Why the use of leech did not successs in surgery?

The use of leeches in surgery largely failed due to the advent of modern medical techniques and the development of antibiotics and advanced surgical methods that provide more effective and controlled outcomes. While leeches can help with blood circulation and reduce swelling in specific situations, their unpredictable nature and the potential for infection outweighed their benefits in most surgical contexts. Additionally, the lack of standardized protocols for leech application made it difficult to integrate into contemporary surgical practice. Overall, the reliance on more reliable and efficient medical interventions rendered leech therapy largely obsolete.