In extreme cases diastasis recti is corrected with a cosmetic surgery procedure known as an abdominoplasty by creating a plication, or folding, of the linea alba and suturing it together, which results in a tighter abdominal wall.

[7] Examination is performed with the subject lying on the back, knees bent at 90° with feet flat, head slightly lifted placing chin on chest.

Measurement of the width of separation is determined by the number of fingertips that can fit within the space between the left and right rectus abdominis muscles.

Separation consisting of a width of 2 fingertips (approximately 1 1/2 centimeters) or more is the determining factor for diagnosing diastasis recti.

[8] Diastasis recti can be diagnosed by physical examination, which may include measuring the distance between the rectus abdominis muscles at rest and during contraction at several levels along the linea alba.

[9] Diastasis recti is defined as a gap of about 2.7 cm or greater between the two sides of the rectus abdominis muscle.

[1] A 2018 review mentions other techniques in addition to strengthening exercises: postural training; education and training for proper lifting mechanisms; manual therapy (which includes soft tissue mobilization); myofascial release; Noble technique (i.e., manual approximation of abdominal muscles during partial sit-up); and abdominal bracing and taping.

[12] In extreme cases, diastasis recti is corrected with a cosmetic surgery procedure known as an abdominoplasty by creating a plication or folding of the linea alba and suturing together.