Data Trace Editor – Anatomy: – extensor tunnel I – origin: – posterior side at the distal end of the body of both the ulna and radius near their middle; – insertion: – posterior surface of the base of the proximal phalanx of thumb; … Read more
– See: Extensor Pollicis Longus Rupture: – Anatomy: – origin: posterior surface of the middle 1/3 of the ulna & interosseous membrane; – insertion: posterior surface of the base of the distal phalanx of thumb; – action: extends the distal phalanx of the thumb; continued action, extends proximal phalanx and adducts the … Read more
– See: Extensor Tendon Rupture in RA – Discussion: – this tendon is prone to rupture from synovitis and increases friction at Lister’s tubercle second to diseases such as RA and Lupus; – EPL is tendon that is most frequently ruptured from distal radius frx; – if … Read more
– See: – Extensor Tendon Rupture – Extensor Digitorum Communis – Extensor Mechanism of Digits – Anatomy of EDC: – note that EDC is less tolerant of shortening than FDS due to differential in tendon excursion (50 mm compared to 70 mm, respectively); – references: – The terminal tendon … Read more
– Anatomy: Origin: the forepart of the supralateral surface of the Calcaneus;lateral talocalcaneal ligament and cruciate crural ligament; Insertion: braches into 3 tendons that insert into the lateral sides of the tendons of EDL of 2nd, 3rd, & 4th toes at the level of the MTP joint; Action: extends the … Read more
– See: – Forearm Extensors: – Extensor Tendon Laceration – origin: lateral epicondyle of humerus; – tunnel IV: – narrow retinaculum over dorsum of wrist forms pulley system for extensor tendons; – above the wrist its four slips spread out joined together by juncturae; … Read more
– Origin: – lateral condyle of the tibia, head and proximal 3/4 of the anterior surface on the body of the fibula, proximal portion of interosseus membrane, deep fascia and intermuscular septa; – Insertion: – divides into 4 tendons after passing under the extensor retinaculum; – … Read more
– Origin: – the forepart medial aspect of calcaneus; lateral talocalcaneal ligament; – the EHB travels over the dorsum of the metatarsal head; – Insertion: – dorsal surface of the base of proximal phalanx of hallux; – Nerve Supply: – Deep peroneal, L4, … Read more
– Origin: – middle 1/2 of the anterior surface of the fibula and adjacent interosseus membrane. – the EHL lies dorsal to the EHB and is prevented from subluxation by the dorsal extensor hood; – Insertion: – dorsal surface of base of distal phalanx of hallux – Nerve supply: … Read more
– See: Forearm Extensors : – Anatomy: – origin: 2 heads from lateral epicondyle & middle 1/3 of posterior ulna; – insertion: – posterior surface of base of 5th metacarpal; – ECU is the only wrist extensor that lies in its own fibro-osseus tunnel; – action: extends and adducts the hand at the wrist; – … Read more