BACKGROUND: Postpartum low back pain (LBP) is a frequently occurring musculoskeletal condition among women hip motion ranges could alter lumbopelvic mechanics due to the presence of biomechanical associations between both regions. PURPOSES: This study aimed at determining the effect of correcting limited hip internal rotation on postpartum low back pain. MATERIALS AND METHODS: Forty multiparous women complaining of LBP postpartum with ages ranging from 20 to 35 years, and a body mass index of 30 kg/m2 were included in this randomized single-blind controlled trial after at least three months from delivery. They were selected from Shobrakheet public hospital outpatient clinic. They were randomly divided into two equal groups; the control group (A) received a program of stabilization exercises, three sessions per week for eight weeks, and the study group (B) received the same stabilization exercises program added to internal rotation exercises for the hip joint. Evaluation of the study outcomes was done using the Oswestry disability index (ODI), and the visual analog scale (VAS) before and after the interventions. RESULTS: Forty multiparous women were included with mean +/- standard deviation (SD) for the age (years) and BMI (kg/m2) of 27.3 +/- 3.9 and 27.9 +/- 6.7, respectively for the control group and 26.7 +/- 4.2 and 26.12 +/- 4.1, respectively for the study group, with no significant difference (p < 0.05) between both groups in any of the demographics. Analysis has shown statistically significant differences (p < 0.001) in all study outcomes comparing pre-to post-study results in both groups. On comparing both groups post treatment, there was a statistically significant (p < 0.001) decrease in ODI and VAS in favor of the study group. CONCLUSIONS: Adding hip internal rotation exercises to the conventional program of stabilization exercises could have a clinical impact on reducing LBP in postpartum women.

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