Usefulness Evaluation of Merchant Auxiliary Equipment of Body Type Changing Suitable for X-ray Table Integral Type

Abstract

The purpose of this study was to evaluate of the usefulness and to develop new auxiliary equipment that can bending angle of the bone of the knee various depending on the thickness of the thigh of the human. The subjects agreed for research purposes and were selected from normal person who do not have past knee-related diseases and grouped thin group A and thick group B for the thigh. We set in order to obtain images in the axial direction of the bones of the knee, 35° to increase by 5° angle of knee flexion, 45°, to 55°, and we performed combinations of 9 tests by incident angle X-ray per each angle, 40°, 50° and 60°. As a result, we have developed an Merchant auxillary equipment of X-ray table integral type in radiographic images which was easy to use and could take images of various integral knee joint angles adjusting different body types. Using the auxiliary equipment, in the case of X-ray incident angle 50° and 60° with the knee flexion angle of 40° in group A, and in group B, Knee flexion angle of 45° and 35°, the X-ray incident angle at 60°, excellent images were derived. Future, it would be very useful in the examination of patients with a variety of body types.

Development of an Auxiliary Device for Patellar and Femoral Joint Tangential Axial Radiographic Imaging and a Method for Obtaining an Optimal Radiographic Image Using the Development

“…However, conventional radiography methods have several disadvantages. First, although the Settegast and Hughston methods are relatively frequent in the clinical setting because of the relatively short procedure time, the required prone position and knee flexion may be difficult in patients complaining of pain from patellar fracture or dislocation [3,[16][17][18]. In the prone position, the patellar area comes into contact with the examination table and a load is applied; this may worsen the pain in the area near the knee and should be avoided [3,17].…”

“…First, although the Settegast and Hughston methods are relatively frequent in the clinical setting because of the relatively short procedure time, the required prone position and knee flexion may be difficult in patients complaining of pain from patellar fracture or dislocation [3,[16][17][18]. In the prone position, the patellar area comes into contact with the examination table and a load is applied; this may worsen the pain in the area near the knee and should be avoided [3,17]. Second, the Laurin and Merchant methods are radiographic methods that can be used to diagnose patellar-femoral joint disease in a sitting or supine position without the need to prone.…”

A Study on the Development and Application of Patellofemoral Joint Radiography Auxiliary Device for Tangential Axial Radiography of the Patellar and Patellofemoral Joints

“…However, conventional radiography methods have several disadvantages. First, although the Settegast and Hughston methods are relatively frequent in the clinical setting because of the relatively short procedure time, the required prone position and knee exion may be di cult in patients complaining of pain from patellar fracture or dislocation [3,[16][17][18]]. In the prone position, the patellar area comes into contact with the examination table and a load is applied; this may worsen the pain in the area near the knee and should be avoided [3,17].…”

“…First, although the Settegast and Hughston methods are relatively frequent in the clinical setting because of the relatively short procedure time, the required prone position and knee exion may be di cult in patients complaining of pain from patellar fracture or dislocation [3,[16][17][18]]. In the prone position, the patellar area comes into contact with the examination table and a load is applied; this may worsen the pain in the area near the knee and should be avoided [3,17]. Second, the Laurin and Merchant methods are radiographic methods that can be used to diagnose patellofemoral joint disease in a sitting or supine position without the need to prone.…”