Physiotherapy And The Aircast Cryocuff
Knee injuries and the management of post-operative knee conditions require physios to apply cold therapy to the joints to control knee effusions and pain. This is difficult to do with traditional methods but the Aircast Cryocuff is a flexible and efficient device to achieve effective cryotherapy and compression.
Knee injuries are very common in sports and vigorous activities and their acute physiotherapy management is very important for a good outcome and a speedy return to normal activities. Typical knee injuries and conditions managed by physiotherapists include meniscal tears (cartilage tears), medial collateral ligament damage, lateral collateral ligament damage, anterior cruciate ligament tears, patellar dislocation, total knee replacement and capsular injury.
The knee is the largest synovial joint in the body and when the joint is damaged it responds by becoming inflamed, increasing the metabolic rate of the tissues and secreting large amounts of synovial fluid into the joint. This can lead to a knee effusion, a large and tight swelling of the knee, at times called “water on the knee”. An effusion can be painful in itself and it inhibits normal muscle function, thereby interfering with muscle action and joint recovery.
Normal methods of applying compression and cooling have several difficulties:
* It is difficult or impossible to provide both at once
* Applying ice to the knee does not provide effective cooling in many cases
* Ice application carries the risk of ice burn by overcooling the skin
* Long periods of cooling are difficult to maintain
* Cooling is difficult to keep up over long periods
* Cooling cannot easily be done whilst mobilizing.
Cooling is always thought to be the main aim, but however as research has shown that management of the acute knee should start with compression instead, pain and inflammation reduction is an important part of the treatment so cold is important too.
The Aircast Cryocuff
The Aircast Cryocuff is a cryotherapy and compression device, designed to be easy to use and to be portable, used in managing post-injury and post-operative inflammation in knees and other joints. The Cryocuff has three parts:
* The Water Bucket. This water/ice reservoir is a plastic cylinder with a lid and guidance markings inside the bucket for the proportions of ice and water to fill for optimal use of the device. The lid is screwed on securely to avoid leakage and the contents can be remixed by simply turning the whole assembly upside down a few times.
* The Hose. The hose from the reservoir to the cuff is insulated and allows rapid clipping and unclipping to and from the cuff.
* The Cuff. This is the business end of the device. It is a wraparound cuff designed to fit the contours of the knee and comes in three sizes.
Application of the Cryocuff by a Physiotherapist
The size of the cuff needed for the patient is measured by the physio 6 inches above the kneecap and then the cuff is fitted snugly to the knee and firmly attached with the Velcro straps. It is important to start with the cuff deflated or the benefits of compression of the Cryocuff will not be forthcoming.
Now the bucket is filled with cubed ice and cold water in the right proportions and the top screwed on firmly to prevent leakage. The hose is clipped to the cuff by pushing the connector into the cuff clip and then the bucket and hose assembly is held up above the knee, allowing the cold water to flow into the cuff by gravity. How high the physiotherapist holds the bucket and for how long has some effect on the tightness of the filled cuff.
The cuff stays cold for an hour or so and the patient can disconnect it from the hose and get on with normal life as able. To change the water the hose is reconnected to the cuff and the bucket put below cuff level to refill the bucket from the cuff, and then the bucket is turned over a few times to remix the water and ice. The process is repeated from the beginning, allowing the compression and cooling to be maintained continuously as the bucket water mixture remains cold enough for 6-8 hours before replenishment.
Jonathan Blood Smyth is the Superintendent of Physiotherapists at an NHS hospital in the South-West of the UK. He writes articles about back pain, neck pain, and injury management. If you are looking for physiothrapists in Southampton visit his website.