Medial clear space of the ankle
The medial clear space (MCS) is a radiographic measure and defined as the space between the lateral edge of the medial malleolus and the medial side of the talus .
Usage
It is used in the prediction of deltoid ligament injury and in conjunction with the tibiofibular clear space (TFCS) the tibiofibular overlap (TFO) and the superior clear space in the diagnosis syndesmotic injury .
Measurement
The broadest distance between the lateral border of the medial malleolus and the medial side of the talar dome is measured usually parallel to the superior articular surface .
Interpretation
The medial clear space a horizontal distance of >4-5 mm has been considered abnormal . There is apparently a difference between male and female and in regard to height, which should be taken into account when indicating a diagnosis .
See also
