Preliminary Results From the Metis-Newdeal® Total Metatarsophalangeal Prosthesis

Abstract

Objective: To evaluate the preliminary results from the METIS-Newdeal® metatarsophalangeal prosthesis for treating hallux rigidus grade III/IV. Methods: This was a prospective study on eight metatarsophalangeal prostheses that were placed in six patients between November 2007 and July 2009. The patients' mean age was 55 years and the mean follow-up after the surgery was 50 weeks. The results were evaluated using the AOFAS-MTP score and x-ray images as controls. Results: The AOFAS-MTP score increased significantly from 42p before the surgery to 82p after the surgery (↑ 1.95x), mainly due to improvement in the functional level. No intercurrences were identified radiologically. Among the five patients who underwent operations, only one expressed dissatisfaction with the surgery: this was expressed after early infection appeared at the surgical site, and it was the only postoperative complication found. Conclusion: Total metatarsophalangeal arthroplasty using METIS-Newdeal® presented promising short-term results. However, evaluations on a larger number of cases with a longer follow-up are needed in order to draw more consistent conclusions.

The metatarsosesamoid joint: An in vitro 3D quantitative assessment

“…It is a modular two-component press-fit titanium alloy implant with two flanges for the sesamoids along the plantar aspect of the metatarsal head component. Currently, there are two small, short-term follow-up studies that do not include a control arm that evaluate the outcomes of this implant; initial results seem promising [27,28]. Long-term results for this prosthesis are required.…”

Artrodese versus artroplastia da primeira articulação metatarsofalângica no tratamento do hallux rigidus – Estudo comparativo de pacientes selecionados apropriadamente

“…A preliminary report of these results has been published previously. 17 After surgery, all of the patients underwent thromboprophylaxis. The suture material was removed 15 days after surgery.…”