Demographic data of the patient was recorded. All routine investigations were carried out and the results were noted. Preoperative haemoglobin, range of motion, WOMAC8 scores and KSS9 scores were noted. Standard knee radiographs i.e. weight bearing anteroposterior and lateral views in 30 degree flexion were taken. Patients were randomly allocated to platelet gel group and control group using opaque envelope method which was opened on the day of surgery.