Specialties
Knee surgery
From arthroscopy under local anaesthesia for a meniscus tear to robotic total knee replacement for osteoarthritis: modern treatment for every knee condition.
- Robotic joint replacement
- Arthroscopy as a day case
- Sports injuries

Your knee in experienced hands
The knee is the largest joint in the body and one of the most heavily loaded, both in sport and with age. Marios Salmas treats the full range of knee conditions: meniscus and ligament tears, injuries and fractures, kneecap (patella) disorders and osteoarthritis.
His team has performed more than 2,000 knee and hip replacements since 1998 and today performs active robotic joint replacement with the TSolution One® system.
Conditions
Treatments and procedures
Patient cases
Patients: knee
Total knee replacement – 3rd day after surgery
Robotic knee replacement in a 40-year-old patient – 1 day after surgery
Knee arthroscopy for a meniscus tear under local anaesthesia
Knee osteoarthritis – robotic total knee replacement
Arthroscopic meniscectomy under local anaesthesia as a day case
Simultaneous bilateral total knee replacement in an overweight patient
Simultaneous bilateral total knee replacement – full function with only 2 physiotherapy sessions
Knee osteoarthritis – robotic total knee replacement, 2 years after surgery
Meniscus tear – arthroscopic partial meniscectomy under local anaesthesia as a day case
Robotic knee replacement in a 40-year-old patient – 1 day after surgery
Knee osteoarthritis and meniscus tear – arthroscopy under local anaesthesia as a day case
Meniscus tear – knee arthroscopy under local anaesthesia as a day case
Recurrent kneecap dislocation – surgical treatment, 20 years on
Knee osteoarthritis – robotic total knee replacement without physiotherapy
Hybrid total knee replacement
Meniscus tear and cartilage damage – knee arthroscopy under local anaesthesia
Knee and hip osteoarthritis – robotic replacement of both knees and a hip within 15 days
Meniscus tear – arthroscopic partial meniscectomy under local anaesthesia
Robotic bilateral knee replacement – 3 months after surgery
Simultaneous total hip and knee replacement in the same operation – 20 days after surgery
Robotic total knee replacement in both knees at once – 20 days after surgery
Robotic total knee replacement in both knees in one operation – 3 days after surgery
Robotic total knee replacement in both knees at once – 3 days after surgery
Robotic total knee replacement in both knees in one operation
Simultaneous total knee replacement in both knees in 3 patients
Robotic replacement of both knees at once – no tendon cutting – 50 days after surgery
Robotic total knee replacement in both knees at once without cutting tendons
Robotic total knee replacement in both knees
Robotic total knee replacement in both knees at once
ACL tear and medial meniscus tear – 12 years after ACL reconstruction
ACL tear with lateral and medial meniscus tears – knee arthroscopy – ACL reconstruction
ACL tear and medial meniscus tear – knee arthroscopy – ACL reconstruction and partial meniscectomy, 10 years after surgery
Meniscus tear – ACL tear – ACL reconstruction – arthroscopic meniscal repair
ACL and PCL tears with a meniscus tear – ACL and PCL reconstruction
Loosening of a total knee replacement – revision total knee replacement
Total knee replacement that needed no physiotherapy at all after surgery
Medial compartment knee osteoarthritis – unicompartmental knee replacement
Knee osteoarthritis – total knee replacement – 2 days after surgery
Knee osteoarthritis – total knee replacement – 1 day after surgery
Revision total knee replacement – post-traumatic knee arthritis with a tibial fracture and non-union
Robotic total knee replacement in both knees at once – 1 day after surgery
Robotic total knee replacement in both knees at once – 20 days after surgery
Robotic total knee replacement in both knees at once in 3 patients
Robotic total knee replacement in both knees at once – 3 months after surgery
Robotic total knee replacement in both knees at once
Robotic total knee replacement in both knees in one operation – 20 days after surgery
Robotic total knee replacement in both knees at once – range of motion immediately after surgery
Meniscus tear – 2 years after arthroscopic partial meniscectomy
