Muscle most commonly affected by congenital absence is?
Pectoralis major and minor muscles are the most common congenitally absent muscles in humans. Ref: Ultrasound of the Musculoskeletal System, 2007, Pages 51, 285; Principles of Neurology By Allan H. Ropper, Raymond Delacy Adams, Maurice Victor, Robe H. Brown, Page 1245; Clinical Pediatric Urology By A. Barry Belman, Lowell R. King, Stephen Alan Kramer, Page 947
Pectoralis major
Semi membranosus
Teres minor
Gluteus maximus