Disclosed are systems, methods, and devices related to a cast portal. The cast portal can be for enabling selective access through a medical cast to a body part covered by the medical cast. One illustrative cast portal includes an interior portion that extends through an entire longitudinal length of the cast portal. The illustrative cast portal can also include an outer housing that defines the bounds of the interior portion. The outer housing can include a top end configured to be positioned distal to the body part covered by the medical cast. The outer housing can also include a bottom end configured to be positioned proximate to the body part covered by the medical cast. The illustrative cast portal can also include a protrusion extending radially outwardly from the outer housing and configured to mechanically couple with the medical cast for attaching the device to the medical cast.
