Alexander P. Sah

Total (full) knee replacement refers to the resurfacing of all three compartments of the knee; the inside, the outside, and the kneecap portions of the joint. However, rather than "replacing" the entire knee, knee replacement refers to resurfacing the articulating surfaces of the knee joint.

Preop xray
Preop xray
Knee rip
Knee rip
Knee rip
Knee rip

A metal cap goes on the end of the thigh bone, recreating the anatomy of the end of the femur. A plastic liner makes up the other side of the articulating surface, and is fixed to a metal tray which is secured to the top of the shin bone.  In this way, the knee joint is now metal, on plastic, on metal.  This replaces the bone on bone articulation which causes pain in knee arthritis. 

More generalized knee pain and diffuse arthritis patterns are best treated with total knee replacement. This in in contrast to isolated knee arthritis to one compartment which may be appropriate for partial knee replacement.  With total knee replacement, greater knee deformities and limb malalignments can be corrected with this procedure. Long-term studies have shown knee replacement to be one of the most reliable and durable orthopedic procedures available.

Less invasive total knee replacement surgery

92 y/o patient who went home day after surgery, and walking at two week visit after surgery.

Knee Committees and Presentations

  • Co-Director, Institute for Joint Restoration and Research, Washington Hosp, 2012 – present
  • Director, Outpatient Joint Replacement Program, Washington Hosp, 2014 – present
  • Chair, Department of Orthopedics, Washington Hospital, 2012 - 2015
  • American Academy of Orthopaedic Surgeons, Knee Program Committee, 2012 – 2016
  • Progam Co-Director, VuMedi, Hip & Knee Program, SF Event, 2015
  • VuMedi Webinar, Reducing Recovery Time in Total Joint Arthroplasty, Moderator, 2015
  • Voting Panel Member, ACR-AAHKS Perioperative Management Guideline Group, 2015-16
  • Voting Panel Member, AAOS-AAHKS Clinical Practice Guidelines on Surgical Management of Osteoarthritis of the Knee, 2016
  • Faculty, Persona Total Knee Surgical Training Course, Phoenix, 2018
  • Moderator, Persona Total Knee Bioskills Training Event, SF, 2017
  • Faculty, Persona Total and Partial Knee Surgeon Education, Walnut Creek, 2017
  • Alexander Sah, “Knee flexion at time of hospital discharge best indicates ultimate range of motion after total knee arthroplasty”, Poster at AAOS Annual Meeting, New Orleans, 2018
  • Alexander Sah, “Knee Kinematics and Function”, Moderator at ICJR 3rd Annual Pan Pacific Orthopedic Congress, Kona, Hawaii, 2016
  • Alexander Sah, “Initial Experience with Next Day Discharge after Total Knee Arthroplasty", Presentation at ICJR 3rd Annual Pan Pacific Orthopedic Congress, Kona, Hawaii, 2016
  • Alexander Sah, “My top 5 Moves in Primary Total Knee Arthroplasty”, Presentation at ICJR 3rd Annual Pan Pacific Orthopedic Congress, Kona, Hawaii, 2016
  • Contemporary Solutions for Joint Surgery, Salt Lake City, Utah, 2017
  • California Orthopedic Association Annual Meeting, Laguna Niguel, 2016
  • Contemporary Solutions in Joint Surgery, Newport Beach, 2016
  • 3rd Annual ICJR Pan Pacific Orthopedic Congress, Hawaii, 2016
  • Center of Leadership, 2016-present
  • West Regional Hip and Knee Reconstruction Meeting, SF, 2016