SubtalarGelenke

The subtalar joint, also known as the talocalcaneal joint, is a complex articulation in the ankle and foot. It is formed between the posterior facet of the talus (the ankle bone) and the superior facet of the calcaneus (the heel bone). This joint plays a crucial role in the movements of the foot, particularly inversion and eversion.

Inversion refers to the turning inward of the sole of the foot, while eversion is the outward turning. These movements are essential for balance, shock absorption, and adapting to uneven surfaces during walking and running. The subtalar joint is a synovial joint, allowing for a range of motion that is limited by surrounding ligaments.

The stability of the subtalar joint is maintained by a network of strong ligaments, including the deltoid ligament complex on the medial side and the lateral collateral ligaments on the lateral side. Injuries to these ligaments, such as sprains, can lead to instability and pain in the ankle and heel.

Conditions affecting the subtalar joint can include arthritis, osteochondral defects, and fractures. Symptoms may include pain, swelling, stiffness, and difficulty with weight-bearing. Diagnosis often involves physical examination, imaging studies like X-rays or MRI, and sometimes diagnostic injections. Treatment options vary depending on the specific condition and can range from conservative measures like rest, physical therapy, and orthotics to surgical interventions for more severe cases.