Dr. Attaallh Alrefaee is an Consultant Orthopedic Surgeon. He graduated from Damascus University, receiving his MSC / Syrian Board in Orthopedic Surgery. Post-graduation, he completed his two-year Fellowship in arthroplasty and joint Replacement at Tarabichi Institute for joint Arthroplasty. During this period, he was a prominent and active speaker for the annual, international orthopedic congress and conference. Two years post graduate expert Diploma in Muscle skeletal ultrasound Ucam university Espain. Two years post graduate expert Diploma in Pain Management CCIIPM. He is a Member of EFFORT, ISAKOS, ESSKA, and the Head of the scientific committee at ICJR Conference in addition to his active role and participation as an instructor in cadaver courses at Sharjah University in UAE. He was involved in lots of research work and publications in addition to published abstracts on a new level of constraint in primary TKA (ICJR 2015) titled “Use of tourniquet in primary total knee arthroplasty (AAOS)”, “New complexity scale for primary TKA to improve pre-operative patient care, Geneva.”