Knee osteoarthritis with associated degenerative meniscus tears – arthroscopic knee debridement
Meniscus tear – knee arthroscopy – arthroscopic partial meniscectomy, 10 years on
Total knee replacement
Robotic knee replacement – on the day of surgery
Robotic knee replacement – 2 days after surgery
Robotic knee replacement with the CORI system
Robotic knee replacement in a 91-year-old patient – no physiotherapy, 23 days after surgery
Robotic knee replacement – 40 days on
Robotic knee replacement – 1st day after surgery
Robotic knee replacement – 2 days after surgery
Robotic knee replacement – 22 days after surgery
4 patients with robotic knee replacement – 1st day after surgery
Robotic knee replacement – day 2
Robotic knee replacement – 20 days on
Robotic knee replacement – day 29 after surgery
Robotic knee replacement – 22 days after surgery
Robotic knee replacement
Robotic right knee replacement
Robotic total knee replacement
Robotic knee replacement – 19 days on
Robotic knee replacement
Robotic knee replacement – day 2
Robotic total knee replacement
Robotic total knee replacement – 5 months after surgery
Robotic total knee replacement
Robotic knee replacement
Robotic knee replacement
Robotic knee replacement
Robotic knee replacement – 20 days after surgery
Robotic knee replacement – 40 days after surgery
Robotic knee replacement – 2 days after surgery
Robotic knee replacement – 2 days after surgery
Robotic total knee replacement – 2 days after surgery
Robotic total knee replacement – 20 days after surgery
Robotic total knee replacement – 3 months after surgery
Robotic knee replacement without cutting the tendons
Robotic total knee replacement
Robotic total knee replacement in an overweight man – 15 days after surgery
Robotic knee replacement – 2 months after surgery
Robotic atraumatic knee replacement
Knee osteoarthritis – robotic total knee replacement
Robotic total knee replacement – 6 months after surgery
Robotic knee replacement without cutting tendons
Knee osteoarthritis – total knee replacement
Knee osteoarthritis – treatment with robotic total knee replacement
Total knee replacement – 1 day after surgery
Knee osteoarthritis – total knee replacement in 3 patients
Robotic total knee replacement
Hybrid total knee replacement
Robotic computer-navigated knee replacement – 2 days after surgery
Knee osteoarthritis – robotic total knee replacement
Knee osteoarthritis – robotic total knee replacement
Total knee replacement
Knee osteoarthritis – total knee replacement – 2nd day after surgery
Knee osteoarthritis – personalised total knee replacement – 15 days after surgery
Personalised total knee replacement – 4 years after surgery
Knee osteoarthritis – total knee replacement – 4 days after surgery
Minimally invasive total knee replacement – 15 days after surgery
Total knee replacement – 2 days and 15 days after surgery
Total knee replacement – 9 years after surgery
Minimally invasive total knee replacement – 2 months after surgery
Total knee replacement – 2 years after surgery
Total knee replacement – 2 days after surgery
Personalised minimally invasive total knee replacement
Personalised minimally invasive total knee replacement – 6 weeks after surgery
Personalised minimally invasive bilateral total knee replacement
Knee osteoarthritis – minimally invasive anatomical knee replacement – 15 days after surgery
Knee osteoarthritis – personalised minimally invasive knee replacement – 2 days after surgery
Total knee replacement – 3 days after surgery
Total knee replacement – 3 days after surgery
Knee osteoarthritis – total knee replacement
Knee osteoarthritis – total knee replacement, 18 days after surgery
Knee osteoarthritis – total knee replacement without cutting the quadriceps tendon, with retraction of the vastus medialis
Robotic replacement of both knees at once – 2 days after surgery
Simultaneous robotic knee replacement in a patient from Germany
Robotic total knee replacement in both knees at once
Robotic total knee replacement in both knees at once
Robotic replacement of both knees in one operation in 2 patients – 3 days after surgery
Robotic replacement of both knees at once – 2 days after surgery
Robotic replacement of both knees – day 3
Robotic replacement of both knees in one operation – 23 days after surgery
