Based on Ayurvedic principles of Prasutitantra & Striroga (gynecology), injury to the Aartavavaha Srotas (channels carrying reproductive/menstrual blood) causes Vandhyatva (infertility).
The term "phalastrotas" in your query appears to be a variation or typo for Aartavavaha Srotas, and "anaata-va" corresponds to Aartava.