Nine-year outcome after anatomic stemless shoulder prosthesis: clinical and radiologic results

26.04.2017, 16:00 UhrATOS Klinik München

Autoren: N. Hawi, MD, P. Magosch, MD,
M. Tauber, MD, S. Lichtenberg, MD,
P. Habermeyer, MD

The surgical treatment option for severe glenohumeral arthritis is shoulder arthroplasty, resulting in loss of pain and improvement of shoulder function. As a result of complications caused by the stemmed implant design, such as bone stock loss, intraoperative and postoperative periprosthetic fractures, malpositioning of the humeral implant, especially in post-traumatic cases with malalignment, and an altered center of rotation, the development of new concepts has been necessary. To provide the advantages of 3-dimensional reconstruction of the humeral head and avoid stem-related complications, Biomet, Inc. (Warsaw IN, USA) introduced a stemless prosthesis, the Total Evolutive Shoulder System (TESS), in 2004. The second stemless design available was the Eclipse shoulder prosthesis (Arthrex, Inc., Naples, FL, USA) and first introduced in 2005. In contrast to other implants, the Eclipse prosthesis offers epiphyseal and metaphyseal anchoring and is inserted over a compression screw for primary stability of the implant. A number of different stemless implants are currently available on the market. However, all types of prostheses aim to reconstruct the humeral center of rotation independent from the shaft axis and to avoid additional osteotomy of greater tuberosity in post-traumatic cases. Short- and midterm outcomes available in the literature offer very promising clinical and radiologic results. Nevertheless, studies with longer followup are needed to definitively prove the benefits of this kind of implant. Here, we present clinical and radiologic results obtained 9 years after implanting the Eclipse stemless anatomic shoulder prosthesis. In 2015 we published our results after stemless shoulder arthroplasty with a follow-up of 72 months. The analyzed data and presented results of the current study may involve the same patient cohort, but all patients were evaluated at a different follow-up time.

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