Robotic Assisted Knee Arthroplasty - Retain the Anterior Cruciate Ligament or Not
The goal of this clinical trial is to compare the function of the knee after retaining or sacrificing the anterior cruciate ligament in robotic assisted knee arthroplasty.

The main questions it aims to answer are:

Does retaining the anterior cruciate ligament improve postoperative gait? Participants will perform

Gait analysis
Stair performance test
CT based Micromotion analysis of the implant micromovement
- EligibilityCriteria: Inclusion Criteria:  Severe osteoarthritis Ahlbäck grade 3 or 4 affecting 2-3 compartments Ability to preoperatively walk 30 m independently without support before surgery Ability to give written consent. CPAK (Coronal Plane alignment of the Knee) I, II or III  Exclusion Criteria:  Previous cruciate ligament surgery in affected knee Previous osteotomy in affected knee, Posttraumatic arthritis in affected knee History of infectious arthritis Rheumatoid arthritis Significant preoperative varus or valgus deformity >15º Evidence of damaged Anterior Cruciate Ligament and/or Posterior Cruciate Ligament Flexion contracture > 10 º, - Planning reveals the need for a complex implant ( stem, augment or higher level of constraint). - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - MaximumAge: 99 Years - StdAgeList: Adult, Older Adult