What is an obturator on a valve?
Obturators or closing elements are the moving components inside valves which serve to mechanically obstruct or control the flow of the fluid in pipes. On globe valves, they are mostly tapered plugs. A further differentiation is made between shut-off, on/off, throttling and control valve discs or plugs.
How do you assess an obturator internus?
Keep the palpating hand in the position described previously, and gently change the angle of the hand so that the wrist and elbow drops and the fingers move upward into the tissue above. The obturator internus is located in this area. The muscle should feel somewhat soft.
Where is obturator muscle?
The obturator internus is the deep muscle of hip joint which is part of lateral wall of pelvis. It is found in the superior inner side of the obturator membrane.
What causes obturator Externus pain?
Obturator externus bursa occurs in the hip area, mostly in individuals over the age of forty or in those who participate in athletics. Irritation of the bursae may occur from repetitive motion of the joints, like running, or from a serious injury.
What does the word obturator mean?
: something (such as a prosthetic device) that closes or blocks up an opening (such as a fissure in the palate)
What is obturator Externus?
Obturator externus (OE) muscle is the conical shaped short external rotator located in the outer side of obturator membrane in lateral wall of pelvis.
What is the action of obturator internus?
| Internal obturator muscle | |
|---|---|
| Nerve | Nerve to obturator internus (L5, S1, S2) |
| Actions | Abducts & laterally rotates the extended hip and abducts the flexed thigh at the hip, and stabilizes the hip during walking |
| Identifiers | |
| Latin | Musculus obturatorius internus |
What causes obturator pain?
Athletes will present with pain, weakness in leg adduction, and sensory loss over a small area in the medial thigh sometimes just with exercise or exacerbated after exercise. Often, obturator neuropathy is caused by pelvic trauma or surgery so athletes should be questioned regarding previous surgery.
What is obturator test?
The obturator sign or Cope’s obturator test is an indicator of irritation to the obturator internus muscle. The technique for detecting the obturator sign, called the obturator test, is carried out on each leg in succession. The patient lies on her/his back with the hip and knee both flexed at ninety degrees.
How is an obturator used in a ball valve?
Ball valves consist of a spherical obturatorwith a cylindrical hole, usually of the same diameter as the pipe, although it can be smaller. Operation is by rotation (1/4 turn) of a shaft mounted, often horizontally, with its axis at right angles to the cylindrical hole.
Is the obturator internus part of the pelvis?
The obturator internus is the deep muscle of hip joint which is part of lateral wall of pelvis. It is found in the superior inner side of the obturator membrane. The obturator internus muscle originates from the inferior margin of the superior pubic ramus and from the pelvic surface of the obturator membrane.
Where do the muscles of the obturator originate?
Anteriorly is a group of skeletal muscles, including the obturator internus, that originate from the pubic ramus and function to stabilize and rotate the femur (Figure 13.2 ). Posteriorly, the performis muscles originate on the anterior sacrum, through the greater sciatic notch and act to externally rotate the thigh.
Where are the vessels of the obturator externus located?
The obturator vessels (anterior and posterior branches of the obturator artery and vein) are found deep to the obturator externus muscle, on the external surface of the obturator membrane. There are also nerves travelling in close proximity to this muscle.
