New fields being build may be natural grass or they may have a synthetic turf.  There are many factors that may go in to determining which type of field is built in a given area including cost, climate, use, and others.  However, increasingly, the chance of injury, is playing a more and more important role in determining which turf option will be placed.

There is not clear winner or safest option.  Newer synthetic turf options, such as FieldTurf, are much better than older synthetic options such as AstroTurf.  There have been a number of studies to try to determine if FieldTurf or natural turf is safer, but the jury is still out.  A recent NFL study found more injuries on FieldTurf, including an 88% higher risk of ACL tears, and 32% higher risk of ankle sprains.  Keep in mind, however, that this is comparing FieldTurf to NFL natural turfs.  Most fields don't have NFL team grounds crews maintaining natural grass, and they often have more use.  One reason FieldTurf may be advantageous, is that the maintenance and weather conditions have less of an impact on safety.

Research is ongoing, and newer turf surfaces are being developed that may be even safer than current options.  It seems, at present, that a perfectly maintained natural grass surface may be ideal for preventing injuries, but if field maintenance is an issue, a synthetic surface may provide safer playing conditions.

Source: "Artificial Turf Injuries Still More Likely in NFL"

We worry when the body doesn't make enough bone.  Conditions including osteoporosis can cause devastating complications as a result of weak bone.  Fractures that don't heal can lead to painful nonunions.  But we seldom talk about the body making too much bone.

There are conditions where the body makes too much bone.  These conditions cause heterotopic bone formation or heterotopic ossification.  Often abbreviated H.O., heterotopic ossification can cause pain and joint stiffness.  Heterotopic bone may be the result of an injury or surgery, or it may be part of a genetic condition.   The treatment of heterotopic ossification will depend on which of these conditions led to the excess bone formation.

Related: Heterotopic Ossification | Myositis Ossificans

Let's face it, working out in the gym can be boring.  Getting outside is what is the most fun about exercise.  Being outside can be invigorating, energizing, and in the dark winter months, can simply get you in a better mood.

However, in the cold winter months, this must be done with caution.  The elements can be dangerous, and outdoor exercise can cause problems for those not prepared.  Here are some tips for you before you head out into the cold!

Related: Eating for Cold Weather Exercise | Frostbite | Hypothermia

One of the most common causes of a snapping finger is called a trigger finger.  There are a number of options for treatment of a trigger finger, and determining which one is best for you depends on a number of different factors.

Learn about the treatments for a trigger finger, including medications, injections, and surgery, and what you should consider if you have a trigger finger.

Related: Trigger Finger | Treatments for Trigger Finger