Hospital
1. Chettinad super specialty hospital
Kelambakkam, Rajiv Gandhi road, Kanchipuram district
Near Chennai
T.+91 44 47411000
Clinic
27, 1st avenue
Besant nagar
Chennai 600090, India
Mobile: 91 9176640002
Uni or Partial Knee replacement guide
| Partial syn uni-condylar syn uni-compartment knee replacement is the treatment for partial knee osteoarthritis. In a proportion of osteoarthritis patients the entire knee is not affected to start with and only one out of three compartments in the knee is affected. To understand what a uni-condylar pr partial knee replacement means, you will need to understand the anatomy of the knee. The knee joint actually consists of three compartments, the inner half, the outer half and the knee cap at the front. In many middle aged patients the arthritic process starts in the inner half. It therefore makes sense to replace worn out cartilage in this portion alone. Rarely the outer half alone or lateral compartment is alone affected. Each compartment or a combination of two compartments can be replaced. For e.g.: one could replace the inner half, outer half or do a patello femoral replacement for knee cap arthritis. Sometimes one could replace the inner and patello-femoral compartments with a bi compartmental knee. The surgeon verifies that the other two compartments are normal or just affected by minor damage only before performing a partial knee replacement. Commonly a medial uni-condylar knee replacement is done. In this operation the inner half alone is replaced with prosthesis. To be eligible for a partial knee, the patient should fulfill three criteria, a) The inner half alone should be affected b) The ACL should be intact c) The deformity should be mild not exceeding 15 degrees of varus. Two groups of patients may require a Uni-compartment | partial knee replacement 1) A patient in their fifties with partial arthritis in whom a total knee replacement may be required after ten to fifteen years 2) A patient in the eighties for whom this is the only operation that will be required. The advantages of partial knee replacement are 1) Less morbidity. The operation can be done through small incisions as long as only three inches 2) Less blood loss occurs as healthy bone and cartilage is not damaged during the surgery. 3) The range of movement is almost like a normal knee. Fig shows small sized incisions for a partial 4) Quicker recovery as there is less poet operative pain due to the small incision 5) Knee feels more normal as the ligaments are preserved. |
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