I saw a TV special on physical therapists who use a computer program to show results before and after total knee replacements. The system could even measure how hard you’re stepping when walking. I’ve had two knee replacements. I’ve never seen anything like this. Why don’t more PTs use this kind of program?

Most of the work done to analyze gait and walking patterns is done in special laboratories. The equipment is fairly specific and very expensive.

Researchers often get money through research grants to do this kind of work. It also takes quite a bit of time to conduct before and after studies of this type. Again, money becomes an issue, as insurance companies don’t usually pay for this extra service.

Even if the average therapist can’t use tools of this kind, the results of the research done in labs are still helpful. Results can help therapists find out what areas need to be included in the rehab program. For example, should exercises focus on cadence (steps per minute), range of motion, or step length?