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Dive into the research topics where Maria Grazia Benedetti is active.

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Featured researches published by Maria Grazia Benedetti.


Journal of the American Podiatric Medical Association | 2006

Gait analysis with an integrated system for functional assessment of talocalcaneal coalition.

Claudia Giacomozzi; Maria Grazia Benedetti; Alberto Leardini; Velio Macellari; Sandro Giannini

There is little knowledge of the functional performance of patients with talocalcaneal coalition because of the marginal quantitative information accessible using current motion-analysis and plantar pressure-measurement techniques. A novel system was developed for comprehensively measuring foot-floor interaction during the stance phase of gait that integrates instrumentation for simultaneously measuring bony segment position, ground reaction force, and plantar pressure with synchronization of spatial and temporal variables. An advanced anatomically based analysis of foot joint rotations was also applied. Tracking of numerous anatomical landmarks allowed accurate selection of three footprint subareas and reliable estimation of relevant local forces and moments. Eight patients (11 feet) with talocalcaneal coalition were analyzed. Major impairment of the rearfoot was found in nonsurgical patients, with an everted attitude, limited plantarflexion, and overloading in all three components of ground reaction force. Surgical patients showed more normal loading patterns in each footprint subarea. This measuring system allowed for accurate inspection of the effects of surgical treatment in the entire foot and at several footprint subareas. Surgical treatment of talocalcaneal coalition seems to be effective in restoring more physiologic subtalar and forefoot motion and loading patterns.


International Orthopaedics | 2007

Total knee replacement versus osteochondral allograft in proximal tibia bone tumours

Marco Colangeli; Davide Donati; Maria Grazia Benedetti; Fabio Catani; Enrico Gozzi; E. Montanari; Sandro Giannini

Total knee modular megaprosthesis or osteochondral allograft are used to preserve joint movement in bone tumours of the proximal tibia. The aim of this study was to compare two groups of patients with total knee modular megaprosthesis and osteochondral allograft through an objective analysis. Eighteen patients, ten treated with prosthesis (TKR group) and eight with osteochondral allografts (AL group), were included in the study. X-ray, muscular strength measurements, and studies of gait analysis including electromyography (EMG) were used to compare functional results of patients. In the TKR group a higher incidence of knee extension lag was found. While the TKR group had a prevalent knee stiff/hyperextension pattern with reduced rectus femoris activity, the AL group had a higher percentage of normal knee pattern. Knee extensor muscular strength was reduced in the TKR group. TKR functional performance during gait is in most cases abnormal, consistent with the weakness of the extensor apparatus and knee extension lag. Although a greater rate of normal walking was found in the AL group, problems related to a short patellar tendon, knee instability, and joint mismatching were considered to be responsible for abnormal knee kinematics. An allograft, when optimal reconstruction is performed, gives better functional results.RésuméLes prothèses totales massives et les allogreffes ostéochondrales sont utilisées pour préserver le mouvement articulaire dans les tumeurs du tibia proximal. Le but de cette étude était de comparer 2 groupes de patients ayant reçus ces traitements. 18 patients étaient inclus dans l’étude, 10 traités par prothèse (groupe TKR) et 8 par allogreffe ostéochondrale (groupe AL). Les radiographies, la mesure de la force musculaire, l’étude de la boiterie incluant l’EMG étaient utilisées pour comparer les résultats fonctionnels. Dans le groupe TKR une plus grande incidence de perte d’extension était notée. Tandis que le groupe TKR avait une réduction de l’activité du Rectus fémorus , le groupe AL avait un plus grand pourcentage de fonction normale. La force musculaire des extenseurs était réduite dans le groupe TKR. La performance fonctionnelle durant la marche des TKR étaient la plupart du temps anormal avec faiblesse de l’appareil extenseur et perte d’extension. Bien qu’un taux plus élevé de marche normale était trouvé dans le groupe AL, les problèmes dû à un tendon rotulien court, une instabilité articulaire et à une articulation mal adaptée étaient supposés responsable d’une cinématique anormale du genou. L’allogreffe, quand une reconstruction optimale était réalisée donnait un meolleur résultat fonctionnel.


Revue De Chirurgie Orthopedique Et Reparatrice De L Appareil Moteur | 2004

Étude de la marche après ostéoplastie de retournement pour tumeur maligne de l’extrémité proximale du fémur

Davide Donati; Maria Grazia Benedetti; Fabio Catani; Lisa Berti; R. Capanna

Resume L’osteoplastie de retournement de la hanche est une technique chirurgicale particuliere utilisee dans le traitement des tumeurs malignes de la partie proximale du femur. Nous presentons ici un cas, etudie au moyen d’une analyse de la marche avant et apres un programme de rehabilitation de la marche. L’evaluation des amplitudes articulaires et des moments cinetiques de l’articulation ainsi que l’electromyographie nous ont permis de documenter l’adaptation progressive des fonctions musculaires et articulaires a leur nouveau role developpe dans les schemas moteurs, demontrant l’efficacite exceptionnelle de l’osteoplastie de retournement. La possibilite de disposer d’un controle actif sur deux points d’appui dans le membre inferieur, la pseudo-hanche en proximal et le pseudo-genou en position intermediaire, rend ce type d’operation extremement avantageux en comparaison avec les techniques alternatives de desarticulation de la hanche ou d’hemipelvectomie. L’absence totale de douleur jointe a la preservation de la proprioception articulaire et cutanee fait de cette operation, lorsqu’elle est possible, une bonne solution dans le traitement des tumeurs malignes de la partie proximale du femur.


Gait & Posture | 2007

Rear-foot, mid-foot and fore-foot motion during the stance phase of gait.

A. Leardini; Maria Grazia Benedetti; Lisa Berti; D. Bettinelli; R. Nativo; Sandro Giannini


Clinical Biomechanics | 2006

Clinical and biomechanical assessment of patella resurfacing in total knee arthroplasty

Lisa Berti; Maria Grazia Benedetti; Andrea Ensini; Fabio Catani; Sandro Giannini


Gait & Posture | 2006

Identification and characterisation of heel strike transient.

Federica Verdini; M. Marcucci; Maria Grazia Benedetti; Tommaso Leo


Clinical Biomechanics | 2006

A new software tool for 3D motion analyses of the musculo-skeletal system.

A. Leardini; Claudio Belvedere; L. Astolfi; S. Fantozzi; Marco Viceconti; Fulvia Taddei; Andrea Ensini; Maria Grazia Benedetti; Fabio Catani


Computer Methods and Programs in Biomedicine | 2005

Advanced multimodal visualisation of clinical gait and fluoroscopy analyses in the assessment of total knee replacement

Alberto Leardini; L. Astolfi; Silvia Fantozzi; Marco Viceconti; Maria Grazia Benedetti; Fabio Catani


Archives of Physical Medicine and Rehabilitation | 2006

Gait Performance in an Original Biologic Reconstruction of Proximal Femur in a Skeletally Immature Child: A Case Report

Maria Grazia Benedetti; Sofia Straudi; Lisa Berti; Alberto Leardini; M. Manfrini


Gait & Posture | 2011

Use of a novel graphical representation in gait analysis for trunk kinematics

F. Biagi; A. Merlo; Maria Grazia Benedetti; L. Berti; Alberto Leardini

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Fabio Catani

University of Modena and Reggio Emilia

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Claudia Giacomozzi

Istituto Superiore di Sanità

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Federica Verdini

Marche Polytechnic University

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M. Marcucci

Marche Polytechnic University

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