The angle of Gissane, also known as the calcaneal angle, is an important measurement in foot and ankle radiology. It is formed by the intersection of the calcaneal surface and the talonavicular joint. This angle provides valuable information about the alignment and stability of the hindfoot.
In a normal foot, the Gissane angle is typically between 120-145 degrees. A smaller angle may indicate a cavovarus foot deformity, where the arch of the foot is unusually high and the hindfoot is angled inward. Conversely, a larger angle may suggest a planovalgus foot deformity, characterized by a low arch and excessive pronation of the hindfoot.
Measuring the Gissane angle is essential in diagnosing and monitoring various foot and ankle pathologies, such as fractures, ligamentous injuries, and arthritis. It can help healthcare providers determine the appropriate treatment plan and assess the effectiveness of interventions. Overall, understanding the angle of Gissane is crucial in evaluating foot biomechanics and ensuring optimal function and stability of the foot and ankle complex.
What are the benefits of sinus tarsi approach?
Compared with conventional treatment, sinus tarsi approach substantially decreased the risk of wound complications. In addition, K-wires can be inserted percutaneously, thus eliminating the need for the creation of a complete subcutaneous tunnel, which can avoid injuries to the peroneal tendons and the sural nerve.
What is the surgical approach for a calcaneal fracture?
In a classic “open” procedure, your surgeon will make an incision over your heel. The incision is likened to a hockey stick or large “L” where the overlying nerve and tendons are moved out of the way. The fracture fragments are restored to the best possible position and a plate and screws hold the fragments in place.
What is the modified sinus tarsi approach?
Modified tarsal sinus approach: a transverse incision is made 1.5 cm distally to the tip of the lateral malleolus along the calcaneal axis, starting from the base of fourth metatarsal to 1 cm anterior of Achilles tendon.
What is the surgical approach to a calcaneus fracture?
For the standard open approach, a hockey stick or “L” incision is made on the outside of the heel. The sural nerve and the peroneal tendons are moved out of the way and the skin is held back by placing wires in key positions.
