ABFAS Exam Prep Questions with Correct Answers

ABFAS Exam Prep Questions with Correct Answers What type of bone healing is primary bone healing seen with Arthrodesis? - AnswerMembranous bone formation What are the four basic concepts for treatment of non-union? - Answer-1) resection of non viable tissue 2) augment with bone graft 3) bone stimulation 4) immobilization Which type of graft has haversion stems? - Answer-Cortical When is the weakest point in a cortical graft? - Answer-8 weeks What clinical lab finding is seen with aseptic necrosis of 1st met? - Answer-Increased ESR What type of collagen seen in cartilage healing? - Answer-Type II collagen Meissners corpuscle is in what layer of skin? - Answer-Papillary dermis What are the three stages of graft healing? - Answer-Plasmic inhibition, revascularization, regeneration What iv fluid to give HTN with CHF patient? - Answer-D5/.33% NS How do you calculate total daily fluid requirement? - Answer-First 10 kg x 100cc/kg Next 10 kg x 50cc/kg Diff in kg x 100 cc/kg Add all cc up. What is Rouleaux formation? - Answer-Occurs with dextran administration, interferes with blood typing and Cross matching, so before giving dextran, type and cross first. Name some Rapid Acting Insulin. - Answer-Lispro (Humalog) Aspart (Novolog) Glulisine (Apidir) Semelente Insulin Which is not a isotonic fluid? - normal saline - ringers lactate - 5% albumin - 3% NaCl - Answer-3% NaCl Which is not an epiphyseal bone tumor? A. Fibrosarcoma B. Non ossifying fibroma C. Ossifying lipoma D. Osteiod Osteoma - Answer-B What are diaphyseal bone tumors? - Answer-Aneurysmal bone tumor, enchondroma, fibrous dysplasia, unicameral bone cyst, eosinophilic granuloma, Ewings What are the low grade and high grade malignant bone tumors. - Answer-Low gradechondrosarcoma High grade-fibrosarcoma, osteosarcoma, malignant fibrous histiocytoma, Ewings, synovial sarcoma What bone tumor is found in skull, associated with Gardeners Syndrome where patient has supernumerary teeth, malignant colon polyps. Known as hyperostosis. - AnswerOsteoma Bone tumor seen with osteopiokolisis. - Answer-Enostosis 10-30 year old male with bulls eye appearance on X-ray at the calcaneus with radiolucent nidus surrounded by sclerosis. MRI confirms nidus. Pain at site of scan says radio uptake in region of nidus? - Answer-Osteiod Osteoma Tetracycline is given two days preop for osteoid oateoma because? - Answer-To give green yellow flourescence of the nidus Late lesions seen with mottled pattern with thin calcifications, radiolucent without reactive bone, metaphyseal or disphyseal, not relived with salicylate. Stage 3 benign lesion. - Answer-Odteblastoma Most common benign bone tumors in the body? - Answer-Osteochondroma Fibrous dysplasia of femoral head known as? - Answer-Shepherds crook deformity Subungal exostosis with more severe paraosteal reaction. Grossly lesion has nodular surface with glistening cartilage, ground glass on X-ray and mushroom pedunculated. NORAs lesion - Answer-Bpop - bizarre paraosteal Osteochondromatosis proliferation