Inclusion Criteria:  nulligravida women with PCOS complaining of at least one year of infertility. They suffered from amenorrhea or oligo-menorrhea and subcapsular follicles. Their ages ranged from 20-35 years. Their BMI ranged from 30-35 kg/m². Their waist/hip ratio was ˃ 0.85. Their LH/FSH ratio was ≥ 1.5. They were from the same social class.  Exclusion Criteria:  history of heart disease, high cholesterol, l iver or kidney diseases, diabetes mellitus, hypertension, pregnancy, scarring, hernias, or skin diseases in the abdominal region that prevent the application of ultrasound cavitation