PDF Radial Head and Neck Fractures 1. Note the origin of the dorsal intercarpal ligament from the distal scaphoid (S) and the combined insertion of both the radio-carpal and intercarpal ligaments on the tri-quetrum (T). Lister's tubercle or the dorsal tubercle of the radius is a bony protuberance on the dorsal surface of the distal radius.It separates the 2 nd (ECRB and ECRL) and 3 rd () extensor compartments.It acts as a pulley for the EPL tendon, changing its mechanical direction of action. Lister's tubercle Scaphoid • Has a proximal pole, a waist, and a distal pole • Waist • Located within anatomic snuox Scaphoid . Ulnar Head in a Sentence As palpable structure, Lister's tubercle has been used as anatomical landmark for localizing first dorsal extensor compartment, posterior interosseous nerve, superficial branch of radial nerve and dorsal radiotriquetral ligament. Compartment two lies on the radial side of Lister's tubercle, a bony prominence on the dorsal aspect of the distal radius, and contains the extensor carpi radialis longus (ECRL) and extensor carpi radialis brevis (ECRB) tendons. Using Lister's tubercle of the radius as the reference point X, XN1 and XN2 distances were measured along a plane perpendicular to the axis of the forearm, at the level of the Lister's tubercle (Figure 3). Retract EPL radially and EDC medially. A TFCC injury typical presents with ulnar sided wrist pain and can result in a distal radioulnar joint (DRUJ) injury. There is a smooth groove for passage of the extensor pollicis longus (EPL) tendon on the medial aspect of the dorsal tubercle. Anatomic characteristics and clinical importance of the ... Lister's tubercle can irritate the EPL due to mechanical friction, particularly if there has been previous fracture or deformity of the tubercle. The extensor pollicis longus tendon is the most frequently injured tendon in a dorsal approach of distal radius as it passes against the ulnar aspect of the Lister's tubercle. The scaphoid stress test, as described by Watson, may be difficult to perform in the acutely swollen and painful wrist, but may be better tolerated a few weeks following injury. Age Gender Time to US after injury (wks) Operative technique 1 23 F 14 EIP to EPL transfer 2 25 M 4 EPL repair PL graft 3 54 M 2 EIP to EPL transfer 4 47 . Extensor tendon injuries of the thumb are different from other extensor tendon injuries in that the extensor pollicis longus tendon behaves like a flexor tendon and retracts back to the wrist and can generally be recovered at Lister's tubercle. [1] It varies in size and shape significantly. Sonographic windows commonly obtained include longitudinal and transverse views at the radial border of the wrist, volar wrist just medial to the thenar eminence, and dorsal wrist adjacent to lister's tubercle 18. rheumatoid . The medial surface of the distal radius consists of the ulnar notch and the articular surface for the ulnar head . Lister Tubercle - Summarized by Plex.page | Content ... Lister's tubercle is a small, mast-like protuberance in the center of the distal radius that is identified by palpating the distal radius while the patient flexes the wrist. Further ulnar on the dorsal side of the wrist from Lister's tubercle is the DRUJ. Anatomical Variants of Lister's Tubercle: A New ... The . Lister's tubercle. Lister's tubercle - WikiMili, The Best Wikipedia Reader The size of Lister's tubercle varies from 2 to 6 mm, and the depth of the extensor pollicis longus groove varies from 1 to 6 mm. ESIN entry points (pediatric radius) In the distal radius use either the lateral or Lister's tubercle entry point. Lister's tubercle is an old term for prominent bony tubercle over the dorsal aspect of the distal radius 1), which functions as a pulley for the extensor pollicis longus tendon before the tendon pivots and turns obliquely to insert onto the distal phalanx of the thumb 2). Crepitus is a very common finding on the exam over the site of irritation. Lister's tubercle; Important not to miss: Carpal dislocation - dislocation of any of the small bones which make up the wrist. Some of the results mentioned above are summarized in Table 1. region of Lister's tubercle immediately adjacent to the ex- The injury was treated with a cast to allow the swelling to tensor pollicis longus tendon sheath. Some of the results mentioned above are summarized in Table 1. 2008 Apr;33(2):149-51. doi: 10.1177/1753193407087575. appearance of Lister's tubercle; whereas, Type 3A and 3B variants were rare configurations (6.4% and 3.1%, respectively) wherein the extensor pollicis longus tendon coursed along the radial aspect of Lister's tubercle. Lister's tubercle serves as a pulley for the tendon of extensor pollicis longus, which wraps around the medial side and takes a 45 degree turn. The tendon most commonly ruptures near Lister's tubercle in association with distal radial fractures, but can also rupture spontaneously. 61. Using an image intensifier, determine the correct entry point on the lateral side of the radius, 1-1.5 cm proximal to the growth plate. . In 17 specimens(68%) cephalic vein crossed the SBRN superficially once. The distance between Lister's tubercle and the closest branch passing through the radial side of the tubercle was 1.58 cm (0.12 cm SD). A. Transverse ultrasound image illustrates a fracture extending through Lister's tubercle, resulting in an irregular dorsal cortex (arrow) and the EPL tendon in cross-section (arrow head) close to the fracture edge. The TFCC is . EPL EPB Repair Recovery at Lister's Tubercle. to the Lister tubercle. • ATempt to reproduce force/mechanism of injury with manual tes.ng • Perform only aer ruling out fracture Watson Test • Assesses for scapholunate instability A possible mechanism of direct injury to the EPL tendon at Lister's tubercle during falls with the wrist fully extended J Hand Surg Eur Vol. With the ultrasound probe in a transverse orientation, slide distally until Lister's tubercle is visualized. (By permission of Mayo . Lister's tubercle is found on the dorsal distal radius. 61. Extensor pollicis longus injury causes extension lag in both metacarpophalangeal and interphalangeal joints and it should be repaired. This is the more common of the two intersection syndromes and occurs approximately 4-8 cm proximal to the Lister tubercle. The condition, which is also known as "oarsmen's wrist," may affect rowers, weight lifters, secretaries, carpenters, and rice harvesters as a result of repetitive wrist flexion and extension causing friction [4, 13-15].