PowerCranks as a rehabilitation tool for the knee
One of the problems in rehabilitating the knee is in returning the injured extremity full function and balance compared to the "good" side. One of the problems with traditional equipment or techniques is either the muscles are isolated and not rehabilitated in a coordinated fashion or the legs are "tied" together such that the stronger leg can do all the work and the weaker leg never becomes equal. Residual imbalance makes the knee more prone to a reinjury.
There are two kinds of knee problems that PowerCranks can help with rehabilitation. Arthritis and the injured knee present two different issues.
In arthritis, pain usually prevents the full use of the knee because full use increases inflammation and pain. To compensate, the athlete is usually trying to reduce the stress/pressure on the knee while exercising to keep the pain under control. PowerCranks reduce knee stress/pressure in two different ways compared to typical exercise. Many people see riding a bicycle or exercise bike as the best way to get exercise while reducing stress on the knee. While cycling is non-impact compared to something like running, cycling isn't perfect. The more one "unwieghts" on the backside of the stroke the less one must push on the downstroke. In addition, the ability to shorten the crank length means those with restricted range of motion can ride a bicycle without needing to bend the knee as much as required by ordinary fixeed length cranks. Therefore, people with arthritis can frequently tolerate exercising on a PowerCranks bike when they are unable to do other types of exercise like walking or riding ordinary bicycles.
For the injured/surgical knee PowerCranks make sure the outcome of the rehab is balanced. It is not possible to develop bad compensatory habits during rehab because it is impossible for the strong leg to assist the weak leg in any fashion.
If one is an athlete, nothing will rehabilitate the injured athlete faster or better than integrating PowerCranks into the rehab. It is why PowerCranks are used by NFL teams, MLB teams, and major university rehab professionals to rehab their injured athletes.
Check out the video in which many users discuss what using the cranks were able to do for them or their clients following injury.
"PowerCranks [are] a great tool to teach ALL athletes of ANY sport the importance of leg independence. It facilitates pedaling efficiency of a cyclist as well as overall speed with any running athlete. We use the PowerCranks throughout the rehabilitation and training spectrum."
Founder and President of Performance Sports
“We have mainly used the PowerCranks bikes with our female middle / long distance runners who were either injured at the time or are injury prone and looking for a good way to supplement their training with cross training.”
Kevin Jermyn, Duke University Track & Field Coach
" I think they're great for recruiting hamstrings in my post-op ACL patients, and I like using them during bike fittings to illustrate proper spinning."
Jay Courant, PT, ATC,
Presidio Sports Medicine, San Francisco
"I began using Powercranks in 2001 as a rehab tool and after trying to resolve an Illiacus/Psoas strain that just would not heal and strengthen with regular rehab methods. I noticed significant improvements in pedaling mechanics, strength and power. I am convinced that Powercranks work and am glad I can recommend them to clients."
Coach Rob Swan
"PowerCranks™ have been an invaluable tool not only for my rehab patients but also my clients who are training with Fisher Sports for athletic performance enhancement. . . . PowerCranks™ provides the quality type of muscle contractions and sequencing to mimic running and walking. From hip flexors to hamstrings to proper ankle dorsiflexors, the PowerCranks™ are an excellent way to train those individuals who do not or cannot fully "weight-load" their bodies. In other words, the PowerCranks™ provide the instructor an excellent options how to train their clients - From endurance training to speed training. PowerCranks™ are one of the most innovative and effective tools to come into the health field in a long time!"
Brett Fisher, PT, ATC, CSCS,
Fisher Sports, Tempe AZ