| A | B |
|---|
| radiocarpal joint | convex on concave |
| midcarpal joint | concvex on concave |
| thumb CMC add/abd | convex on concave |
| thumb CMC flex/ext | concave on convex |
| finger IP | concave on convex |
| wrist ext | carpals roll posteriorly and glide anteriorly |
| wrist flex | carpals roll anteriorly and glide posteriorly |
| radial deviation | carpals roll radially and glide ulnarly |
| ulnar deviation | carpals roll ulnarly and glide radially |
| flexion of PIP finger | rolls anteriorly and glides anteriorly |
| extension of PIP finger | roll posteriorly and glide posteriorly |
| resting position of hand | extension and ulnar deviation |
