Medial is a reference to WHERE it is.
Bone-on-bone usually refers to the cartilage being worn out in a joint, allowing bone to rub on bone, which is usually painful.
The most medial bone of the orbit is the ethmoid bone, specifically the ethmoidal labyrinth. This bone forms part of the medial wall of the orbit and helps separate the orbit from the nasal cavity.
Tibia is the medial bone of the lower extremity
The medial ankle projection is on the tibia bone. But the medial ankle projection is actually called medial malleolus.
The first metatarsal bone is in direct contact with the medial cuneiform bone in the foot.
lacrimal bone
The Lacrimal and Ethmoid bones
It is medial to the fibula.
The think lateral leg bone is the fibula. It is a non-weight bearing bone, but forms the lateral portion of your ankle joint.
The ulna is not a midline structure. It is, however, the most medial bone of the forearm.
The tibialis anterior inserts into the medial cuneiform bone and the base of the first metatarsal bone in humans.
The medial bone of the distal carpals is the pisiform bone. It is a small, pea-shaped bone located on the palmar aspect of the wrist. It articulates with the triquetrum bone and helps support the structure of the wrist joint.
The bone you are referring to is the ulna. It is one of the two bones in the forearm, located on the medial (little finger side) of the arm, next to the radius. The ulna plays a key role in stabilizing the arm and forming the elbow joint.