Femoral osteochondroma presenting with rupture of vastus medialis muscle

The medial collateral ligament (MCL) is one of the most injured ligaments during sport activities. The resulting joint damage effects on neuromuscular system remain unclear. Thus this study was designed to assess the changes in neuromuscular properties of vastus medialis muscle after MCL transection. Complete rupture of MCL was performed on rats, and dynamic functional assessment during locomotion was achieved before and once a week from 1–5 wk postlesion. Twitch properties and metabo- and mechanosensitive afferent fiber responses to specific stimuli were measured 1, 3, and 5 wk after MCL transection. Results indicated that maximum knee angle measured during the stance phase of the gait cycle was decreased during 3 wk after MCL injury and then recovered. Minimum knee angle measured during the stance phase was decreased during 2 wk and showed compensatory effects at week 5. A stepwise decrease in maximum relaxation rate-to-amplitude ratio concomitant with a stepwise increase in half-relaxation time were observed following MCL injury. Variations in metabosensitive afferent response to chemical (KCl and lactic acid) injections were decreased at week 1 and recovered progressively from week 3 to week 5 postlesion. Recovery of the mechanosensitive afferent response to vibrations was not totally complete after 5 wk. Our data indicate that alteration of the sensory pathways from the vastus medialis muscle could be considered as a source of neuromuscular deficits following MCL transection. Our results should be helpful in clinical purpose to improve the knowledge of the influence exerted by ligament rupture on the motor system and permit development of rehabilitation protocols and exercises more appropriate for recovery of functional stability.

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Activation level of vastus medialis muscle in different rehabilitation exercises

Acta Fisiátrica ◽

10.5935/0104-7795.20160025 ◽

2016 ◽

Vol 23 (3) ◽

Author(s):

Andressa Dupont Birck ◽

Jonnas da Fontoura Zaleski ◽

Rodrigo de Azevedo Franke ◽

Cláudia Silveira Lima

Keyword(s):

Vastus Medialis ◽

Activation Level ◽

Vastus Medialis Muscle ◽

Rehabilitation Exercises

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Quantitative and qualitative MR-imaging assessment of vastus medialis muscle volume loss in asymptomatic patients after anterior cruciate ligament reconstruction

Journal of Magnetic Resonance Imaging ◽

10.1002/jmri.24777 ◽

2014 ◽

Vol 42 (2) ◽

pp. 515-525 ◽

Cited By ~ 11

Author(s):

Magda Marcon ◽

Bernhard Ciritsis ◽

Christoph Laux ◽

Daniel Nanz ◽

Michael A. Fischer ◽

...

Keyword(s):

Anterior Cruciate Ligament ◽

Mr Imaging ◽

Ligament Reconstruction ◽

Cruciate Ligament ◽

Vastus Medialis ◽

Volume Loss ◽

Cruciate Ligament Reconstruction ◽

Asymptomatic Patients ◽

Vastus Medialis Muscle ◽

Anterior Cruciate

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Anatomical basis of the role of vastus medialis muscle in femoro-patellar degenerative arthropathy

Surgical and Radiologic Anatomy ◽

10.1007/bf01629491 ◽

1995 ◽

Vol 17 (1) ◽

pp. 7-11 ◽

Cited By ~ 8

Author(s):

B. Galtier ◽

M Buillot ◽

G Vanneuville

Keyword(s):

Vastus Medialis ◽

Anatomical Basis ◽

Vastus Medialis Muscle

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Clinical Study on Safety, Clinical Indicators of Polydioxanone Sutures Inserted into Vastus Medialis Muscle in Degenerative Knee Osteoarthritis

Clinical Pain ◽

10.35827/cp.2021.20.2.105 ◽

2021 ◽

Vol 20 (2) ◽

pp. 105-121

Author(s):

Ki-Choul Kim ◽

Hyung-Jun Lee ◽

Kil-Yong Lee ◽

Hee-Gon Park

Keyword(s):

Clinical Study ◽

Knee Osteoarthritis ◽

Vastus Medialis ◽

Clinical Indicators ◽

Vastus Medialis Muscle

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The role of the quadriceps muscle in knee extension

South African Journal of Physiotherapy ◽

10.4102/sajp.v39i1.902 ◽

1983 ◽

Vol 39 (1) ◽

pp. 13-14 ◽

Cited By ~ 1

Author(s):

Ellis S. Janks

Keyword(s):

Quadriceps Muscle ◽

Knee Extension ◽

Vastus Medialis ◽

Vastus Medialis Muscle

In 1949, Smillie proposed that the vastus medialis muscle alone is responsible for the final 10° to 15° of knee extension. A number of more recent studies have proved that the whole quadriceps muscle is responsible for all degrees of knee extension. This evidence is reviewed and the function of the two subdivisions of the vastus medialis is discussed.

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