Volume 45, Issue 5 pp. 705-712
Research Article

Experimental muscle injury: Correlation between ultrasound and histological findings

Fernando JimÉnez-Díaz MD, PhD

Fernando JimÉnez-Díaz MD, PhD

Laboratory of Performance and Sports Readaptation, Faculty of Sport Sciences, University of Castilla-La Mancha, Spain

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Ignacio Jimena MD, PhD

Ignacio Jimena MD, PhD

Department of Morphological Sciences, Histology Section, Faculty of Medicine, University of Córdoba, Maimónides Institute for Biomedical Research, Avenida Menéndez Pidal s/n, Córdoba 14071, Spain

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Evelio Luque MD, PhD

Evelio Luque MD, PhD

Department of Morphological Sciences, Histology Section, Faculty of Medicine, University of Córdoba, Maimónides Institute for Biomedical Research, Avenida Menéndez Pidal s/n, Córdoba 14071, Spain

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Susana MendizÁbal PhD

Susana MendizÁbal PhD

Laboratory of Performance and Sports Readaptation, Faculty of Sport Sciences, University of Castilla-La Mancha, Spain

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Antonio Bouffard MD

Antonio Bouffard MD

Detroit Medical Center, Sports Medicine Institute, Detroit, Michigan, USA

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Luis JimÉnez-Reina MD, PhD

Luis JimÉnez-Reina MD, PhD

Department of Morphological Sciences, Histology Section, Faculty of Medicine, University of Córdoba, Maimónides Institute for Biomedical Research, Avenida Menéndez Pidal s/n, Córdoba 14071, Spain

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JosÉ PeÑa MD, PhD

Corresponding Author

JosÉ PeÑa MD, PhD

Department of Morphological Sciences, Histology Section, Faculty of Medicine, University of Córdoba, Maimónides Institute for Biomedical Research, Avenida Menéndez Pidal s/n, Córdoba 14071, Spain

Department of Morphological Sciences, Histology Section, Faculty of Medicine, University of Córdoba, Maimónides Institute for Biomedical Research, Avenida Menéndez Pidal s/n, Córdoba 14071, SpainSearch for more papers by this author
First published: 18 November 2011
Citations: 14

Abstract

Introduction:

In this study we correlated ultrasound findings with histological changes taking place during experimentally induced degeneration–regeneration in rat skeletal muscle.

Methods:

Gastrocnemius muscles were injected with mepivacaine, and the progress of the muscle injury was monitored by ultrasound from day 1 to day 20. Muscles were extracted on the same days for histological examination.

Results:

The degenerative phase was characterized by increased echogenicity in the injured area; thereafter, echogenicity gradually diminished during the regenerative phase, attaining normal levels by 20 days postinjection. By this stage, histological examination revealed that regeneration was complete. The heteroechoic texture observed from day 4 to day 10 appeared to reflect the coexistence of degenerative and regenerative processes.

Conclusions:

The results suggest that the degenerative and regenerative phases of muscle injury may be distinguished sonographically through differences in echogenicity and echotexture and, using Doppler ultrasound, differences in the degree of vascularization. Muscle Nerve, 2012

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