Lets look at some muscle anatomy in the pelvis on CT scans. What are these musc
Haffner, Lisa, Host – Your Life A to Z has reference to this Academic Journal, PHwiki organized this Journal Lets look at some muscle anatomy in the pelvis on CT scans. What are these muscles Psoas muscles Which are the muscles that you are starting to see in front of in addition to behind the iliac bones Gluteus medius Iliacus Can you idendify the abdominal muscles at this level Rectus abdominis External oblique (superficial) Internal oblique (middle) Transversus abdominis (deep)
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What muscle are we starting to get into just posterior to the gluteus medius This is the gluteus maximus (it doesnt look very maximus at this level it gets larger more inferiorly) At this level you start to see the iliacus in addition to the psoas coming together in addition to we also start to get into the third gluteal muscle. This is the gluteus minimus
Which muscles are these Piri as long as mis muscles Which major nerve is this Sciatic nerve This is where the sciatic nerve comes out of the greater sciatic as long as amen. What are the anatomic boundaries of the greater sciatic as long as amen in addition to what comes out of it
What is the name of this muscle Sartorius What is the origin of this muscle Anterior superior iliac spine. You can see it if you follow the muscle 4 slices superiorly. Which muscle is this Hint, it is the only member of the quad group to cross both the hip in addition to the knee joint. Rectus femoris What is the origin of the rectus femoris Anterior inferior iliac spine, which you can see if you trace the muscle 2 images superiorly.
What portion of the bony pelvis is the arrow pointing to Hint you are sitting on it right now. Ischial tuberosity Which flexor of the knee attaches here The hamstrings Which is this lateral muscle Hint, if you trace it back it has the same attachment point as the sartorius on the anterior superior iliac spine. Tensor fascia lata This is a normal x-ray of the hips. Not the joint space between the femoral heads in addition to the acetabulae.
This is a patient with osteoarthritis in the left hip. Not there is no joint space in the superior aspect of the hip joint. There is also sclerosis (increased density in the bone) above the joint space characteristic of osteoarthritis. There is also osteophyte as long as mation (bony production on the edges of the joint-arrow). This is also commonly seen in osteoarthritis. These are 2 different types of hip prostheses in this patient with bilateral total hip replacements. This is a normal view of the pelvis. When looking as long as acetabular fractures there a few lines to look at. This is the iliopubic line which outlines the anatomic anterior column This is the ilioischial line which outlines the anatomic posterior column.
This is a Judet view (oblique view) of the pelvis which better illustrates the columns of the acetabulum. Can you find the anterior column (iliopubic line) Can you identify the posterior wall This is the opposite oblique. Can you find the region of the posterior column Can you identify the anterior wall/lip of the right acetabulum This is a case with an acetabular fracture. Do you see disruption of one of the columns The anterior column is disrupted
This is another oblique view. Do you see disruption of one of the columns The posterior column is disrupted On the left you see a view looking from the outside of the pelvis. The acetabulum is the dark structure in the middle (arrow). The fracture line shows how a posterior column fracture runs Anterior Posterior On the right you see a sagittally re as long as matted CT (oriented the same way as the anatomic drawing to show the fracture line of a posterior column fracture. These are consecutive sagittal images illustrating the anterior in addition to posterior divisions of the internal iliac artery. Can you try in addition to identify the superior in addition to inferior gluteal arteries. Anterior division Posterior division
This is a 3D re as long as matted images of the CT angiogram from the previous slide. The arrow points to the posterior division of the internal iliac artery. Can you see why the superior gluteal artery could be injured with a posterior column fracture Fracture plane of a posterior column fracture
Haffner, Lisa Host – Your Life A to Z
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