Midterm OP Articular surfaces + Concave/Convex relationship

Question 1

Glenohumeral (Synovial ball and socket)

Answer 1

CONVEX head of humerus articulates with the CONCAVE glenoid fossa of the scapula

Question 2

Acromialclavicular (Synovial Planar)

Answer 2

CONCAVE acromion process of scapula articultes with the CONVEX lateral end of clavicle

Question 3

Sternoclavicular (Synovial Double Planar/Gliding)

Answer 3

Sternal end of the clavicle articulates with the clavicular notch of the manubrium. Incongruent due to four articulating surfaces so its CONVEX ON CONCAVE AND CONCAVE ON CONVEX

Question 4

Humeroulnar (Synovial Hinge)

Answer 4

CONCAVE trochlear notch of the ulna articulates with the CONVEX trochlea of the humerus

Question 5

Humeroradial (Synovial Modified ball and socket)

Answer 5

CONCAVE head of the radius articulates with the CONVEX capitulum of humerus

Question 6

Proximal radioulnar (Synovial Pivot)

Answer 6

CONVEX head of the radius articulates with the CONCAVE radial notch of the ulna

Question 7

Distal radioulnar (Synovial Pivot)

Answer 7

CONCAVE ulnar notch of radius articulates with CONVEX head of ulna

Question 8

Radiocarpal (Synovial Ellipsoid)

Answer 8

CONVEX proximal ends of scaphoid and lunate articulate with CONCAVE distal end of radius

Question 9

Ulnomenistriquetrial (Synovial Ellipsoid)

Answer 9

CONVEX proximal surface of triquetrium articulates with CONCAVE distal end of ulna

Question 10

Intercarpals (Synovial Planar)

Answer 10

CONCAVE/CONVEX vary in configuration. Name all proximal and distal carpals

Question 11

Carpometacarpal Joint Digit 1 (Synovial Saddle)

Answer 11

Base of metacarpal articulates with the trapezium. CONVEX on CONCAVE in sagittal plane. CONCAVE on CONVEX in coronal plane

Question 12

Metacarpophalangeal
Digit 2-5 (Synovial Condyloid)
Digit 1 (Synovial Hinge)

Answer 12

CONCAVE bases of proximal phalanges articulate with CONVEX head of metacarpals

Question 13

Acetabulofemoral (Synovial ball and socket)

Answer 13

CONVEX head of the femur articulates with CONCAVE acetabulum of pelvis

Question 14

Tibiofemoral (Synovial Modified Hinge)

Answer 14

CONCAVE condyles of tibia articulate with CONVEX femoral condyles

Question 15

Patellofemoral (Synovial Planar) 2 CONVEX/CONCAVE orientations.

Answer 15

CONCAVE superior and inferior surfaces and the CONVEX medial and lateral surfaces articulate with the patellar surface of the femur

Question 16

Proximal Tibiofibular (Synovial Planar)

Answer 16

CONVEX facet of the head of fibula and CONCAVE facet on the lateral condyle of tibia

Question 17

Talocrural (Synovial Hinge)

Answer 17

CONVEX trochlea of the talus articulates between the CONCAVITY formed by the medial and lateral malleoli and the distal end of the tibia

Question 18

Subtalar (Synovial Planar)

Answer 18

CONVEX facets on the superior surface of the calcaneus articulate with CONCAVE posterior, anterior and middle articular surface of calcaneus