Anterior cruciate ligament (ACL) injuries are one of the most common among young female athletes occurring at a conservative estimate of 38,000 incidences per year. (1) With the cost of a surgical repair ranging between $17,000-$25,000 (2), the economic impact is significant, not to mention the long term sequela to the athlete which includes a significantly greater risk of osteoarthritis in the future. (3) Approximately 80% of these injuries are non-contact, suggesting many of them can be prevented. (4)

The ACL is a ligament running from the posterior femur anteriorly to the tibia. It originates from deep within the notch of the distal femur and its proximal fibers fan out along the medial wall of the lateral femoral condyle. The ACL attaches in front of the intercondyloid eminence of the tibia and is blended with the anterior horn of the medial meniscus. It provides approximately 85% of the restraining forces preventing anterior tibial translation. It also limits excessive internal or external rotation of the tibia. (5)

Knee Normal ACL 768w, 1024w, 360w" sizes="(max-width: 300px) 100vw, 300px" height="297" width="300" />

In the new era of wellness and wearable technology, 2016 offers fitness professionals advanced tools to coach and motivate their clients like never before. With new health applications promising to help inspire users towards better nutrition, taking extra steps, and burning more calories, the big question in the fitness industry still remains:

Can wellness and fitness technology help coaches and trainers scale their business and increase client accountability for the long term?

The answer to this question lies not just in the devices and apps, but in the way that savvy fit pros will create coaching environments where the data becomes the disciplinarian.

On Your Mark, Get Set

The current global market for wellness and fitness wearables is growing faster than expected.

A recent study published by Forrester research shows one out of every five Americans now uses a wearable device.

President Barack Obama has even adopted the connected fitness lifestyle by proudly donning the Fitbit SURGE fitness watch in press photos while walking in the White House garden.

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Paul Hiller