calcaneonavicular

The calcaneonavicular joint is a synovial joint located at the base of the heel, where the calcaneus (heel bone) meets the navicular bone. This joint is crucial for the stability and function of the foot, particularly during weight-bearing activities. It allows for a range of motion that includes plantar flexion, dorsiflexion, and inversion and eversion.

The calcaneonavicular joint is typically stable due to its structure and the surrounding soft tissues. It is reinforced by ligaments, including the plantar calcaneonavicular ligament and the spring ligament, which help to resist inversion and eversion forces. Additionally, the joint is supported by the cuboid bone, which forms a stable triangle with the calcaneus and navicular, further enhancing its stability.

Injuries to the calcaneonavicular joint can occur due to trauma, such as falls or sudden impacts, or from repetitive stress, such as in athletes. Common injuries include sprains, which can lead to pain, swelling, and limited mobility. In severe cases, fractures of the calcaneus or navicular may occur, requiring surgical intervention.

Diagnosis of calcaneonavicular joint injuries often involves a physical examination, imaging studies such as X-rays or MRI, and sometimes arthroscopy. Treatment options range from conservative measures like rest, ice, compression, and elevation (RICE) to more invasive procedures such as surgery, depending on the severity of the injury. Rehabilitation programs may be necessary to restore function and prevent future injuries.