The Hip - book

Spine in Osteoporosis

– Discussion:     – vertebral bodies are the skeletal elements most at risk of frx in this disease;     – progressive loss of stature results in progressive shortening of paraspinal musculature which therefore requires more prolonged active contraction for maintenance of posture (resulting in pain of muscle fatigue);           … Read more

Snake Bite Wounds

– See: necrotizing fascitis – Discussion:     – snake bite resources     – snake types:          – pit vipers (crotaline) which include rattlesnakes, cottonmouths, and copperheads;                – crotalus (rattlesnakes)                – agkistrodon (copperheads, water moccasins)                – micrurus … Read more

Silver Sulfadiazine (Silvadene)

– Discussion: (see silvadene.com)     – silvadene burn cream is a 1% suspension of silver sulfadiazine in a water soluble base;     – for prevention and treatment of wound sepsis in patients with second and third degree burns;     – topical bactercidal agent effective against many gran negative and positive bacteria as well as yeast, … Read more

Scapholunate Instability

– Discussion: – anatomy and ligamentous contraints:            – ligaments of the wrist – SL interosseous ligament – SLD is most common and most significant ligament injury of wrist; (carpal instability); – risk factors: ulna minus configuation, slope of radial articular surface, and lunotriquetral coalition; – spectrum of injury: (increasing severity) – ref: Association of lesions of … Read more

Rx of Atrial fibrillation

– See:  – A. Flutter  – Causes of A. fib  – r/o WPW as a predisposing cause;  – If Unstable (or onset < 3 days): Cardio Convert (100 J)  – If Stable: (w/ rates greater than 100/min) Consider  – Digoxin: to slow the AV conduction rate  – Propanolol:  – Diltiazem  – Verapamil:   – combination of … Read more

Rickets

– See:     – Osteomalacia:     – Vit D Abnormalities: – Discussion:     – rickets is an osteomalacic syndrome in which there is an inability to mineralize chondroid and osteoid;           – lack of available calcium or phosphorus (or both) for mineralization of newly formed osteoid;     … Read more

Rifampin

– Discussion:     – for primary TB, treatment of assymptomatic carriers of N. meningitidis to eliminate meningococci from the nasopharynx;     – also used in combination with other agents (cipro, levofloxacin, zyvox) for treatment of staphyloccocus infections;     – it inhibits bacterial DNA dependent RNA polymerase activity;     – may be especially useful to eradicate … Read more

Rheumatoid Forefoot

– See:        – Hyperpronation of Rheumatoid Foot;        – Rheumatoid Arthrtis        – Rheumatoid Foot – Discussion:     – most commonly affected portion of the rheumatoid foot;     – typical forefoot deformities are hallux valgus, hyperextension of MP joints, and flexion ofthe IP joints of the … Read more

Reperfusion Injury / Crush Injury

– See: Compartment Syndrome – Discussion:     – traumatic rhabdomyolysis, or crush syndrome, is consequence of prolonged continuous pressure on the limbs;     – it reflects disintegration of muscle tissue & influx of myoglobin, potassium, and phosphorus into the circulation;     – syndrome is characterized by hypovolemic shock and hyperkalemia;     … Read more

Renal / Dialysis

– Dialysis:     – for hypercatabolic patient early and aggressive dialysis which is instituted before the Cr is > 8-10 and before BUN > 100 improves patient outcome;     – hemodialysis effciently removes aminoglycosides (50% after 4hrs) and penicillins and cephalosporins;          – hence drug doses should be given at the end of … Read more