The Hip - book

Van Nes Rotational Plasty

Functional Analysis of Patients Who Have Had a Modified Van Nes Rotationplasty. Van Nes rotational osteotomy for treatment of proximal femoral focal deficiency and congenital short femur. Modified Van Nes rotationplasty in the treatment of malignant neoplasms in the lower extremities of children. Modification of the skin incision for the Van Nes limb rotationplasty. The Van … Read more

Vancomycin Properties in Ca Sulfate and Bone Graft

Discussion:      – vancomycin and addition of antibiotics to cement,  and local delivery of antibiotics to infected joints):      – calcium sulfate:               – biologically inert osteoconductive material which serves as a temporary scaffold for osteoblasts;               – osteoset (wright medical technology):     … Read more

Valgus Stress Test

– See:       – Medial Collateral Ligament:       – Varus Stress Test: – Primary vs Secondary Restraints:      – seationing of MCL results in marked valgus instability;      – isolated sectioning of ACL, PCL, LCL, or posterolateral structures does not cause large increases in valgus angulation;     – … Read more

Vancomycin Properties in Cement

– Discussion: (see vancomycin and addition of antibiotics to cement,  vanc in ca sulfate and local delivery of antibiotics to infected joints): – dosing:              – as much as 4 gm of vancomycin (as well as 4.6 gm of tobramycin) can be used per batch of cement; – note that the cost for a 1 … Read more

Valgus Hindfoot Deformity in CP

– See:         – Cerebral Palsy: – Discussion:     – 64% w/ spastic diplegia & quadriplegia had pes valgus;     – spastic pes valgus foot is a flexible deformity until adolescence;     – spastic peroneal muscles pull the forefoot laterally and with it supporting plantar ligaments for the talar … Read more

V-Y Local Advancement Flaps

– See:       – Nail Bed Injuries       – Finger Tip Injuries: – Discussion:     – may be used for finger tip amputations which have more dorsal soft tissue loss than palmar loss);     – advancement flaps from same finger provide advantage of rapid healing, limited morbidity, and critical sensibility … Read more

Urine pH Analysis: average 4.6-8

– Discussion:  – Urine pH less than 6 is common in pre-renal azotemia and unusual in acute tubular necrosis;  – Acid:  – High Protein, Ammonium Chloride, Mandelic Acid & Chlorothiazide Acidosis, ketoacidosis (Starvation, DKA), COPD;  – Uric acid, cyytine and calcium oxalate stones precipitate in acid urines;  – Meats and cranberry juice makes the urine … Read more

Urokinase

– See: Thrombolytic Therapy: Pharmocological Agents for Vascular Surgery;  – Dose:  – load w/ 4,400 units/kg IV bolus overe 10 min; – load w/ 50,000 units IV bolus into the occluded vessel, then infuse at 50,000 units/hr;  – maintenance dose: 4,4000 units/kg for 12-24 hrs  Two urokinase dose regimens in native arterial and graft occlusions: … Read more

Vaccum Mixing of Methylmethacrylate

– Discussion:           – see cement mixing:            – in the study by Geiger MH, et al (2001), the authors performed a controlled study compared the strength and porosity of 48                    polymethylmethacrylate cement-implant constructs prepared with open bowl versus vacuum mix technique;                   – 48 blast finished stainless … Read more