Department of Articular Reconstructive Orthopaedics @ Ospedale Galeazzi - Sant'Ambrogio

Since 2013, the ORACO unit has been operational under the direction of Dr. Michele Ulivi. Within this operating unit, primary hip and knee prosthetic surgery and prosthetic revision surgery is performed. The unit also carries out activities in the field of arthroscopic knee surgery. Computer-assisted hip and knee surgery and robotic surgery are also performed.

The operating unit is also strongly involved in research activities within the Galeazzi Orthopaedic Institute. In particular, Dr. Michele Ulivi has been appointed P.I. of the prosthetic register of the Galeazzi Institute.

Clinical research activities are carried out in the field of hip and knee prosthetic surgery, evaluating through the register the outcome of patients following new surgical procedures or new care protocols.

The development of the prosthetic registry is also carried on through updating with new PROMs questionnaires and with the development of techniques for the remote control of patients. The operating unit also carries out research in the field of 3D Model Based Radiostereometry for the study of micro-movements of knee and hip prosthetic implants.

Our excellence in numbers


hip and knee prosthetic surgeries per year

Notable advanced technological equipment

  • Hip and knee navigation system for computer assisted surgery
  • Robotic technology
  • 3D Model based Radiostereometry


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Meet our team

Head physician

Michele Ulivi

Orthopedic surgeon
Michele Ulivi

Featured physicians

Ospedale Galeazzi - Sant'Ambrogio

The new hospital brings together in a single facility Istituto Ortopedico Galeazzi, the first hospital for orthopaedic admissions that performs 75% of all revision orthopaedic surgeries in Italy, and Istituto Clinico Sant'Ambrogio, example of healthcare excellence for its cardiovascular unit as well as for the diagnosis and treatment of obesity.

The new Ospedale Galeazzi - Sant’Ambrogio (OGSA), accredited by the Italian National Healthcare System (SSN), and given an IRCCS status (Scientific Institute for Research, Hospitalization and Healthcare) by the Italian Ministry of Health for the study of the locomotor system disorders, it is a center of excellence for clinical and pre-clinical biomedical research, and it is well-known for its teaching activity as a learning site for the Bachelor of Medicine and Surgery in agreement with the University of Milan.

As former Istituto Ortopedico Galeazzi, it is known for its achievements in the field of sports medicine and is now home for RE.GA.IN, a regenerative medicine center for the treatment of cartilage and tendon pathologies.

Since 2007, the Institute has become a member of the ISOC (International Society of Orthopaedic Centers), recognized as one of the 19 institutes of excellence in the field of orthopaedics representing 16 countries.

Former Istituto Clinico Sant'Ambrogio adds to the new OGSA its healthcare excellence in treatment of cardiovascular pathologies with over 500 interventions of cardiac surgery and 2,500 interventional cardiology procedures per year thus becoming among the first Italian centers for cardiovascular treatments. The Cardiothoracic Center represents a point of excellence in mini-invasive cardiac surgery and in the percutaneous aortic valve replacement. Additionally, former Istituto Clinico Sant'Ambrogio is in the first place among the Lombardy hospitals for the treatment of acute myocardial infarction.