoulder arthroplasty is inappropriate. The glenoid components are intended for cemented use only. When used with ReUnion RSA Humeral and Glenoid Components.

The ReUnion RFX System, when used with ReUnion RSA humeral and glenoid components, is intended for primary, fracture, or revision total shoulder replacement. The patient’s joint must have gross rotator cuff deficiency, a functional deltoid muscle, and be anatomically and structurally suited to receive the implant(s). Painful, disabling joint disease of the shoulder resulting from degenerative arthritis or rheumatoid arthritis; Proximal humeral fractures; Revisions of previously failed shoulder joint replacements.

In the case of revision, when ReUnion RFX humeral stems are well fixed, the system is indicated for conversion to a reverse shoulder arthroplasty. In conjunction with ReUnion RSA humeral and glenoid components, ReUnion RFX humeral stems can be converted from a semi or total shoulder arthroplasty to a reverse shoulder arthroplasty, as well as revised from an existing reverse shoulder arthroplasty to a secondary reverse shoulder arthroplasty, in treatment of a grossly deficient rotator cuff with severe arthropathy or previously failed joint replacement with a grossly deficient rotator cuff. The patient must have a functional deltoid muscle, and be anatomically and structurally suited to receive the implant(s). Glenoid Baseplate components are intended for cement less use with the addition of screw fixation. Source: Stryker Instructions for Use K161863

The information presented is for educational purposes only. Stryker is not dispensing medical advice. Please speak to your doctor to decide which type of surgery is right for you. Only your doctor can make the medical judgment which products and treatments are right for your own individual condition. As with any surgery, joint replacement surgery carries certain risks. Your surgeon will explain all the possible complications of the surgery, as well as side effects. Additionally, the lifetime of a joint replacement product is not infinite and varies with each individual. Also, each patient will experience a different post-operative activity level, depending on their own individual clinical factors. Your doctor will help counsel you about how to best maintain your activities in order to potentially prolong the lifetime of the device.

Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: ReUnion, SmartLock, SOMA, Stryker, X3. All other trademarks are trademarks of their respective owners or holders.


RU-AWI-1_Rev-1, 02-2019

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