In the current patient, even the muscles around the gluteus medius muscle had fat infiltration on MRI, speculating to be not so strong against overwork (Figure 2).
Caption: FIGURE 1: Initial MRI of the hip: (a and b) coronal Tl-weighted and axial T2-weighted images showing inhomogeneous fatty signal changes in the gluteus medius muscle and (c) coronal STIR image showing apparent high signal lesions in both the gluteus medius and minimus muscles and slightly high signal lesions in both the femoral head and the acetabular bone with the joint effusion.
Caption: FIGURE 2: MRI of the hip taken 10 months after the starting of treatment: (a) coronal T1-weighted image showing low signal osteoarthritis change and (a and b) coronal T1-weighted and axial T2-weighted images showing homogeneous fatty signal changes in the gluteus medius muscle and similar appearance even in the other muscles (arrows).
Caption: FIGURE 3: Intraoperative photograph showing yellowish gluteus medius muscle (arrow), which had flaccid tone.
Asymmetry of stiffness of lumbar erector spinae after physiotherapy exercises decreased as well 45% while lying and 54% while standing; however, it was lesser than that of gluteus medius muscles.
Asymmetry of tone of gluteus medius muscles under the impact of physiotherapy decreased to 80% in a lying position and 74% while standing.
Exercises of physiotherapy on the therapeutic ball imitating horseman's movements decrease asymmetry of stiffness and tone of gluteus medius muscles in children with and without CP and only partially decrease asymmetry of stiffness and tone of their lumbar erector spinae.
Two muscle biopsies were taken, one before (resting) and another after 10 months of light physical activity, when fragments of the left gluteus medius muscle were taken at depths of first 20mm and then 60mm.
For both the NADH-TR and the mATPase assay, two semi-serial cross sectional samples of 12 [micro]m thickness were obtained from the gluteus medius muscle using a cryostatd at -20 [degrees]C.
Yet, there are no reports on the typing and morphometry of muscle fibers in BH horses regarding the effect of training or any physical activity, which makes this work one of the first showing that even a period of 10 months of light physical activity is capable of producing changes in the gluteus medius muscle fiber distribution in BH horses.
These authors also observed that the deep parts of the gluteus medius muscle have greater aerobic pattern and a greater percentage of oxidative type I fibers, a finding that was not observed in the present study, although a greater number of type IIA fibers, also oxidative, was found at a depth of 60mm.
The rectus femoris and gluteus medius muscles
are then retracted to expose the anterior hip capsule.