{"id":756,"date":"2025-07-31T09:26:13","date_gmt":"2025-07-31T01:26:13","guid":{"rendered":"https:\/\/preview.yhct.site\/577906b9\/?p=756"},"modified":"2025-10-22T16:53:18","modified_gmt":"2025-10-22T08:53:18","slug":"how-weightbearing-cone-beam-ct-is-saving-time-in-orthopaedics","status":"publish","type":"post","link":"https:\/\/preview.yhct.site\/577906b9\/news\/how-weightbearing-cone-beam-ct-is-saving-time-in-orthopaedics\/","title":{"rendered":"How Weightbearing Cone Beam CT is Saving Time in Orthopaedics"},"content":{"rendered":"

1. Full Spine Measurements<\/strong><\/p>\n

On an AP\u00a0view\u00a0X-ray, identify the upper and lower end vertebrae. Draw lines along their respective endplates and measure the intersecting angle or\u00a0perpendiculars,\u00a0i.e., Cobb’s angle.<\/p>\n

Vertebral Rotation\u00a0Angle\u00a0(Nash-Moe Method):<\/strong>
\nGraded based on pedicle displacement on\u00a0AP view\u00a0X-rays.
\nTime: 2\u20133 minutes per vertebra.<\/p>\n

Axial CT Rotation Measurements:<\/strong>
\nAssess pedicle\u2013rib angle or vertebral\u2013spinous process angle.
\nTime: 5\u201310 minutes for full spine\u00a0(requires multi-slice reconstruction).<\/p>\n

 <\/p>\n

2.Full Lower Limb Measurements<\/strong><\/p>\n

Functional Lower Limb\u00a0Length:<\/strong>
\nDistance from femoral head center to ankle joint center on\u00a0erect position\u00a0radiology.
\nTime: 1\u20132 minutes (Bilateral comparison)<\/p>\n

Mechanical Axis Deviation (MAD):<\/strong>
\nVertical distance from the knee joint center to the line connecting the femoral head center and ankle joint center.
\nTime: 2\u20133 minutes\u00a0(Magnification calibration required\u00a0)<\/p>\n

Hip\u2013Knee\u2013Ankle Angle (HKA):<\/strong>
\nAngle between mechanical axes of femur and tibia.
\nTime: 3\u20134 minutes\u00a0(Precise joint center identification required)<\/p>\n

 <\/p>\n

3.Knee Joint Measurements<\/strong><\/p>\n

Femorotibial Angle (FTA):<\/strong><\/p>\n

To evaluate\u00a0Genu Varum\u00a0(bow\u00a0legs\u00a0or knock\u00a0knees).<\/p>\n

On\u00a0erect position\u00a0radiology, draw the femoral mechanical axis (from the center of the femoral head to the knee joint) and the tibial mechanical axis (from the center of the knee joint to the ankle joint). Measure the lateral angle between these two axes.<\/p>\n

Femoral Torsion\u00a0Angle:<\/strong>
\nCT-based angle between femoral neck axis and the posterior tangent line of the femoral condyle\u00a0(transverse position + 3D reconstruction required).
\nTime: 5\u20138 minutes per side<\/p>\n

 <\/p>\n

4.Hip Joint Measurements<\/strong><\/p>\n

 <\/p>\n

5.Foot & Ankle Measurements<\/strong><\/p>\n

Automatic\u00a0Measurement System: Precision Meets Efficiency<\/strong><\/p>\n