2 patients with simultaneous robotic replacement of both knees – 2 days after surgery
Patient with two robotic knee replacements
Robotic replacement of both knees in one operation in an 80-year-old patient – 20 days after surgery
Robotic replacement of both knees in one operation – 2 days after surgery
Robotic replacement of both knees in one operation – 2nd day after surgery
Robotic replacement of both knees in one operation – 3 weeks after surgery
Robotic replacement of both knees in one operation – 3 days after surgery
Robotic replacement of both knees in one operation – 3 days after surgery
Robotic replacement of both knees in one operation – 3 days after surgery
Robotic replacement of both knees in one operation – 19 days after surgery
Robotic replacement of both knees in one operation – 19 days on
Robotic replacement of both knees in one operation – 20 days after surgery
Robotic replacement of both knees in one operation – 21 days after surgery
Robotic replacement of both knees in one operation – 21 days after surgery
Robotic replacement of both knees in one operation – 21 days on
Robotic replacement of one knee and revision replacement of the other in one operation
Double revision replacement of both knees in one operation – 3 weeks after surgery
Simultaneous robotic knee replacement
Simultaneous robotic knee replacement – one year after surgery
Robotic bilateral knee replacement
Robotic replacement of both knees at once – 2nd day after surgery
6 months after robotic total knee replacement in both knees at once
Atraumatic robotic replacement of both knees at once
Robotic replacement of both knees at once – 3 months after surgery
Robotic replacement of both knees in the same operation – 20 days on
Robotic replacement of both knees on the same day
Robotic replacement of both knees at once
Robotic total knee replacement in both knees in one operation
Atraumatic robotic total knee replacement in both knees at once – 20 days after surgery
Robotic replacement of both knees at once – 20 days after surgery
Robotic bilateral knee replacement
Replacement of both knees in the same operation – 3 days after surgery
Simultaneous replacement of both knees
Robotic replacement of both knees at once – 3 months after surgery
Kneecap dislocation – surgical repair
Unicompartmental knee replacement
Simultaneous hip and knee replacement
Osteonecrosis of the femoral condyle, right knee – 5 months after surgery
Meniscus tear – arthroscopic partial meniscectomy under local anaesthesia
Knee ACL tear with associated medial meniscus tear – 3 months after surgery
ACL tear – knee arthroscopy – ACL reconstruction – 12 years after surgery
ACL tear – knee arthroscopy – ACL reconstruction – 12 years after surgery
ACL tear – ACL reconstruction – 20 days after surgery
ACL tear – ACL reconstruction
Knee replacement
Simultaneous double knee replacement (part 1)
Simultaneous double knee replacement (part 2)
Kneecap chondropathy – knee arthroscopy
Patient testimonials
What our patients say
“I feel the need to thank, from the bottom of my heart and publicly, orthopaedic surgeon Professor Marios Salmas for the perfect operation on my knee – a robotic total knee replacement that freed me from the unbearable pain that tormented me. I am in my eighth decade of life, and my recovery was immediate, painless and without needing a walking stick or a walking frame. On the very day of the operation I walked on my own without any help, and on the third day I climbed stairs. Now, one week after the operation, I move as I did at 40, without the terrible pain that tormented every movement, and without needing physiotherapy.”
“My mother had surgery on Monday 27/4/2026 at Eugenideio Hospital with Prof. Salmas (total joint replacement). An exceptional person, an exceptional doctor. My mother, who is 79, walked on the same day as the operation. Zero pain after the surgery. Today she was discharged and her leg is working perfectly.”
“A big thank you to this wonderful person and excellent doctor! He operated on my 91-year-old father. Four hours after the operation he was walking in the corridors, and the next day he climbed 12 steps on his own. An experienced doctor who deserves many congratulations.”
Appointment
Book an appointment for an assessment
The doctor will examine your case and explain your treatment options in detail.