الفهرس 
Introduction
Normal Anatomy of the KneeOnly 14 pages are availabe for public view
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Abstract
High tibial osteotomy is effective for managing a variety of knee conditions including gonarthrosis with varus malalignment.
Prospective comparative study between locked T-plate and short toothed plate on medial wedge opening high tibial osteotomy , Our study is performed on 100 patients ,all have gonarthrosis with varus malalignment of the knee , In 50 patients in our study fixation is done by short toothed plate and in the other 50 patients T-locked plate is used. The final end results have been assessed according to the knee society score .Mean age is 45.7 and 43.9 years old for T-locked and short toothed plate respectively . Mean anatomical axis is 3.3 and 3.4 degree pre-operative for T-locked and short toothed plate respectively .
Significant improvement in knee society score is better with T-locked plate ,Overcorrection is more common with locked plate 10 %, Undercorrection is more common with short toothed plate 21% , HTO can be done for patient more than 55 years old with significant improvement in knee society score .complication rate is more with short toothed plate 20 % (intra-operative tibial plateau fracture 20 % , non-union 2% ) compared with 8 % with T-locked plate ,so it may need to be well skillfull to avoid fracture of the lateral cortex.