Lister’s tubercle is an anatomic process on the dorsum of the radius that functions as a pulley to the EPL. The anatomic localization of Lister’s tubercle is important in some clinical and surgical procedures.
What is the function of listers tubercle?
The prominent bony tubercle over the dorsal aspect of the distal radius, known as Lister’s tubercle, functions as a pulley for the extensor pollicis longus (EPL) tendon before the tendon pivots and turns obliquely to insert onto the distal phalanx of the thumb (1).
What muscles attach to Lister’s tubercle?
supinator muscle. supinator arch.abductor pollicis longus muscle.extensor pollicis brevis muscle.extensor pollicis longus muscle.extensor indicis muscle.
What is the dorsal tubercle?
The dorsal tubercle is a ridge between the grooves for extensor carpi radialis brevis and extensor pollicis longus muscle. This definition incorporates text from a public domain edition of Gray’s Anatomy (20th U.S. edition of Gray’s Anatomy of the Human Body, published in 1918 – from ).
Who is Lister’s tubercle named after?
Joseph (Lord Lister), English surgeon, 1827-1912. Listeria – a genus of aerobic to microaerophilic, motile, peritrichous bacteria.
What is EPL tendon?
The long extensor tendon to the thumb is called the Extensor Pollicis Longus (EPL). This tendon straightens the end joint of the thumb and also helps pull the thumb in towards the index finger. The tendon runs around a bony prominence on the back of the wrist called Lister’s tubercle.
What is sigmoid notch?
The sigmoid notch is a narrow, oblong, articular depression on the lateral side of the coronoid process. This bone is the stable unit of the forearm and supports the loads conveyed from the radius and carpus. The head of the ulna serves as the articular surface for the sigmoid notch around which the radius rotates.
What is the EIP tendon?
The extensor pollicis longus (EPL) tendon extends the thumb interphalangeal joint and also contributes to metacarpophalangeal joint extension. It serves an important role in hand opening and fine control of thumb position.
What is the volar tubercle?
A volar tubercle is present on the volar side and two lateral tubercles [one on radial and one on the ulnar side. The volar tubercle provides attachemnt to flexor digitorum [flexor pollicis longus in thumb] and lateral tubercles provide attachment to lateral collateral ligaments.
What is a Palmaris longus?
The palmaris longus (PL) is a narrow, fusiform muscle of the superficial anterior compartment of the forearm [1,2,3,4,5,6]. The muscle originates at the medial epicondyle of the humerus and the antebrachial fascia, with the muscle belly partially fused with the adjacent muscles [3, 4].
What bones have tubercles?
Main tubercles
Humerus.Ribs.Tibia.Femur.Fifth metatarsal.
What is scaphoid tubercle?
The scaphoid tubercle is a bony prominence on the ventral surface of the lateral portion of the distal pole.
Where is the radial tuberosity?
Beneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity; its surface is divided into: a posterior, rough portion, for the insertion of the tendon of the biceps brachii. an anterior, smooth portion, on which a bursa is interposed between the tendon and the bone.
Where is the ulnar tuberosity?
The tuberosity of the ulna is a rough eminence on the proximal end of the ulna. It occurs at the junction of the antero-inferior surface of the coronoid process with the front of the body.
How do you treat intersection syndrome?
This condition is generally treated conservatively by avoiding activities that are painful, and by immobilizing the thumb and wrist in a splint. Ice and non-steroidal anti-inflammatory medications like ibuprofen can also help with pain and swelling. Corticosteroid injections into the area are sometimes recommended.
What is the underlying cause of intersection syndrome?
What causes intersection syndrome? The condition is caused by repetitive movements that stress the wrist extensor tendons. It is most common in athletes, particularly competitive rowers and weightlifters, and can also affect office workers or anyone who carries out repetitive wrist and arm movements.
Which nerve is affected in Colles fracture?
A Colles’ fracture is a type of fracture of the distal forearm in which the broken end of the radius is bent backwards. Symptoms may include pain, swelling, deformity, and bruising. Complications may include damage to the median nerve. It typically occurs as a result of a fall on an outstretched hand.
