Complex sentence: The posterior ligament of the lateral malleolus (posterior tibiofibular ligament, posterior inferior ligament), smaller than the anterior ligament of the lateral malleolus, is disposed in a similar manner on the posterior surface of the syndesmosis.
Split into simpler sentences: The posterior ligament of the lateral malleolus (posterior tibiofibular ligament, posterior inferior ligament). It is smaller than the anterior ligament of the lateral malleolus and is disposed in a similar manner on the posterior surface of the syndesmosis.