A Case Report of Lateralisation of the Patella

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A case of lateralisation of the patella, 21 year old female, was reported. The patient complained of pain and weakness in her left knee after sprain. On examination the patella slipped laterally from slight flexion to acute flexion but it returned to the normal position at the maximum flexion angle of the knee joint. Her right knee was revealed to have the same abnormality slight degree without symptoms.The medial retinaculum was surgically sutured to the separated M. vastus medialis and the lateral retinaculum was insiced along the lateral border of the patella. Results of operation was satisfactory and the lateralisation was thought to be congenital in nature and to be exaggerated by sprain.
西日本整形・災害外科学会の論文