<unk>  is an occasional tendinous connection between the flexor pollicis longus and the flexor digitorum profundus of the index, the middle finger or both. It is found in around 21% of the population. It is an anatomical<unk>  in human, which may be viewed as a pathology if causes symptoms. It was recognised as early as the 1800s, but was first described by<unk>  and<unk>  in 1979.
Linburg–Comstock variation
Spaghetti plot
Patlak plot
Preston curve
Lewis offset
Isotropic bands
J wave
Wells curve