How many degrees does the center line tilt to the head when shooting the axial position of calcaneus?

The tilt angle of the axial shooting center line of calcaneus to the head side is usually 10- 15 degrees.

The calcaneus is a part of the ankle joint, and the axial position of the calcaneus is to observe whether the ankle joint is abnormal. When the bone is photographed axially, the center line should be perpendicular to the ground. However, due to the low position of the ankle joint in the body, in order to better show the ankle joint, photographers usually tilt the midline slightly, about 10- 15 degrees to the head. This can better display the structure of calcaneus and ankle joint, which is convenient for doctors to check and judge.

When shooting calcaneus axially, if the center line is too squint, it may affect the doctor's judgment, so it can only be tilted within a certain range. At the same time, the photographer should also adjust according to the specific situation of the patient during the shooting process, such as height, weight, varicose veins of limbs and other factors will have an impact on the inclination angle of the midline.

It should be noted that the position and posture of the foot are also very important in bone axial photography, because different foot postures will affect the inclination angle of the center line. In order to ensure the shooting quality, patients should correctly adjust their feet and posture according to the doctor's requirements before shooting, and at the same time listen to the photographer's instructions and cooperate to complete the shooting.

Attention should be paid to the problem of pixels per inch in axial photography of calcaneus. For digital images, the higher the resolution, the denser the pixels and the better the image quality. In axial photography of bones, it is generally necessary to ensure a high enough pixel per inch, so that doctors can observe the changes of bone structure and joint tissue more accurately and help to judge the type and degree of diseases.

The role of axial photography of calcaneus

1. Whether there is ankle fracture: The appearance, details and types of fracture can be determined by axial projection of calcaneus.

2. Whether the joint space of ankle joint is normal: By observing the size and shape of joint space, we can judge whether there are problems such as articular cartilage wear, synovitis or rheumatoid arthritis in ankle joint.

3. Is there any foot valgus or foot varus: By observing the angle and position of calcaneus and ankle, you can determine whether the angle of foot is normal.

4. Whether there is tendon injury or other soft tissue injury: By observing the changes of soft tissue, we can judge whether there is tendon injury, muscle strain and other problems.