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Promising preliminary results seen with last generation wrist arthroplasty implant

Issue: October 2012

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CHICAGO — In a prospective multicenter study using a web-based database, French researchers found good, preliminary results with a last generation total wrist arthroplasty implant.

“The last generation total wrist arthroplasty we used seems to provide a major breakthrough, in the field even for selected non-rheumatoid patients,” Guillaume Herzberg, MD, PhD, said during his presentation at the American Society for Surgery of the Hand 2012 Meeting, here. “However these preliminary results will have to be concurrent at a longer follow-up.”

 

Guillaume Herzberg

Herzberg and colleagues compared the results of 129 patients with rheumatoid arthritis (RA) and 86 patients without rheumatoid arthritis who underwent total wrist arthroplasty using the Re-motion total wrist system (Small Bone Innovations Inc.). Patients had an average age of 63 years and were followed at 6 weeks, 6 months and every year after the operation. The average follow-up was 2 years.

The average postoperative visual analog scale score for patients in the RA group was 48 points and 20 points for the non-RA group. Quick-DASH scores were 54 points for patients in the RA group and 21 points for the non-RA cohort. Postoperative arc of flexion-extension was 58° in the RA group and 73° in the non-RA group. Grip strength improved 40% in the RA group and 19% in the non-RA group.  The researchers found that periprosthetic osteolysis was 12% in the RA group and 18% in the non-RA group.

The results showed that 5% of the patients in the RA group had complications that required revision vs. 6% of non-RA group. Both groups had a survival rate of 92% for revision at maximum follow-up.

“If we consider the old generation arthroplasties, our results with the Re-motion implant are definitely better,” Herzberg said.

Reference:

Herzberg G, Boeckstyns MEH. Prospective international multi-centre series of 215 last generation total wrist arthroplasties: Preliminary results. Paper #1. Presented at The American Society for Surgery of the Hand 2012 Meeting. Sept. 6-8. Chicago.

Disclosure:  Herzberg has no relevant financial disclosures.