1 00:00:06,490 --> 00:00:13,009 This video is going to demonstrate three projections of the hand, a PA, PA oblique, and lateral. 2 00:00:13,869 --> 00:00:18,510 Have the patient seated at a 90 degree angle to the table, shielded. 3 00:00:19,949 --> 00:00:25,629 I'm going to place the hand, palm or surface down, flex the elbow. 4 00:00:28,410 --> 00:00:33,570 Separate the digits slightly so there's no superimposition of the soft tissues. 5 00:00:33,570 --> 00:00:39,570 The hand will be centered to the image receptor at the third metacarpophalangeal joint. 6 00:00:39,570 --> 00:00:45,570 The hand should be parallel to the long axis of the image receptor. 7 00:00:45,570 --> 00:00:55,570 We have a 40 inch SID and a 10x12 or if you have an 8x10 use the smallest IR available. 8 00:00:55,570 --> 00:01:00,570 The central ray is perpendicular to the third MCP. 9 00:01:00,570 --> 00:01:10,709 This is a left hand, so we'll place the left marker lateral to the extremity. 10 00:01:10,709 --> 00:01:16,810 The next projection will be a PA oblique projection of the hand. 11 00:01:16,810 --> 00:01:23,750 We're going to rotate so that the metacarpals are 45 degrees to the image receptor. 12 00:01:23,750 --> 00:01:33,349 Make sure that the digits are parallel to the IR so that the interphalangeal joints 13 00:01:33,349 --> 00:01:39,030 are open and there's no foreshortening or distortion of the phalanges. 14 00:01:39,030 --> 00:01:47,189 The hand is still centered to the third metacarpophalangeal joint and the central ray is perpendicular 15 00:01:47,189 --> 00:01:50,189 to the third MCP. 16 00:01:50,189 --> 00:02:00,120 Again, place the left marker lateral to the extremity. 17 00:02:00,120 --> 00:02:07,439 The third and final projection of the hand is going to be a lateral projection, and it's 18 00:02:07,439 --> 00:02:13,259 a lateral medial, so the ulnar surface is down. 19 00:02:13,259 --> 00:02:22,490 We're going to do the fan lateral, so we'll separate the digits, make sure that they are 20 00:02:22,490 --> 00:02:32,889 extended so that the IP joints or the interphalangeal joints are open, metacarpal superimposed, and 21 00:02:32,889 --> 00:02:46,000 the central ray enters the second MCP. It's a lateral projection, so this time we'll place 22 00:02:46,000 --> 00:02:49,000 the left marker anterior to the extremity.