Malleolar a. : Of or pertaining to the malleolus; in the region of the malleoli of the ankle joint.

Example:
How long does it take to heal after a tri-Malleolar surgery?

Taxonomy
medial malleolus, Malleolus, lower extremity, bone, medial surface, free encyclopedia, subcutaneous, depression, Lateral malleolus, ankle, body, articular surface, tendons, summit, lateral side, condyles, pyramidal process, talus.

Defination from the web:
malleolar sulcus, directed obliquely downward and medialward, and occasionally double; this ... The posterior border is broad and presents the shallow malleolar sulcus, for the passage of the tendons of the Peronæi longus and brevis. ...