Concave-Convex Rules for UE- NPTE Review

In what direction are the roll and glide of a convex on concave joint?

OPPOSITE

In what direction are the roll and glide of a concave on convex joint?

SAME

T/F A convex surface moving on a concave surface will roll and slide in the opposite direction

TRUE

T/F A convex surface moving on a concave surface will roll and slide in the same direction

FALSE, opposite

T/F A concave surface moving on a convex surface will roll and slide in opposite directions

FALSE, same

T/F A concave surface moving on a convex surface will roll and slide in the same direction

TRUE

In SC elevation, name the direction of the roll and slide

roll superior

slide inferior

In SC depression, name the direction of the roll and slide

roll inferior

slide superior

In SC protraction, name the direction of the roll and slide

roll anterior

slide anterior

In SC retraction, name the direction of the roll and slide

roll posterior

slide posterior

During what motions will the SC joint be concave on convex? What does that mean regarding the arthrokinematics?

In protraction and retraction; the roll and slide will be in the same direction in this plane

What surfaces are concave and convex in the GH joint? How does this affect the arthrokinematics of the joint?

The humerus is convex and the glenoid is concave. This means the roll and slide will be in opposite directions

In GH flexion, name the direction of the roll and slide

roll anterior

slide posterior

Which of the following BEST describes the arthrokinematics of the GH joint in flexion:

a) roll superiorly, slide inferiorly

b) roll inferiorly, slide superiorly

c) roll anteriorly, slide posteriorly

d) roll posteriorly, slide anteriorly

c) roll anteriorly, slide posteriorly

Describe the arthokinematics of the GH joint in extension

roll posteriorly

slide anteriorly

Which of the following BEST describes the arthokinematics of the GH joint in extension:

a) roll posteriorly, slide posteriorly

b) roll anteriorly, slide posteriorly

c) roll inferiorly, slide superiorly

d) roll posteriorly, slide anteriorly

d) roll posteriorly, slide anteriorly

T/F In GH flexion, the humerus will roll anteriorly and slide posteriorly on the glenoid

TRUE

T/F In GH flexion, the humerus will roll posteriorly and slide anteriorly on the glenoid

FALSE

T/F In GH extension, the humerus will roll posteriorly and slide anteriorly on the glenoid

TRUE

T/F In GH extension, the humerus will roll anteriorly and slide posteriorly on the glenoid

FALSE

Describe the arthrokinematics of GH ABD

roll superior

slide inferior

Describe the arthrokinematics of GH ADD

roll inferior

slide superior

Which of the following BEST describes the arthrokinematics of GH ABD?

a) roll anterior, slide posterior

b) roll posterior, slide anterior

c) roll inferior, slide superior

d) roll superior, slide inferior

e) roll inferior, slide inferior

d) roll superior, slide inferior

Which of the following BEST describes the arthrokinematics of GH ADD?

a) roll inferior, slide superior

b) roll superior, slide inferior

c) roll anterior, slide posterior

d) roll superior, slide superior

a) roll inferior, slide superior

Describe the arthrokinematics of GH IR

roll anterior

slide posterior

Describe the arthrokinematics of GH ER

roll posterior

slide anterior

Which of the following BEST describes the arthrokinematics of GH IR?

a) roll posterior, slide anterior

b) roll inferior, slide superior

c) roll anterior, slide posterior

d) roll superior, slide inferior

c) roll anterior, slide posterior

Which of the following BEST describes the arthrokinematics of GH ER?

a) roll posterior, slide anterior

b) roll inferior, slide superior

c) roll anterior, slide posterior

d) roll superior, slide inferior

a) roll posterior, slide anterior

Describe the arthrokinematics of GH horizontal ABD

roll posterior, slide anterior

Describe the arthrokinematics of GH horizontal ADD

roll anterior, slide posterior

Which of the following BEST describes the arthokinematics of GH horizontal ABD?

a) roll superior, slide inferior

b) roll inferior, slide superior

c) roll anterior, slide posterior

d) roll posterior, slide anterior

d) roll posterior, slide anterior

Which of the following BEST describes the arthrokinematrics of GH horizontal ADD?

a) roll superior, slide inferior

b) roll inferior, slide superior

c) roll anterior, slide posterior

d) roll posterior, slide anterior

c) roll anterior, slide posterior

Describe the arthrokinematics of ulnohumeral flexion

roll anterior

slide anterior

Describe the arthrokinematics of ulnohumeral extension

roll posterior

slide posterior

Describe the arthrokinematics of radiohumeral flexion

roll anterior

slide anterior

Describe the arthrokinematics of radiohumeral extension

roll posterior

slide posterior

What surfaces are concave and convex in the radiohumeral joint? How does this affect the arthrokinematics of the joint?

moving concave radius on convex humerus; roll and slide will be in the same direction

What surfaces are concave and convex in the ulnohumeral joint? How does this affect the arthrokinematics of the joint?

moving concave ulna on convex humerus; roll and slide will be in the same direction

What surfaces are concave and convex in the proximal radioulnar joint? How does this affect the arthrokinematics of the joint?

convex radius moving on concave ulna; roll and slide in opposite directions

Describe the arthrokinematics of the proximal radioulnar joint in forearm supination

roll posterior

slide anterior

Describe the arthrokinematics of the proximal radioulnar joint in forearm pronation

roll anterior

slide posterior

What surfaces are concave and convex in the distal radiounar joint? How does this affect the arthrokinematics of the joint?

concave radius moving on convex ulna; roll and slide in same direction

Describe the arthrokinematics of the distal radioulnar joint in forearm pronation

roll anterior

slide anterior

Describe the arthrokinematrics of the distal radioulnar joint in forearm supination

roll posterior

slide posterior

What surfaces are concave and convex in the radiocarpal joint? How does this affect the arthrokinematics of the joint?

convex carpals moving on concave radius; roll and slide in opposite directions

Describe the arthrokinematics of the radiocarpal joint in wrist flexion

roll anterior

slide posterior

Describe the arthrokinematics of the radiocarpal joint in wrist extension

roll posterior

slide anterior

Describe the arthrokinematics of the radiocarpal joint in ulnar deviation

roll ulnar

slide radial

Describe the arthrokinematics of the radiocarpal joint in radial deviation

roll radial

slide ulnar

What surfaces are concave and convex in the metacarpophalangeal joint? How does this affect the arthrokinematics of the joint?

concave proximal phalanx moving on convex metacarpals; roll and slide in same direction

Describe the arthrokinematics of the metacarpophalangeal joint in flexion

roll anterior

slide anterior

Describe the arthrokinematics of the metacarpophalangeal joint in extension

roll posterior

slide posterior