Studies Suggest Catalyst CSR Total Shoulder Outperforms Traditional Stemmed Implants

Studies suggest achievement of positive clinical outcomes using Catalyst OrthoScience’s Catalyst CSR total shoulder system, compared to standard stemmed total shoulder joint replacement.

The study tested and compared early postoperative range of motion (ROM) and restoration of radiographic center of rotation (COR) using the Catalyst anatomic shoulder system and standard stemmed shoulders.

The results demonstrate that patients who received the Catalyst anatomic shoulder replacement achieved better ROM at six and 12 weeks, and improved restoration of the radiographic COR when compared to patients who received a standard stemmed model with a spherical humeral head.

This study was a retrospective review of 50 consecutive primary patients by a single surgeon. Data was collected at six weeks, 12 weeks, six months and 12 months postoperative on patients who received 25 stemmed implants from DePuy Synthes, Stryker (Wright Medical), LimaCorporate and Zimmer Biomet and 25 Catalyst anatomic implants.

In the Catalyst group, 95% of patients had a change in COR <3mm vs. only 60% in the stemmed group, indicating that the multiplanar osteotomy and ellipsoid anatomic head result in more consistent reproduction of the humeral head anatomy, supporting better ROM.

“Faster recoveries can be attributed to a combination of several factors working in unison,” said Carl O’Connell, CEO and president of Catalyst. “A more anatomically shaped, ellipsoid humeral head design better mimics the patient’s natural anatomy. Our precision multiplanar osteotomy instrumentation removes a minimal amount of bone and consistently allows for better restoration of the native humeral joint line. And patented, oblique glenoid instruments allow for the glenoid to be prepared with less muscle retraction than a traditional perpendicular approach.”

Source: Catalyst OrthoScience