Basic Anatomy

Question 1

Synarthrosis

Answer 1

Fibrous (Immovable)
Ex. Suture, Syndesmosis,
Gomphosis - articulations of tooth and alveolar socket of mandible

Question 2

Amphiarthrosis

Answer 2

Cartilagenous (slightly movable)
Primary = Synchondrosis (Hyaline)
Secondary = Symphysis (Fibrocartilage)

Question 3

Diarthrosis

Answer 3

Sinovial (freely movable)

Question 4

Ex. of Plane joint

Answer 4

Sternoclavicular, acromioclavicular

Question 5

Ex. of Hinge joint / Ginglymus

Answer 5

Elbow, Knee, Ankle

Question 6

Ex. of Pivot joint/ Trochoid

Answer 6

Atlantoaxial; Radioulnar; C1/C2

Question 7

Ex. of Condyloid joint

Answer 7

Metacarpophalangeal/ Knuckle

Question 8

Ex. of Ellipsoidal joint

Answer 8

Wrist

Question 9

Ex. of Saddle joint

Answer 9

Carpometacarpal of the thumb

Question 10

Ex. of Ball and Socket/ Enarthrosis

Answer 10

Shoulder; hip

Question 11

Defective Type I collagen

Answer 11

Osteogenesis Imperfecta

Question 12

Defective Type 4 collagen

Answer 12

Alport Syndrome

Question 13

Avascular Necrosis commonly affects what part of the lower extremeties

Answer 13

Femoral Head

Question 14

Permanent flexion contracture of the hand at the wrist (clawlike deformity) commonly caused by fracture in the elbow or upper arm

Answer 14

Volkmann’s contracture

Question 15

Artery occluded in Volkmann’s contracture

Answer 15

Brachial artery

Question 16

Muscles affected by Volkmann’s contracture

Answer 16

Flexor Digitorum Profundus

Flexor Policis Longus

Question 17

Most common primary bone CA

Answer 17

Osteosarcoma

Sunburst appearance on X-ray

Question 18

Codman Triangle

Answer 18

The triangular area of new subperiosteal bone that is created when a lesion raise the periosteum away from the bone