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Abductor Pollicis Brevis

March 26, 2010 By 2 Comments

The abductor pollicis brevis is an abductor of the thumb.

It is a thenar muscle, and therefore contributes to the bulk of the palm’s thenar eminence.

It originates from the flexor retinaculum of the hand, the tubercle of the scaphoid bone, and additionally sometimes from the tubercle of the trapezium.

Running lateralward and downward, it is inserted by a thin, flat tendon into the lateral side of the base of the first phalanx of the thumb and the capsule of the metacarpophalangeal joint.

It is supplied by median nerve. C8/T1

This muscle is abductor of the thumb. It also assists in opposition and extension of the thumb.

Popularity: 1% [?]

Filed Under: A-D, Definitions Tagged With: ,

Clinical Photograph of Fibular Bone Graft

March 26, 2010 By Leave a Comment

Bone grafting is a comonly performed procedure in orthopedics. Fibula is a commonly used as source of autogenous bone graft. Following image shows a fibula removed during surgery for using as bone graft.

The bone measured around 12 cms and was used for surgery of avascular necrosis of head of femur.

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Abductor Digiti Quinti

March 25, 2010 By Leave a Comment

It is another name for Abductor Digiti Minimi.

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Filed Under: A-D, Definitions Tagged With: ,

What Is Intradiscal Electrothermal Annuloplasty

March 25, 2010 By 1 Comment

Intradiscal electrothermal annuloplasty (IDEA) or intradiscal electrothermal therapy (IDET)  is a minimally invasive form of annuloplasty (repair of annulus fibrosus) that includes use of heat to  seal any ruptures in the disc wall and probably burn nerve endings making the area less sensitive to pain.

It is a relatively new procedure.

Mechanism of Action

Intradiscal electrothermal annuloplasty  is thought to decrease discogenic pain by thermal modification of collagen fibers and destruction of disc pain receptors. When heat is applied to annulus, it causes damage to hydrogen bonds of the collagen fibers which results in collagen contraction.

With this procedure the temperature within the disc may reach  as much as 650°C and it may lead to collagen contraction by as much as 35% from its original size. [Read more...]

Popularity: 1% [?]

Filed Under: Spine, Thoracic-Lumbar Sacral Spine Tagged With: , , , , ,

Abductor Digiti Minimi

March 24, 2010 By 1 Comment

There are two muscles with name of Abductor digiti minimi. One is in the hand and another is in the foot.

Abductor Digiti Minimi of Hand

Abductor Digiti Minimi of Hand

The Abductor minimi digiti or abductor digiti quinti is situated on the ulnar border of the palm of the hand.

It arises from the pisiform bone and from the tendon of the Flexor carpi ulnaris, and ends as a flat tendon inserts into the ulnar side of the base of the proximal phalanx of the little finger.

Abductor Digiti Minimi of Foot

Abductor Digiti Minimi of Foot

The Abductor digiti minimi of the foot lies along the lateral border of the foot. It arises from the lateral process of the tuberosity of the calcaneus, from the under surface of the calcaneus between the two processes of the tuberosity, from the forepart of the medial process, from the plantar aponeurosis, and from the intermuscular septum between it and the Flexor digitorum brevis.

Its tendon, is inserted into the lateral side of the base of the first phalanx of the fifth toe.

Its function is to flex and abduct the fifth (little) toe.

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Transverse Carpal Ligament

March 23, 2010 By Leave a Comment

It is another name for Flexor Retinaculum of hand.

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Filed Under: Definitions, S-Z Tagged With: ,

Volar Carpal Ligament

March 22, 2010 By Leave a Comment

Volar carpal ligament is the thickened portion of antebrachial fascia on the anterior of the wrist. Many do not consider it to be a separate entity.

It is also called palmar carpal ligament. It lies superficial and proximal to the flexor retinaculum.

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Filed Under: Definitions, S-Z Tagged With: ,

Palmar Aponeurosis

March 21, 2010 By Leave a Comment

The palmar aponeurosis 0r palmar fascia is the fascia that  invests the muscles of the palm. It consists of central, lateral, and medial portions.

The central portion occupies the middle of the palm, is triangular in shape, and of great strength and thickness.

The lateral and medial portions of the palmar aponeurosis are thin, fibrous layers, which cover, on the radial side, the muscles of the ball of the thumb, and, on the ulnar side, the muscles of the little finger.

Popularity: 2% [?]

Filed Under: Definitions, N-R Tagged With: , ,

What Is CT Myelography?

March 21, 2010 By 5 Comments

To understand CT myelography we need to first understand what is myelography.

A Myelography is a procedure that uses a contrast [A material that enhances image of tissues] and X-rays to make spinal canal.

A myelogram can be done to find a tumor, an infection, problems with the spine such as a herniated disc, or narrowing of the spinal canal caused by arthritis.

A dye is put into the subarachnoid space with a thin needle. The dye moves through the subarachnoid space so the nerve roots and spinal cord can be seen more clearly. Pictures may be taken before and after the dye is used. To get more information from the test, a CT scan is often done after the X-rays, while the dye is still present. [Read more...]

Popularity: 3% [?]

Filed Under: Musculoskeletal Radiology, Spine Tagged With: , , , , ,

Flexor Retinaculum

March 20, 2010 By 2 Comments

There are two flexor retinacula in the body. One flexor retinaculum is present in the wrist and other is present in the ankle.

Flexor Retinaculum of Wrist

The flexor retinaculum of the wrist is also called transverse carpal ligament or anterior annular ligament.

It is a strong, fibrous band, that arches over the carpus, converting the deep groove on the front of the carpal bones into a tunnel, the carpal tunnel.

It is attached, medially, to the pisiform and the hamulus of the hamate bone,  laterally, to the tubercle of the scaphoid, and to the medial part of the volar surface and the ridge of the trapezium.

Superficially, it is with the volar carpal ligament and in depth with the palmar aponeurosis. It is crossed by the ulnar vessels and nerve, and the cutaneous branches of the median and ulnar nerves. [Read more...]

Popularity: 2% [?]

Filed Under: Definitions, E-H Tagged With: , ,
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