It's hard to say exactly how long Kareem Abdul-Jabbar could have played with modern sports medicine technology since he was already an incredible athlete and had a long playing career of 20 seasons. However, a lot has changed when it comes to sports medicine in the past few decades.
Modern sports medicine technology can prevent and treat a range of injuries, from soft tissue injuries to bone fractures. With access to the latest treatments and rehabilitation techniques, athletes can recover faster and return to play sooner, potentially prolonging their careers.
Kareem Abdul-Jabbar also had access to physical therapy, nutrition, and conditioning programs during his playing days. With the advancements that have been made in sports science, specifically in understanding how the human body works and recovery from sports-related injuries, athletes now have much more robust programs tailored to their specific needs.
Ultimately, it's impossible to predict how long Kareem Abdul-Jabbar could have played with modern sports medicine technology. However, it is safe to say that with proper care and treatment, sports medicine can help athletes prolong their playing career.