condyloid
Oval articular surface
Condyloid describes anatomy shaped like a condyle—a rounded projection at the end of a bone that forms part of a joint.
A condyloid joint allows movement in two planes but not rotation, like the knuckle joints connecting fingers to the hand: the condyloid process of the mandible, condyloid articulation.
ellipsoidal
Having elongated spherical form
flexion · extension · abduction · adduction · synovial · cartilage · ligament · capsule · oval · convex
joint mobility/degrees of freedom
condyloidball-and-socket
Spherical joint allowing rotation
spheroidal · multiaxial · hinge · pivot · trochoid
articular surface shape
condyloidspheroidal
Approximately sphere-shaped
ball-and-socket · planar · flat · saddle · cylindrical