Clinical Implications caused by the agenesis of the RectusAbdominal Muscle’s (MRA) inferior venter

The rectus abdominal muscle is part of the anterior abdominal wall, having three to six bellies. In only oneof the 106 dissections already made in the “Faculdade de Ciências Médicas de Minas Gerais” AnatomyLaboratory was found a male cadaver who did not have inferior venter of this muscle bilaterally. Instead, at theleft side, was found a tendon that measured 5.5 cm laterally and 12 cm medially, and at the right side, therewas the same variation with a 15.5 cm length tendon, rising in the upper branch of the pubis and crest pubis.Despite being a rare variation, individuals who have showed it have increased potential for physiological andsurgical complications, in case they need interventions using inferior rectus abdominis muscle venter’s snips.

Anomalous origin of the Abductor Pollicis Longus (APL): clinical and surgical applications

The Abductor Pollicis Longus (APL) is known to have a big variety in its number of insertion tendons.Because of that, studies about variations in its origin are not frequently achieved like studies about its insertionforms. This study describes an anatomic variation of the Abductor Pollicis Longus, with an anomalous venteroriginated of the inferior portion of the lateral border of the radio. Surgical and clinical implications are inrelation principally with the big number of tendons of insertion of the APL, but there are related cases inthe literature in that additional venter of this muscle also can be involved in the physiopathology of clinicalsyndromes, like the tenosynovitis of de Quervain