Uni-knee arthroplasty was underaken smoothly according the standard procedure of unicompartmental arthroplasty.The soft tissue balancing was checked by trial prosthesis And appropriate sized implants were selected The implants were then fixed to the prepared bone bad by all cement technique.Midical release was performed to eliminate the medial abrasion phenomenon caused by the hypertrophied medical plica. All the tissue and cement debris was removed by thorough irrigation.