What is primary total shoulder arthroplasty?
Primary total shoulder arthroplasty
Orthopaedic surgeons perform primary 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.
Stryker offers multiple solutions for primary total shoulder replacement. Stryker designed the ReUnion TSA and Tornier Simpliciti shoulder replacement systems to address some of the most common arthritic disorders affecting the shoulder.
With a primary 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.
Learn more about implant solutions
Shoulder replacement
Anatomic total shoulder joint replacement is intended for use in individuals with painful, disabling joint disease of the shoulder resulting from: degenerative arthritis, rheumatoid arthritis or post-traumatic arthritis. Additional indications could include but not limited to: aseptic necrosis of the humeral head, proximal humeral fracture and revision of previous unsuccessful hemiarthroplasty or other procedures.
Reverse total shoulder joint replacement is intended for use in individuals with a functional deltoid muscle and with massive and non-repairable rotator cuff tear with pain disabled by: rheumatoid arthritis, non-inflammatory degenerative joint disease, humeral head fracture, traumatic arthritis and revision of devices if adequate bone stock remains.
Shoulder joint replacement surgery is not appropriate for patients with any active or suspected latent infection in or about the shoulder joint, any mental or neuromuscular disorder which would create an unacceptable risk of prosthesis in stability, prosthesis fixation failure or complications in postoperative care. Additionally, shoulder joint replacement surgery is not appropriate for patients whose anticipated activities would impose high stresses on the prosthesis and its fixation.
As with any surgery, shoulder joint replacement surgery has serious risks which include, but are not limited to, pain, infection, intraoperative complications, component wear, nerve damage, loosening of shoulder components and dislocation of the shoulder prosthesis.
Implant related risks which may lead to a revision or removal of the implant include being overweight, manual labor activities, some sports activities, patient age, activity level, medical conditions, alcohol or drug addiction, and mental disorders. Shoulder joint implants may not provide the same feel or performance characteristics experienced with a normal healthy joint
The information presented is for educational purposes only. Speak to your doctor to decide if joint replacement surgery is appropriate for you. Individual results vary and not all patients will return to the same activity level. The lifetime of any joint replacement is limited and depends on several factors like patient weight and activity level. Your doctor will counsel you about strategies to potentially prolong the lifetime of the device, including avoiding high-impact activities, as well as maintaining a healthy weight. It is important to closely follow your doctor’s instructions regarding post-surgery activity, treatment, and follow-up care. Ask your doctor if a joint replacement is right for you.
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OT-AWI-53 Oct-2023