Ortho Oracle - orthopaedic operative atlas

Urine Analysis

pH Specific Gravity Blood Glucose Ketones Nitrite/Leukocyte Esterase Protein Pyuria Spot/Random Urine Chem Urine culture  Perioperative factors associated with septic arthritis after arthroplasty. Prospective multicenter study of 362 knee and 2,651 hip operations.      – prospectively evaluated perioperative factors associated with septic arthritis after 362 knee and 2,651 hip arthroplasties;      – preoperative urinary tract … Read more

Urine analysis: Specific Gravity: > 1.023 indicates nl [ abilities

 – Increased:  – Volume depletion, CHF, Adrenal Insufficiency, DM, SIADH, Increased proteins (nephrosis) (upto 1.050);  – If markedly increased (1.040-1.050), Suspect artifact or excretion of radiographic contrast media;  – Decreased:  – DI, Pyelonephritis, Glomerulonephritis, Waterload w/ Nl Renal Function;  – Misc:  – Specific gravity varies inversely with urine excretion – In some conditions this relationship … Read more

Urinary Tract Infection

– UTI in the Spine Injured Patient  Management:    – Rx with ATB’s, pending urine culture    – Consider single dose therapy for symptomatic non-pregnant women with no known anatomic abnormalities;    – Follow up culture in 7 to 14 days;    – Prolonged therapy (7-10 days) is for symptomatic men, pregnant women or patients with … Read more

Unstable Intertrochanteric Fractures

 – See:         – Radiographic Findings          – Sliding Hip Screw w/ Unstable Frx – Discussion:     – it is important prior to reduction to distinguish between unstable and stable frx intertroch fractures;     – w/ cortical instability on one side of frx owing to cortical overlap or destruction, frx … Read more

Ultrasound for DDH

– See: DDH – Discussion:     – ultrasound allows description of the morphology of the acetabulum and the stability of the joint (dynamic examination);     – ultrasound becomes less useful after 6 months of age because of progressive ossification of the femoral head;     – joint stability:           … Read more

Press Fit Femoral Stem: Proximal Fixation

– Discussion:     – press fit femoral stem main discussion     – coating press fit femoral stem;     – to maintain bone stock, proximal stress transfer must be a prominent feature of any cementless implant system;     – proximal part of femur is often exposed to high longitudinal strain, & bone … Read more

Types of Femoral Stem Loosening

– See: Total Hip Replacement Menu          – Cemented Femoral Component: Loosening:          – Bending Cantilever          – Calcar Pivot: (distal toggle)          – Medial Midstem Pivot          – Pistoning:          – Exam: for THR Loosening

Types of Hemiarthroplasty Stems

                    – See: – Austin Moore Prosthesis:      – only true calcar support prosthesis is the old Moore implant, whose stem was too small to provide canal fill in most cases;      – designed for patients w/ 1/2 to 3/4 inches of remaining femoral … Read more

Type-IV Intertrochanteric Fractures

  – See: Unstable Intertrochanteric Fractures – Discussion:     – consist of an intertrochanteric frx w/ a subtroch component;     – constitutes 15% of intertroch frx; – Treatment Options:     – sliding hip-screw or 2nd-generation locking nail may be used in rx of intertroch-subtroch frx that have femoral shaft extension;     … Read more