Vastus Micromedialis Essay
Vastus Medialis
Gross Morphology
The vastus medialis (VM) is a muscle situated in anteromedial aspect of the thigh. It forms quadriceps femoris muscle by the three distinctive portion, the rectus femoris, vastus lateralis and vastus intermedius (Palastanga and Soames 2012). The Vastus medialis has been termed as being composed of two separate division: the vastus medialis longus proximally, and the vastus medialis oblique distally (Hubbard et al 1997).
The vastus medialis (VM) origin form a line starting at the inferior medial end of the intertrochanteric line, running inferior around the medial aspect of the upper end of the shaft on the spiral line, the linea aspera, located on the posterior surface of the femur, and extends on to the uppor third of the supracondylar line, the medial intrermuscular septum. The vastus medialis fibres orientated differently upper fibres pass primarly downwards and lower fibres tend to pass almost horizontally and laterally (Palastanga and Soames 2012). It goes from back to front covering femur and it shows widespread development of fivers that sub divide into two “heads” the superior head forms the longitudinal portion of the muscle called VM longus and the inferior head originate from …show more content…
As noted by Sheehan et at (2012), previous cadaver and EMG studies shown VM plays significant role in medial stabilizing the patella. The two head of the VM provided different stability of the patella. The VM longus contributes to knee extension, and VM oblique provide medial stabilization of patella during knee extension (Hubbard et al 1997). VMO provide greater stability of the patella compare to VML in knee extension in the particular individual, due to the angular orientation of the VMO muscle fibre (Nozic et al
Gross Morphology
The vastus medialis (VM) is a muscle situated in anteromedial aspect of the thigh. It forms quadriceps femoris muscle by the three distinctive portion, the rectus femoris, vastus lateralis and vastus intermedius (Palastanga and Soames 2012). The Vastus medialis has been termed as being composed of two separate division: the vastus medialis longus proximally, and the vastus medialis oblique distally (Hubbard et al 1997).
The vastus medialis (VM) origin form a line starting at the inferior medial end of the intertrochanteric line, running inferior around the medial aspect of the upper end of the shaft on the spiral line, the linea aspera, located on the posterior surface of the femur, and extends on to the uppor third of the supracondylar line, the medial intrermuscular septum. The vastus medialis fibres orientated differently upper fibres pass primarly downwards and lower fibres tend to pass almost horizontally and laterally (Palastanga and Soames 2012). It goes from back to front covering femur and it shows widespread development of fivers that sub divide into two “heads” the superior head forms the longitudinal portion of the muscle called VM longus and the inferior head originate from …show more content…
As noted by Sheehan et at (2012), previous cadaver and EMG studies shown VM plays significant role in medial stabilizing the patella. The two head of the VM provided different stability of the patella. The VM longus contributes to knee extension, and VM oblique provide medial stabilization of patella during knee extension (Hubbard et al 1997). VMO provide greater stability of the patella compare to VML in knee extension in the particular individual, due to the angular orientation of the VMO muscle fibre (Nozic et al