The mortise is a rectangular socket. The ankle is composed of three joints: the talocrural joint (also called talotibial joint, tibiotalar joint, talar mortise, talar joint), the subtalar joint (also called talocalcaneal), and the Inferior tibiofibular joint.
What is ankle mortise alignment?
Aligning the 5th toe to the center of the calcaneus is a practical way to gauge optimal internal rotation needed to demonstrate the mortise joint. Another way to ensure correct positioning is by rotating the leg internally until the central line of the collimation field is in line with the 5th metatarsal.
What is another name for the ankle mortise?
The tibial plafond, lateral malleolus, and medial malleolus form a mortise, a socket in which the talus sits (Figure 2).
How do you do a ankle mortise view?
Patient position
the patient may be supine or sitting upright with the leg straightened on the table.the leg must be rotated internally 15° to 20°, thus aligning the intermalleolar line parallel to the detector. internal rotation must be from the hip; isolated rotation of the ankle will result in a non-diagnostic image.
What does mortise mean in anatomy?
A depression, groove, or hole into which another anatomical structure fits.
What does a mortise view show?
The mortise view shows the entire mortise joint space between the talar dome and the medial malleolus, tibial plafond and lateral malleolus (Figures 1B and 2). On the AP view, the lateral malleolus overlaps and obscures the lateral joint space (Figure 1A).
What is disruption of ankle mortise?
Disruption of the medial deltoid ligament also causes instability. The proximal fibula may also be fractured (called a Maisonneuve fracture) when the medial malleolus is fractured, the ankle mortise (the joint between the tibia and the talus) is open, and the distal fibula is not fractured.
What bones make up the ankle mortise?
The ankle joint is a hinged synovial joint that is formed by the articulation of the talus, tibia, and fibula bones. Together, the three borders (listed below) form the ankle mortise. The superior portion of the ankle joint forms from the inferior articular surface of the tibia and the superior margin of the talus.
What is the ball on your ankle called?
Medial Malleolus: Bony bump on the inside of your ankle.
What are parts of the ankle called?
The medial malleolus, felt on the inside of your ankle is part of the tibia’s base.The posterior malleolus, felt on the back of your ankle is also part of the tibia’s base.The lateral malleolus, felt on the outside of your ankle is the low end of the fibula.
How is mortise view done?
The AP mortise view is done with the leg internally rotated 15-20o so that the x-ray beam is perpendicular to the inter-malleolar line. This view permits examination of the articular space (clear space).
What is ankle syndesmosis?
An ankle syndesmosis injury is a common cause of pain at the front (anterior) of your ankle. This injury is also referred to as a high ankle sprain as it affects the ligaments above the ankle joint.
What is mortise joint?
A mortise and tenon (occasionally mortice and tenon) joint connects two pieces of wood or other material. Woodworkers around the world have used it for thousands of years to join pieces of wood, mainly when the adjoining pieces connect at right angles.
What is the ankle mortise and talar dome?
Joint Anatomy. A majority of the articular surface is formed by the horizontal portion of the distal tibia (the tibial plafond) which extends parallel to the dome of the talus; taken with the medial and lateral malleoli, it forms a rectangular socket known as the ankle mortise.
Is it Mortice or mortise?
Both mortise and mortice are acceptable spellings of the same word in the UK and US. The term is based on the concept of carving out a space to form a strong link between the two pieces.
