title: Ultrasonographic diagnosis of snapping annular ligament in the elbow.
abstract: Elbow snapping by annular ligament is rare and may be difficult to diagnose, when this Epub ahead of print condition is not familiar. We report a case of elbow snapping by annular ligament diagnosed by ultrasonography, which was confirmed by arthroscopic observation. The ultrasonographic findings were thickening of the annular ligament and snapping in and out of the radiocapitellar joint during elbow flexion and extension on dynamic ultrasonography.
authors.affiliation: Departments of Radiology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Jee Won
authors.identifier: 0000-0003-1630-1863
authors.initials: JW
authors.lastname: Chai
authors.affiliation: Departments of Radiology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Sujin
authors.identifier: 0000-0003-3816-9664
authors.initials: S
authors.lastname: Kim
authors.affiliation: Departments of Radiology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Hyun Kyong
authors.identifier: 0000-0002-6724-4902
authors.initials: HK
authors.lastname: Lim
authors.affiliation: Departments of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Kee Jeong
authors.identifier: 0000-0002-6254-7373
authors.initials: KJ
authors.lastname: Bae
keywords: Elbow joint; Ligaments; Ultrasonography