Assessment of diastasis recti abdominis: Clinimetric properties of four measuring instruments.

Objective: The aim of the study was to determine the intra- and inter-rater reliability of palpation technique, digital calipers, and diastometer, as well as their concurrent validity against ultrasound imaging.

Methods: Ninety consenting parous women (20-45 years), recruited from a postnatal clinic in Enugu, Nigeria, participated in this observational study. Two physiotherapists and a sonographer measured their inter rectus distance at the level of the umbilicus, 4.