During pregnancy and the postpartum period, 75% of pregnant women experience minor problems. Although these problems are not directly lifethreatening to women or their babies, they can significantly affect their daily lives. Low back pain and urinary incontinence are most prevalent and are linked to mental health issues. The prevalence of perinatal depression and anxiety disorders ranges from 5-20% and 15-20%, respectively. Physical therapists can potentially improve mental health by alleviating physical symptoms through interventions based on detailed individual assessments and clinical reasoning. Previous studies have reported an association between physical symptoms and mental health. Pregnancy and childbirth, while generally positive experiences, also involve significant changes and potential losses, which affect the lives of women and their families. Prevention and early interventions are important for assessing adaptation to these changes. Future studies should focus on the development of research and education in Japan. It is anticipated that proper management of minor prenatal and postpartum problems will improve both the physical and mental health of women.

[Objective] The purpose of this report is to present a case in which a patient’s right buttock pain was improved by Mulligan’s manual therapy targeting the sacroiliac joint. [Subject] The patient was a male in his 70s; he was a resident of New Zealand and was scheduled to return to New Zealand in half a month. He experienced right buttock pain when lifting a heavy object while gardening and was diagnosed with lumbar spinal stenosis. The patient’s main complaint was buttock pain around the right posterior superior iliac spine and numbness on the lateral side of the right lower leg. A total of seven interventions were performed over a period of 20 days. [Clinical Reasoning] A problem with the tissues around the sacroiliac joint was suspected as the cause of the right buttock pain, and an evaluation was performed using a method that would not increase the pain. Mobilization with Movement (MWM), one of the Mulligan techniques, was used to emphasize the posterior rotation of the right ilium, and pain relief was expected. [Results] The pain disappeared when sitting and standing, and the patient no longer had any problems with daily life. [Conclusion] In this case, the Mulligan concept for the sacroiliac joint was effective, and the right buttock pain improved. In addition, instructing the patient on self-exercises suited to his needs helped to sustain the effects of the intervention.