AANA19 Knee Access Pass-Microfracture Awl_ Tool of El Diablo-Dr. Jack M. Bert, M.D.

Microfracture Awl_ Tool of El Diablo-Dr. Jack M. Bert, M.D.

Video Transcription

Video Summary

The speaker discusses microfracture surgery for knee cartilage repair, highlighting its limitations in traditional form. Traditional microfracture using an awl penetrates only about 4mm, causing subchondral bone damage, cysts, and osteophyte formation, leading to poor long-term outcomes. Studies show deterioration after two years and reduced success for future cartilage procedures if traditional microfracture is used. Recent evidence favors a second-generation technique—nanofracture drilling with small diameter drills (≤1mm) that penetrate deeper than 6mm, reaching progenitor cells without damaging bone structure. Experts, including Dr. Brian Cole, now prefer this drilling method, which provides better, more durable cartilage repair results.

Keywords

microfracture surgery

knee cartilage repair

nanofracture drilling

subchondral bone damage

cartilage repair outcomes