Assertion: elbow | /r/CapableOf | allow movement
Facets:
value: forward
type: MANNER
value: in the sagittal plane
type: LOCATION
Source sentences:
text: The elbow joint is a hinge joint because it only allows movement forward and backward (flexion and extension) in the sagittal plane.
text: Sandwiched between the humerus and the forearm, the elbow joint is a simple hinge joint that only allows two movements, namely extension and flexion.