Most of us rely on our cars. Maybe we like to think we don't need them, but ask anyone who has had an injury or surgery that has prevented their ability to drive, and they'll be sure to let you know how important our cars can be. So when is the right time to return to driving? Is there a standard time? Should I ask my doctor?

It turns out, there is more to driving than your doctor can assess in his or her office. Driving safely requires the vehicle operator to have sufficient mental and physical abilities, both of which can be affected by injuries or surgery. While your doctor probably can tell you when it is not safe for you to drive, ultimately the decision on returning to drive should be determined by your local motor vehicles licensing department.

Did you take a test before returning to drive? Leave your comments below!

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A recent study presented at the 2009 American Association of Hip and Knee Surgeons questions the possible benefits of minimally invasive knee replacement surgery. Minimally invasive knee replacement, also referred to as MIS knee replacement, uses a shorter incision and specialize instruments to perform a knee replacement with less surgical dissection and trauma.

The results of this study looked at the purported benefits of increased strength and quicker recovery following MIS knee replacement. The study found by 6 weeks after surgery, there was no difference in recovery between standard knee replacements and MIS knee replacements. Furthermore, more of the MIS knee replacements were put in with poor alignment, leading to questions of longevity of these implants.

This recent study is different from previous studies that have found similar results. This study was performed prospectively, randomized, and double-blinded. Performing a study in this manner helps to reduce the chance that results could be attributable to other factors.

Related: Knee Replacement Surgery | Minimally Invasive TKA

_Sources:

Porucznik MA, "Minimally Invasive TKA Shows Little Benefit in Outcomes." AAOS Now. Vol 4, No 1. January 2010. Page 16.

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You might think that knee replacement surgery leads to changes in weight. Well, you're right. But probably not the result you might have expected.

A recent study from the University of Delaware found that more patients gained weight after knee replacement rather than lost weight. Many patients ultimately choose to proceed with knee replacement in an effort to lose weight. But this study found that patients were more likely to gain weight, when compared to a control group of patients.

The study authors also found that patients most likely to gain weight after knee replacement are those that were in worse physical condition going in to surgery. They recommend that people consider surgery before falling into worse physical shape, and then begin an organized exercise program following the surgery.

Related: Knee Replacement Surgery | Weight Changes With Knee Replacement

_{Sources: "Most Patients Gain Weight After Getting a New Knee" Published 1/29/2010.}

Standard ACL rehab takes 7 to 9 months to complete. For many athletes, not only does this mean the end of their athletic season, but it may interfere with their being ready for the next season. But can ACL reconstruction rehab be sped up? How long do you have to wait before returning to sports after ACL surgery?

Related: Standard ACL Rehab | All About ACL Tears