– Anatomy: – ulnar bursae includes little finger tendon sheath which begins at terminal phalanx & extends proximally half way up the palm; – occassionally the distal unexpanded part of little finger tendon sheath does not communicate w/ ulnar bursae; – in the palm, the ulnar … Read more
– See: – MP joint deformities – Distal Ulna Arthroplasty – Rheumatoid Hand – Anatomical Contributing Factors: (to ulnar drift) – normal mechanical advantage of the ulnar intrinsic muscles – asymmetry & ulnar slope of MC heads of index & middle fingers; – asymmetry of the collateral … Read more
– night stick fracture: mechanism: direct trauma w/ forearm used to block blow – stable frx: – diplaced < 50% = Stable; – periosteum & interosseous membrane are intact & act as restraint to rotation; – unstable fracture: … Read more
– Discussion: – indications are essentially the same as for radial shortening; – advocates of ulnar lengthening for Kienbock’s dz base their theorem on the fact that an ulnar lengthening procedure decreases the load across the radiolunate joint; – this procedure is ideally suited for pts … Read more
– See – Cubitbal Tunnel Syndrome – Differential Dx: Ulnar Nerve Dysfunction: – Martin Gruber Anastomosis – Ulnar Nerve Blocks: – Ulnar Nerve in Condylar Fractures: – Anatomy: – brachial plexus: – C8 and T1 nerve roots give rise to the medial cord which in turn, forms the ulnar nerve; – ulnar nerve passes distally, … Read more
– Discussion: – ulnar nerve blocks are used for frxs of little finger ray & in along w/ median and radial sensory blocks for ring finger ray fractures; – Anatomy: – ulnar nerve has two sensory branches that provide sensory innervation to ulnar side of the hand; – palmar … Read more
– See: – Vascular Problems of the Wrist and Hand: – Ulnar Artery in Forearm: – about 1 inch below the antecubital fossa, brachial artery divides into radial & ulnar arteries, w/ latter being larger; – paired venae comitantes accompany both radial & ulnar arteries; … Read more
(see also: Both Bone Forearm Fracture: / Ulnar Styloid Process) Anatomy radius & ulna lie parallel to each other when forearm is supinated; during pronation radius crosses ulna, rotating on axis that passes from capitulum through the distal end of ulna; ular side of wrist is supported by TFCC, which articulates w/ both lunate and triquetrium; … Read more
– Discussion: Tibial Plateau Frx Menu – bicondylar frx w/ distal oblique shaft frx; – these frx have bicondylar frx along w/ dissociation of diaphysis from metaphysis; – if the medial plateau fragment is intact, this frx can be treated with placement of a lateral plate and and Ex … Read more
– Discussion: – characterized by tearing of coracoclavicular ligaments & upward displacement of the medial fragment; – displacement secondary to frx medial to the CC ligaments – Deforming Forces: – wt of arm pulls outer fragment downward and forward due to attachments of trapezoid ligament to scapula; … Read more