[About three cases of median nerve compression inside the carpal tunnel (author's transl)].

The authors report about three cases of median nerve compression inside the carpal tunnel; they were caused by tendons or anomalous muscular bellies of the Palmaris Longus. The first two cases consider the anomalies of the distal insertion of the muscle, the third a volume anomaly; the first two findings allow to recall the hypothesis of a common philogenetic origin of the palmar aponeurosis and the Palmaris Longus.