Gluteus Minimus

From the lateral surface of the ilium, between the anterior and inferior gluteal line. 

Insert electrode midway between midpoint of the iliac crest (1C) and greater trochanter (GT) deep to bone and withdraw slightly. 

If the electrode is inserted too superficially it will be in the gluteus medius. 

Obturator Interims and Superior Gemellus Obturator Intemus Nerve, Sacral Plexus, L5, SI, S2. 

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Fig. 12.15a,b. Tensor fasciae latae muscle. Sagittal 12-5 MHz US images obtained in a healthy subject over the proximal (a) and distal (b) insertion of the tensor fasciae latae muscle (Tfl). a The proximal tendon (arrow) of the tensor fasciae latae muscle can be appreciated as it inserts into the anterior superior iliac spine (ASIS). In the same plane, the belly of the gluteus minimus (GMi) is seen deeply to the tensor fasciae latae muscle. In b, the distal myotendinous junction of the tensor fasciae latae muscle (Tfl) exhibits a typical pointed appearance as a result of the convergence of its muscle fibers into the fasciae latae (arrowheads). At this level, the muscle belly of the vastus lateralis (VL) is found between the tensor fasciae latae muscle and the femur (arrow). The photograph at the left side of the figure indicates probe positioning... 

Once these muscle bellies have been evaluated, the probe is moved down to reach the greater trochanter. Due to a different orientation of the fibers of regional muscles and tendons, the optimal assessment of these structures can best be obtained by evaluating each individual structure in sequence. The gluteus minimus tendon is detected anteriorly as a hyperechoic structure that arises from the deep aspect of the muscle to insert into the anterior facet of the greater trochanter (Fig. 12.22). Transverse US images obtained over the lateral facet of the greater trochanter demonstrate the anterior tendon... 

Fig. 12.22. Gluteus minimus muscle. Coronal split-screen 12-5 MHz US image obtained over the muscle (GMi) and tendon (t) of the gluteus minimus. Note the gluteus medius muscle (GMe), which overlies the gluteus minimus. The tendon of the gluteus minimus is seen inserting onto the anterior facet of the greater trochanter (GT). The schematic drawing at the left side of the figure indicates probe positioning...

If the electrode is inserted too posterior it will be in the gluteus max-imus if inserted too anteriorly it will be in the tensa fascia lata if inserted too distally it will be in either the gluteus minimus or max-imus. 

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