All Ligaments Left In Knee Arthroplasty Trial (ALLIKAT)
Primary Osteoarthritis of Knee Nos
About this trial
This is an interventional treatment trial for Primary Osteoarthritis of Knee Nos focused on measuring Arthroplasty, Knee, Bicruciate retaining, Vanguard XP, Vanguard CR, Surgery, Zimmer Biomet, Joint Replacement, Osteoarthritis
Eligibility Criteria
Inclusion Criteria:
- Primary Osteoarthritis of the knee involving one or more compartments of the joint.
- Intact Anterior and Posterior Cruciate Ligaments.
- Intact collateral ligaments.
- Correctable coronal deformity.
- No more than 15 degrees of fixed flexion deformity.
Exclusion Criteria:
- Age under 18 years.
- Revision knee replacement surgery.
- Rheumatoid Arthritis.
- Traumatic aetiology.
- History or clinical signs of ACL rupture.
- Previous arthroscopy related to ACL injury or reconstruction.
- Correction of a flexion contracture that may require extensive resection of distal femur.
- Altered pain perception and / or neurologic affection (for example as a complication arising from diabetes).
- Unable to consent for themselves.
- Patients with language or cognitive issues that may prevent them completing the follow up requirements.
Contraindications for the device:
- Cementless application of components.
- BMI ≥40 kg/m2.
- Use of Anterior Stabilized Bearings.
- Patients with severe pre-operative varus or valgus deformity ≥ 15 degrees.
- Correction or revision of previous joint replacement procedure on index knee.
- Infection.
- Sepsis.Osteomyelitis.
- Osteoporosis (requiring treatment).
Relative contraindications include:
- Unco-operative patient or patient with neurologic disorders who is incapable of following directions.
- Osteoporosis.
- Metabolic disorders which may impair bone formation.
- Osteomalacia.
- Distant foci of infections which may spread to the implant site.
- Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram.
- Vascular insufficiency, muscular atrophy, neuromuscular disease.
- Incomplete or deficient soft tissue surrounding the knee, including the anterior cruciate ligament.
Sites / Locations
- Oxford University Hospitals NHS Foundation TrustRecruiting
- The Royal Orthopaedic Hospital NHS Foundation TrustRecruiting
- North Bristol NHS TrustRecruiting
- Frimley Health NHS Foundation TrustRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Vanguard XP Knee Replacement Surgery
Vanguard CR Knee Replacement Surgery
Participants randomised in this group will receive the Vanguard XP Bi-cruciate Retaining Knee Replacement System. This total knee replacement device (Vanguard XP) and surgical procedure retain the anterior cruciate ligament in the knee.
Participants randomised to this group will receive the Vanguard CR Single Cruciate Retaining Knee Replacement Surgery. This total knee replacement device (Vanguard CR) and surgical procedure sacrifice the anterior cruciate ligament and replaces it with artificial support. This is currently the standard practice for knee replacement surgery in the NHS.