title: Variant course of extensor pollicis longus tendon in the second wrist extensor compartment.
abstract: Among the muscles involved in thumb movement, the extensor pollicis longus (EPL) tendon of the hand is considered the most consistent structure with the least variation among individuals. There have been a few reports regarding different types of supernumerary tendons; however, an abnormal course of the EPL tendon is extremely rare. We describe a case of a variant course of a single EPL tendon appearing in the second extensor compartment of the wrist. This case was observed incidentally during wrist surgery, and demonstrates a unique variation of tendon course, which has not been reported previously. The knowledge of this anatomic variation is helpful in surgical planning and for making accurate diagnoses.
authors.affiliation: Department of Orthopedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea.
authors.forename: Young Jun
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, Kyung Hee University Hospital at Gangdong, School of Medicine, Kyung Hee University, Seoul, Korea. ljhos69@naver.com.
authors.forename: Jae Hoon
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Orthopedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea.
authors.forename: Jong Hun
authors.initials: JH
authors.lastname: Baek
mesh_terms: D000293:Adolescent; D063405:Anatomic Variation; D006225:Hand / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D013710:Tendons / Q000002:abnormalities*; D014953:Wrist / Q000002:abnormalities*; D014954:Wrist Injuries / Q000601:surgery
keywords: Anatomical variation; Extensor compartment; Extensor pollicis longus; Wrist