Ortho Oracle - orthopaedic operative atlas

Deltoid Muscle

  – See: Shoulder Abductors – Discussion:     – major function of the deltoid muscle is to abduct  arm;     – it performs this action after   scapula[scapula  has been fixed by its stabilizing muscles and the humeral head  has been            snubbed to glenoid  by the rotator cuff;   … Read more

Washout and Debridement: for Acutely Infected TKR

– See: TKR Infection Menu – debridement w/o component removal:     – see debridement and washout of infected THR     – IV antibiotic therapy has limited success in treatment of infected TKR; managed with wound debridement, polyethyene exchange,              application of temporary antibiotic beads, and IV antibiotics;     – acute hematogenous infection:              – early acute hematogenous infection … Read more

Debridement of Chondral Defects of the Knee

– Discussion: (see osteochondral injury) – these injuries are distinct from degenerative arthritic lesions and management of these lesions should remain distinct as well; – theory is that penetration of subchondral bone causes bleeding from underlying vessels which allows clot formation in the cartilaginous defect and subsequent formation of fibrocartilage; – some argue that subchondral drilling … Read more

Ceftriaxone/Rocephin

– Discussion:     – third generation cephalosporin;     – adult: 1-2gm IV q12-24hr; t1/2=7.5hr; w/ long half life, allows once a day dosing, and home treatment;     – peds: 100 mg/kg/day q12 or q24hr;     – no need to change w/ renal failure;     – broad spectrum Gm neg and … Read more

Cefoxitin/Mefoxitin

– Second Generation Ceph – Adult: 1-2gm q4-8hr IM/IV;t1/2=.5 hr;    – or try:1-2gm q6-8hr IV to max dose 12gm/day (2gm q4hr);    – for surgical prophylaxis:2gm IV/IM 30min prior to surgery then 2gm q6hr for 24hr( 72hr for prosthetic arthroplasty); – Res to B. Lactamase; good for: B.fragilis, aerobic and anaerobic; N.gonorrhea, and surgery; – … Read more

Cavovarus Foot

 – See: Pes Cavus: – Discussion: – seldom present at birth, the deformity gradually becomes apparent as childs foot grows and matures; – components: – heightened longitudinal arch – cavus – – plantar flexion of 1st ray and pronation of the forefoot – responsible for cavus appearance of foot; – on wt bearing it forces … Read more

Causes of Hypercalcemia

– See:    – Ossification of Soft Tissue and Periosteum     – Metastatic Bone Tumors (prostate, thyroid, kidney, breast, lung)     – Hyperparathyroidism     – PTH secreting tumors (lung, kidney, ovary, colon), multiple myeloma     – Vitamin D            – amount of Vit D required to produce HyperCa … Read more