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The ankle joint consists of the tibiofibular, talocrural and subtalar joints. The tibiofibular joint is connected by the anterior tibiofibular, posterior tibiofibular, inferior transverse ligament and interosseous membrane. The talocrural joint located between the talus, the medial malleolus of the distal tibia, and lateral malleolus of the distal fibula. The subtalar joint is an articulation between the talus and calcaneus. The medial ligament complex consisting of the tibionavicular, tibiocalcanean, posterior tibiotalar and anterior tibiotalar ligaments is very strong. The lateral side has several separated ligaments, including the anterior talofibular, calcaneofibular, posterior talofibular ligament. The key muscles surrounding the ankle are peroneal muscles (longus and brevis), triceps surae, and anterior / posterior tibialis.
Common problems | Ankle sprain | Achilles tendonitis
Common problems
Over 80% of the population suffers from ankle and foot problems, ankle sprain being the most common. The lateral ligaments are easily injured during recreational and sports activities because they are weaker than the medial ligaments. The bony structures act as a barrier against eversion. Peroneal muscle sprain, Achilles tendinitis, and fracture are very commonly seen with severe ankle sprain and over-use syndrome. Higher ankle sprain is a sprain over the malleolus level reaching the interosseous membrane. Bony spur is a degenerative sign resulting from repetitive or over-loading activity. Another common problem associated with the foot is Plantar Fasciitis.

The ankle orthosis offers gentle pressure and motion control to help prevent further strains or sprains.