Concave/Convex

Question 1

SC - Elevation and Depression

Answer 1

Convex clavicle on Concave sternum

OPP

Question 2

SC - protraction and retraction

Answer 2

Concave clavicle on Convex sternum

SAME

Question 3

AC

Answer 3

Convex clavicle on Concave acromion

OPP

Question 4

GH

Answer 4

Convex humeral head on Concave glenoid

OPP

Question 5

Ulhohumeral

Answer 5

Concave Trochlear notch (ulna) on Convex trochlea of humerus

SAME

Question 6

Radiohumeral

Answer 6

Concave head of radius on Convex capitulum

SAME

Question 7

Proximal Radioulnar

Answer 7

Convex radial head on Concave radial notch (of ulna)

OPP

Question 8

Distal Radioulnar

Answer 8

Concave ulnar notch (of radius) on Convex ulnar head

SAME

Question 9

Radiocarpal

Answer 9

Convex proximal carpals (scaph, lun, quetrum) on Concave distal radius/Radial disc
OPP

Question 10

MCP 2-5

Answer 10

Concave phalanges on Convex MC

SAME

Question 11

PIP and DIP 2-5

Answer 11

Concave distal phalanges on Convex prox phalanges

SAME

Question 12

Hip

Answer 12

Convex femur on Concave acetabulum

OPP

Question 13

Tibiofemoral

Answer 13

Concave tibia on Convex femur

SAME

Question 14

Patellofemoral

Answer 14

Convex patella on Concave femur

OPP

Question 15

Proximal tibiofibular

Answer 15

Concave fibula on Convex tibia

SAME

Question 16

Distal tibiofibular

Answer 16

Convex fibula on Concave tibia

OPP

Question 17

Talocrural

Answer 17

Convex talus on Concave tib/fib

OPP

Question 18

Subtalar - ant/midd

Answer 18

Concave a/m calcaneus on Convex a/m talus

SAME

Question 19

Subtalar - post

Answer 19

Convex post calc on Concave post talus

OPP

Question 20

Intermetatarsal, MTP, IPs

Answer 20

All concave on convex

SAME

Question 21

TMJ

Answer 21

Convex mandible on Concave temporal bone

OPP