1. Most abundant protein of bone is?

a) Laminin

b) Osteocalcin

c) Type 1 collagen

d) Type 2 collagen

e) Calcitonin

Correct Answer: c) Type 1 collagen.

Collagen is the main structural protein of the various connective tissues in animals. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Type I is found in skin, tendon, vascular ligature, organs, bone (main component of the organic part of bone) and Type II is found in cartilage (main component of cartilage).

2. Chondroblastoma : Orthopedics MCQ

Which of the following sites is chondroblastoma of the femur likely to occur

a) Metaphysis

b) Epiphysis

c) Diaphysis

d) Medullary cavity

Correct Answer: b) Epiphysis.

Chondroblastomas are rare benign cartilaginous neoplasms that characteristically arise in the epiphysis or apophysis of a long bone in young patients. Despite being rare, they are one of the most frequently encoutered benign epiphyseal neoplasms in skeletally immature patient

3. Admantinoma : Orthopedics MCQ

The most common site of admantinoma of the long bones is

a) Fibula

b) Tibia

c) Ulna

d) Femur

Correct Answer: b) Tibia. Adamantinoma is low-grade malignant tumor of epithelial origin, is a rare tumor, The tumor occurs almost exclusively in the long bones; tumors in the tibia account for more than 80% of cases.

4. Carpal Tunnel Syndrome : Orthopedics MCQ

A patient presented with weakness of hand over a past few months with atrophy of the thenar eminence on examination. Which of the following nerves is implicated

a) Ulnar

b)Median

c) Radial

d) AxillaryCorrect Answer: b) Median nerve.

Although thenar atrophy is commonly associated with carpal tunnel syndrome; it is also associated with liver cirrhosis, thoracic outlet syndrome and Weill-Marchesani syndrome. In both conditions; Carpal tunnel and thoracic outlet, median nerve is responsible. 

Prev Next