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Dive into the research topics where Mathieu Thaunat is active.

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Featured researches published by Mathieu Thaunat.


Archive | 2011

MPFL Reconstruction: Principles and Complications

Pieter J. Erasmus; Mathieu Thaunat

Medial patellofemoral ligament (MPFL) reconstructions have good results with few complications notwithstanding varied techniques used. Biomechanical and technical principles should be adhered to in preventing complications. The reconstructed MPFL should be tight in extension and lax in flexion. In cases of severe patella alta, a distalization of the tibial tubercle should be considered. With maximum quadriceps contraction the tension in the patellar tendon should be more than the tension in the reconstructed ligament. Drill holes in the patella should be through the medial rim preferably not exceeding 3.5 mm. Prominence of the reconstructed graft or fixation material over the medial condyle will lead to localized tenderness and is easily avoided by using non prominent fixation devices. There seems to be no progression in patellofemoral degeneration after MPFL reconstructions, in follow up periods of 7–12 years.


Archive | 2017

ACL and Hidden Meniscus Lesions

Bertrand Sonnery-Cottet; Benjamin Freychet; Nicolas Jan; F X Gunepin; Romain Seil; Mathieu Thaunat

ACL tears are frequently associated with meniscal lesions. Despite improvements in meniscal repair techniques, failure rates remain significant, especially for the posterior horn of the medial meniscus (MM). Therefore, we recommend that a systematic arthroscopic exploration of the posterior horn of the MM be performed. The first step of the arthroscopic exploration requires routine anterior visualization via a standard anterolateral portal. In the second step, the posterior horn of the MM is visualized posteriorly. For this, the scope is positioned deep in the notch underneath the posterior cruciate ligament (PCL) via the anterolateral portal. In the third step, the posterior horn is probed through an additional posteromedial portal. In 17 % of posterior horn MM tears, a tear was discovered through minimal debridement of a superficial soft-tissue layer with a motorized shaver. This type of lesion was called a “hidden lesion.” Suture repairs of these ramp or hidden lesions of the posterior horn of the MM were performed with the use of a suture hook, which was introduced through the posteromedial portal. These meniscal tears have good healing potential with a low rate of revision at an average of 2-year follow-up. It seems to be a promising technique because it allows the placement of vertically oriented sutures with good tissue approximation. The additional posteromedial portal allows for better visualization, easier access, and sufficient debridement prior to repair. In previous work it was demonstrated that repairing these lesions at the time of ACL reconstruction is very important in order to restore knee biomechanics and minimize stress on the ACL graft.


Archive | 2013

Reconstruction of the Medial Patellofemoral Ligament: Complications After Medial Patellofemoral Ligament Reconstruction

Pieter J. Erasmus; Mathieu Thaunat

Similar to other ligamentous reconstructions around the knee, medial patellofemoral ligament (MPFL) reconstructions can lead to complications. These complications relate to a lack of understanding of the biomechanics of the MPFL ligament and technical errors made during the reconstruction.


Revue De Chirurgie Orthopedique Et Reparatrice De L Appareil Moteur | 2007

172 L’anisométrie favorable : une technique originale pour la reconstruction du ligament patellofemoral médial

Mathieu Thaunat; Pieter J. Erasmus

Introduction Differentes techniques sont apparues recemment dans le but de reconstruire le ligament patellofemoral medial (LPFM) pour le traitement des luxations recidivantes de la rotule. Cependant il n’existe pas de consensus quant a la maniere de regler le positionnement femoral et la tension du greffon. Methodes 23 genoux (20 patients) operes d’une reconstruction du LPFM selon une technique originale entre 2002 et 2005 ont ete revus cliniquement a un recul moyen de 27 mois (+ /- 17). La technique chirurgicale comprenait une reconstruction isolee du LPFM par une autogreffe (double tendon gracilis) fixe au femur par une ancre et au niveau de la rotule par des tunnels osseux. Le positionnement femoral etait volontairement distal par rapport a l’insertion anatomique du LPFM de facon a obtenir une greffe tendu dans les 30 premiers degres de flexion du genou et qui de detend au dela. La tension de la greffe etait realisee le genou en extension apres mise en tension du tendon rotulien a l’aide d’un crochet a os. Resultats L’âge moyen des patients etait de 22 ans (+ /- 5). Le score de Kujala moyen au dernier recul etait de 93 (+ /- 6). Aucun patient ne presentait d’apprehension. Aucun patient n’a presente de recidive de luxation. Le deficit d’extension actif moyen etait de 4 (+ /- 5) a 6 semaines. au dernier recul seule une patiente presentait un deficit dgextension actif de 10. Le score de Kujala moyen etait plus faible dans le groupe rotule haute (Indice de Bernageau > 6 mm), dans le groupe trochlee dysplasique (Saillie de la trochlee > 4 mm) et dans le groupe lesion femoro patellaire constatee lors de l’arthroscopie realisee avant la chirurgie. Cependant aucune difference n’etait statistiquement significative. Discussion Cette technique originale de reconstruction du LPFM donne des resultats comparables aux autres techniques decrites en terme de resultat fonctionnel. Le positionnement distal de l’attache femorale permet d’eviter les douleurs anterieures et limitations en flexion dues a une greffe trop tendue en flexion ou a un mauvais positionement de l’attache femorale. En revanche le risque est d’obtenir une greffe trop tendue en extension en particulier en cas de rotule haute ce qui parfois peut entrainer un deficit d’extension actif lorsque la tension dans le LPFM devient superieure a celle dans le tendon rotulien.


Knee | 2007

The favourable anisometry: An original concept for medial patellofemoral ligament reconstruction

Mathieu Thaunat; Pieter J. Erasmus


Knee | 2006

Tibial plateau fracture after anterior cruciate ligament reconstruction: Role of the interference screw resorption in the stress riser effect

Mathieu Thaunat; Geoffroy Nourissat; Pascal Gaudin; Philippe Beaufils


Revue De Chirurgie Orthopedique Et Reparatrice De L Appareil Moteur | 2007

50 Reconstruction du ligament patello femoral médial dans les luxations récidivantes de rotule : influence des facteurs anatomiques sur le résultat fonctionnel

Mathieu Thaunat; E. Dillon; Pieter J. Erasmus


Archive | 2016

Extensiondeficit after ACL reconstruction: Isopen posteriorreleasea safe and efficient procedure?☆

Nicolas Tardy; Mathieu Thaunat; Bertrand Sonnery-Cottet; Colin G. Murphy; Pierre Chambat; Jean-Marie Fayard


22nd Congress of the European Society of Biomechanics | 2016

DYNAMIC ISOKINETIC PROFILE IN FEMALES WITH AND WITHOUT PATELLOFEMORAL PAIN SYNDROME AFTER ACL RECONSTRUCTION

Gregory Vigne; Damien Monnot; Meven Le Guen; Bertrand Sonnery-Cottet; Mathieu Thaunat; Jean-Marie Fayard; Isabelle Rogowski


Archive | 2013

Ancillary assessment of angular changes during tibial osteotomy

Eugenie David; Roy Elsa Le; Philippe Beaufils; Pierre Chambat; Jean Marie Fayard; Nicolas Pujol; Bertrand Sonnery-Cottet; Mathieu Thaunat

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E. Dillon

Stellenbosch University

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Romain Seil

Centre Hospitalier de Luxembourg

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