In the horse, this joint is formed between the tibia and talus only, since the distal end of the fibula is incorporated in the lateral malleolus of the tibia. There is communication with the proximal intertarsal joint. | In the horse, this joint is formed between the tibia and talus only, since the distal end of the fibula is incorporated in the lateral malleolus of the tibia. There is communication with the proximal intertarsal joint. |