Pronator Teres
– Anatomy: (see forearm flexors) – origin: – humeral head: medial epicondyle of humerus & common flexion tendon; – ulnar head: medial side of coronoid process of ulna; – insertion: middle 1/3 of lateral surface of … Read more
Hand
Pronator Teres Compression Syndrome – median nerve compression
– Discussion: – see: compression of the median nerve at the elbow and forearm; – compression of median nerve where it passes between the two heads of the pronator teres; – Differential Dx: – lacertus fibrosus: – draws tightly across the median nerve when the … Read more
Pronated Olblique View
– used to image the scaphoid, triquetrum, body of hamate, scapho-triquetral and trapezium-trapezoid joints; – hand rests on its ulnar border and tilts 40 to 50 degrees palmarly; fingers are slightly flexed and held together; – central beam is directed to the center of the carpus
Pronator Quadratus
origin: distal 1/4 of the volar (ant) surface of the ulna; insertion: distal 1/4 of the volar surface of the radius; action: pronates the forearm; nerve supply: Median , C7 , C8 , T1 ; synergists: Pronator Teres Stabilization of the distal ulna by transfer of the pronator quadratus origin.
Pressure Irrigation
– See: – topical antimicrobials – skin prep agents – High Pressure Irrigation: – irrigation can remove enough wound bacteria to cross the threshold to non-infected states, but only if the irrigant is delivered with sufficiently high pressure to mechanically disrupt bacterial adherance to the wound surface; – to be clinically … Read more
PreOp Planning for THR
– Surgical Considerations for Specific Diseases and Conditions: – Medical Assesment: – surgical risk assessment – risk factors for infection: are taken into consideration; – anesthesia consult and posting – anesthesia, medical consderations, and timing for … Read more
Preop Considerations for Nail Pathology
– Discussion: – consider photographs for documentation; – consent should explain possibility of long term nail disfigurement; – instruments: – freer septum elevator, dental spatulas, fine hemostats, beaver blade, small currette, single and double pronged skin hooks; – an easy way of applying … Read more
PreOp Planning for IM Nailing
– IM Nailing Technique – Open Femur Frx – Radiographs: – look for evidence of a pathologic lesion on x-ray, noting that it would be disasterous if a nail were driven through an occult osteosarcoma or chondroscaroma; – AP pelvis: (rule out concomitant injuries) – Hip Dislocation … Read more
Pre-Tendinous Cord
– Discussion: – arises from thickening and contracture of pretendinous bands: – inserts into skin distal to MP joint & into tendon sheath does not cause N/V displacement, but is responsible for MP flexion deformities which can be predictably corrected by surgical excision; – at a point just distal … Read more
Pouce Flottant Thumb
– See: Hypoplastic Thumb: – Discussion: – a rudimentary thumb w/ no or very little metacarpal & no or very few muscles is categorized as a floating thumb. – such a floating thumb may have all assoc. abnormalities & syndromes of true hypoplastic thumb and the absent thumb. – Radiographs: – … Read more