[TA] common tendon of insertion of the transversus and internal oblique muscles into the crest and tubercle of the pubis and iliopectineal line; it is frequently largely muscular rather than aponeurotic and may be poorly developed; forms posterior wall of medial inguinal canal. SYN: falx inguinalis [TA], conjoint tendon*, tendo conjunctivus*, conjoined tendon, falx aponeurotica, inguinal aponeurotic fold.