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OVERVIEW:

This compression wrap is great to help reduce or prevent further swelling to the foot ankle and lower leg. This can be utilized for a plethora of injuries including but not limited to a lateral ankle sprain, medial ankle sprain, high ankle sprain, mid-foot sprain, lower leg contusion or strain. There is an optional horseshoe that can be placed around the lateral or medial malleolus to assist in edema reduction.

ANATOMY:

A lateral ankle sprain can either occur to the ATFL (anterior talofibular ligament), CFL (calcaneal fibular ligament), or the PTFL (posterior talofibular ligament). When a person sprains their ankle it is more common to the ATFL.
The ankle has inert and contractile support. Muscle strains to the peroneal/ fibularis muscles can also occur simultaneously with an ankle sprain. Each joint in the body has surrounding muscles for additional support and for the ankle they are the Fibularis Tertius, Longus and Brevis.
The Fibularis Longus and Brevis assist the ankle in plantar flexion and eversion. The Fibularis Tertius' action is to dorsiflex and evert the ankle joint.
If the medial structures are involved, the deltoid ligament may be the first structure that comes to mind. Not as common as the ATFL but an injury to the deltoid ligament and also occur.
Structures injured with a high ankle sprain include the syndesmosis and the anterior tibiofibular ligament. The syndesmosis is the connective tissue between the fibula and tibia in the lower leg. The anterior tibiofibular ligament connects the distal tibia and fibula together. The ATFL and syndesmosis help prevent the tibia and fibula separating especially when the ankle is in a dorsiflexed position.

MECHANISM OF INJURY:

For a lateral ankle injury to occur the ankle joint is forced into a plantarflexed and inverted position. This position puts the most stress on the lateral structures of the ankle.
For a medial ankle sprain, the foot will be forced into a dorsiflexed and everted position (which puts stress on the deltoid ligament).
A high ankle sprain can have the same mechanism of a medial ankle sprain but the structures involved are the anterior tibiofibular ligament and the syndesmosis.

A pdf document with step by step instructions with specific materials needed can be found on the The University of West Alabama (UWA) athletic training page

http://at.uwa.edu