The Trammpolin® meniscus prosthesis is an anatomically shaped, non-biodegradable polymer implant designed to mimic the function of the natural medial meniscus by functioning as a shock absorber within the knee joint. The Trammpolin® meniscus prosthesis is implanted by an arthroscopic procedure with a specific surgical instrument set to determine correct meniscus prosthesis size and facilitate proper placement of the meniscus prosthesis with fixation screws.
This procedure is intended for people between 30-65 years of age with persistent knee pain in the medial compartment, who underwent a meniscectomy more than 6 months ago. In addition, patients have limited cartilage damage (grade IV modified Outerbridge scale) and a nearly straight leg axis. For a complete set of inclusion/exclusion criteria of the ongoing clinical study (AIR study), see the study registered at ClinicalTrials.gov under number NCT03696836
If a patient meets these criteria and would like to participate in this study, you can refer the patient to your colleague orthopedists at the participating centers in the AIR-study: Radboudumc and the Sint Maartenskliniek in Nijmegen and Maastricht UMC+ by reference of "Potential candidate for AIR study Trammpolin".
In addition to the ongoing clinical study, the Trammpolin® meniscus prosthesis has been extensively studied throughout its design and development. Below is a selection of publications on pre-clinical research.
Vrancken ACT, Hannink G, Madej W, Verdonschot N, van Tienen TG, Buma P. In Vivo Performance of a Novel, Anatomically Shaped, Total Meniscal Prosthesis Made of Polycarbonate Urethane: A 12-Month Evaluation in Goats. Am J Sports Med. 2017 Oct;45(12):2824-2834.
Vrancken ACT, Eggermont F, van Tienen TG, Hannink G, Buma P, Janssen D, Verdonschot N; Functional biomechanical performance of a novel anatomically shaped polycarbonate urethane total meniscus replacement; Knee Surgery, Sports Traumatology, Arthroscopy (2016), 24:1485-1494
Khoshgoftar M, Vrancken ACT, Janssen D, van Tienen TG, Buma P, Verdonschot N; The sensitivity of cartilage contact pressures in the knee joint to the size and shape of an anatomically shaped meniscal implant; Journal of Biomechanics (2015), 48(8):1427-1435
Vrancken ACT, Madej W, Hannink G, Verdonschot N, van Tienen TG, Buma P; Short term evaluation of an anatomically shaped polycarbonate urethane total meniscus replacement in a goat model; PloS One (2015), 10(7):e0133138
Vrancken ACT, Crijns SPM, Ploegmakers MJ, O’Kane C, van Tienen TG, Janssen D, Buma P, Verdonschot N; 3D geometry analysis of the medial meniscus – a statistical shape modelling approach; Journal of Anatomy (2014), 225(4):395-402
Vrancken ACT, van Tienen TG, Hannink G, Janssen D, Verdonschot N, Buma P; Releasing the circumferential fixation of the medial meniscus does not influence its kinematics; The Knee (2014), 21:1033-1038