Saturday, 19 November 2011

Knee pain



Sports were designed to improve fitness of ordinary mortals. In our quest for higher level of fitness we sometimes damage joints beyond repair. Some amount of cyclical loading is good for cartilage (the softer shock absorbing ends of bones) nutrition. A Swedish prospective study comparing degenerative wear with exercise compared daily exercise, with thrice daily exercise and no exercise and concluded that thrice daily exercise probably had the least wear.

Eg. Cartlilage culture

Once a mechanical change to the alignment or stability of knee occurs, it becomes the beginning of the end of knee. Ligament injuries which contribute to stability are akin to suspension and wheel alignment of our cars. Your continuous driving without correction wears out the tyres similar to the softer cartilage of the knee.

Degemeric MRI
Pain is a protective phenomenon evolved to prevent further damage to oneself and administering of pain killers alone without investigation and treatment of the cause could further deteriorate the joint.. As far diagnosis of cartilage injuries, MRI scans upto 3 Tesla magnets with de-gemmeric software to look at cartilage has improved the diagnosis of cartilage injuries. These days easy reproducible minimal access surgery is available world wide to correct alignment, ligament reconstruction and resurfacing of cartilage injuries using osteoarticular grafts, bioscapholds and matrix assisted autologous implantation.

The use or abuse of exercise is ever increasing in our quest for healthier hearts. Over doing the same has exacerbated the possible incidence of osteoarthritis in knees. Weight reduction is the first simple step to reduce the wear across the cartilage. Six times one’s the body weight goes through our knees while walking. It is akin to driving a truck with cycle tyres. The smaller bony part of the knee has to take the excessive load which is already getting stiffer due to chemical changes and decrease water content with aging. Stronger and fitter muscles do take part of the load.

The role of neutrocaeuticals for arthritis has been controversial. Glucosamine and chondroitin sulphate are normal constituents of articular cartilage, but only 8% gets absorbed and how much reaches the knee is unclear. There are no studies to prove that the cartilage becomes normal with ingestion of neutricaeuticals. It at best could reduce the rate of degradation and might have analgesic effects. There use has been widespread so as to avoid the deleterious side effects of long term use of analgesics which are proven to cause Gastrointestinal and renal problems.

Viscosupplementation have been used to delay the inevitable and recently been talked about as a disease modifying intervention. This is yet to be proved and at best would be a stop gap arrangement till the inevitable knee replacement occurs.
Knee replacement has been shows to be in medium to long term, the best option once end stage arthritis occurs. Newer designs, materials like oxinium and crosslinking of polyethylene have proven to reduce the wear rates and improve the longevity of the implant. The complications of Pulmonary embolism, infection has been decreased with better drugs and early mobilization. As younger arthritic patients are demanding better function newer partial knees are being tested.


Correction of alignement(HTO) in an young patient with arthritis



preop with knee deformity


post knee repalcement op of the same patient

Pre Knee replacement

post knee replacement

3 comments:

  1. Great picture of successfully done surgeries. There are well qualified professionals of joint replacement surgeon India which can help in many latest surgeries.

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  2. This is a shocking post but shares good information about knee replacement. Great job. alternatives to knee replacement surgery

    ReplyDelete
    Replies
    1. The alternatives discussed might have a role in future. At present as far as i know there are no levels one studies to prove that stem cells injection in arthritis can normalise an arthritic knee. Case studies alone are not enough to push it on unsuspecting public.

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