Introduction to Ultrasound Examination of the Hand and upper Ultrasound of upper ext. Upside ¾ Convenient ¾ Opens another exam dimension ¾ Can be Emil Dionysian, M.D. like a “stethoscope” stethoscope” ¾ Helps “3-D visualization” visualization” ¾ Allows Dynamic , Functional exam Up side ¾ ¾ Immediate, and more practical than MRI Great patient pleaser Intraoperative use ¾ ¾ Available in OR (Anesthesia work room) Loose body Down side ¾ ¾ New technology Time: 55-10 min/pt. or more z ¾ Musculoskeletal Ultrasound ¾ ¾ Less with more experience z z Learning curve: z z z Take a course Pattern Recognition But we are the ones who know the anatomy who else? Special high resolution transducer Expense ¾ ¾ ¾ $30$30-80K More functions more money! Room in the office “The new fluroscan” fluroscan” Image Handling 1 Ultrasound in Upper extremity Shoulder/arm z Elbow ¾ Rotator cuff pathology ¾ ¾ z Biceps distal and proximal ¾ Triceps attachment Collateral ligaments Ulnar nerve location, subluxation Lateral and medial muscle attachments Triceps attachment Lateral elbow Lateral elbow Medial elbow 2 Hand and wrist UTS evaluation ¾ ¾ ¾ Mass Ligaments Tendon: z z z ¾ ¾ Mass in the palm Location Subluxation Rupture Foreign Bodies Vessel: z z Size Location Thumb MP Ligaments UCL tear detection ¾ Journal Radiology May 2010 ¾ M.Nozian,et al ¾ 69 UCL tear suspected and had US ¾ 43 had surgery ¾ 37 out of 43 had correct dx. ¾ 6 false positive ¾ Lee J C , Healy J C Radiographics 2005;25:1577-1590 Figure 1b. Normal sonographic appearance of tendons in the wrist. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 1a. Normal sonographic appearance of tendons in the wrist. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 3 Transverse sonogram through the anatomic snuffbox shows the tendons of the first extensor compartment: the extensor pollicis brevis (EPB) and the abductor pollicis longus (APL). Volar Wrist Ganglion and the artery Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Transverse sonogram shows the second extensor compartment, which contains the extensor carpi radialis brevis (ECRB) and longus (ECRL) tendons. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Anisotropy artifact. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Transverse sonogram shows the extensor surface of the wrist at the level of the distal carpal row, with a normal small volume of anechoic synovial fluid in the tendon sheath between the extensor tendons. Figure 4a. Normal sonographic appearance of nerves. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 4 Normal sonographic appearance of nerves. Carpal Tunnel Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Transverse sonogram shows the third extensor compartment, which contains the extensor pollicis longus (EPL) tendon, and its location between the neighboring extensor digitorum (ED) and extensor carpi radialis brevis (ECRB) tendons. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 9. Transverse sonogram shows the third through the fifth extensor compartments. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 8. Transverse sonogram shows the fourth extensor compartment. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Transverse sonogram shows the sixth extensor compartment, which contains the extensor carpi ulnaris (ECU) tendon and sheath. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 5 ECU motion with supination ECU subluxation ¾ Ulnar artery pronation neutral supination Transverse sonogram shows the dorsal aspect of the proximal carpal row, just distal to the level of the Lister tubercle. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 12. Transverse sonogram at the same level as Figure 11 but on the ulnar side of the dorsal carpus shows the echogenic dorsal aspect of the lunatotriquetral ligament and, above it, the extensor digiti minimi (EDM) tendon. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 13a. Sonographic examination of the ulnar surface of the wrist. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 6 Figure 13b. Sonographic examination of the ulnar surface of the wrist. Wrist ligament and TFC tears ¾ Skeletal radiology 2003 ¾ Finlay,K. et al from Canada ¾ 26 pt. with wrist pain with tri comp. arthrog ¾ 10/10 SS-L lig tear US and Arthorgram ¾ 2/8 lunotriq. and 7/10 TFC tears on UTS ¾ Intermediate accuracy for TFC tears Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Sonographic appearance of the dorsal extensor hood of the finger. Figure 15b. Sonographic appearance of the dorsal extensor hood of the finger. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Sonographic appearance of the dorsal extensor hood of the finger. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America ©2005 by Radiological Society of North America Normal sonographic appearances of the carpal tunnel. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 7 Normal sonographic appearances of the carpal tunnel. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 17. Transverse sonogram of the carpal tunnel shows the location of the flexor carpi radialis (FCR) tendon within the lateral part of the flexor retinaculum. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 18b. Sonographic appearance of the long flexor tendons in the palm. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 18a. Sonographic appearance of the long flexor tendons in the palm. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 19a. Sonographic appearances of the long tendons of the finger, the flexor digitorum superficialis (FDS) and flexor digitorum profundus (FDP). Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 8 Figure 19b. Sonographic appearances of the long tendons of the finger, the flexor digitorum superficialis (FDS) and flexor digitorum profundus (FDP). Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 20. Longitudinal sonogram shows the insertion site of the flexor digitorum superficialis tendon at the base of the middle phalanx. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America FPL over prox. phalanx Figure 19c. Sonographic appearances of the long tendons of the finger, the flexor digitorum superficialis (FDS) and flexor digitorum profundus (FDP). Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 21a. (a) Longitudinal sonogram shows the insertion of the flexor digitorum profundus (FDP) tendon onto the base of the terminal phalanx. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 21b. (a) Longitudinal sonogram shows the insertion of the flexor digitorum profundus (FDP) tendon onto the base of the terminal phalanx. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 9 FDP and FDS at MP FPL repair 4 wks ¾ Repair side FDP intact / laceration ¾ Intact ¾ Normal contralateral FDP at PIP level intact ¾ missing missing Digital Annular Pulley Figure 22a. Transverse (a) and longitudinal (b) sonograms through the thenar eminence show the relationship of the echogenic flexor pollicis longus tendon to the short muscles of the thumb. ¾ Skeletal radiology 2000 ¾ Martinoli,C. et al ¾ US detected 8/9 DAP rupture ¾ Indirect sign of volar bowstringing Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 10 Figure 22b. Transverse (a) and longitudinal (b) sonograms through the thenar eminence show the relationship of the echogenic flexor pollicis longus tendon to the short muscles of the thumb. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 24. Transverse sonogram at the level of the proximal part of the proximal phalanx shows the second annular pulley as a hypoechoic thickening of the flexor sheath that extends to the sides of the base of the proximal phalanx. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 23. Transverse sonogram of the Guyon canal, obtained by using the linear-array transducer in sector mode for a wider field of view, shows the presence of a normal variant accessory muscle that may be associated with compression of the adjacent ulnar nerve. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 25. Longitudinal sonogram of the finger at the level of the proximal phalanx shows the second annular pulley as a thin hyperechoic line (arrows) superficial to the long flexor tendons. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America Figure 26. Transverse sonogram of the finger at the level of the head of the middle phalanx shows the fifth annular pulley, which covers the flexor digitorum profundus (FDP) tendon at a point just proximal to the distal interphalangeal joint, as well as several vessels in a location superficial to the pulley. Lee J C , Healy J C Radiographics 2005;25:1577-1590 ©2005 by Radiological Society of North America 11