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RCT Comparing Robotically-Assisted vs. Manually-Executed Total Knee Arthroplasties

A Prospective Randomized Clinical Trial (RCT) Comparing Functional and Radiographic Outcomes of Robotically-Assisted vs. Manually-Executed Total Knee Arthroplasties

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03482349
Enrollment
152
Registered
2018-03-29
Start date
2018-03-16
Completion date
2025-03-13
Last updated
2025-03-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteoarthritis

Brief summary

This study will explore if there are any difference in functional outcomes between two different surgical procedures for total knee replacement: robot-assisted versus manually-executed total knee arthroplasty.

Detailed description

Although total knee arthroplasty (TKA) is an effective treatment for end-stage knee arthritis, improvements in surgical technique remain a necessity. Contemporary designs have bolstered durability, but longer life expectancies have placed an even greater emphasis on survivorship. Additionally, patient satisfaction remains an issue. A prospective randomized clinical trial (RCT) is proposed to compare robotically-assisted versus manually executed primary (TKAs). This study is designed to address the major short-term clinically important issues between the two types of procedures with special emphasis on functional outcome. Patients will be randomized to receive either a robotically-assisted or a manually-executed primary TKA.

Interventions

PROCEDURETotal Knee Robotically-Assisted

The surgeon digitizes the shape of the joint and the computer transfers the planned surgical strategy to a dedicated surgical robot. Resections are performed by the surgeon on a constrained guide held by the robot.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to 100 Years
Healthy volunteers
Yes

Inclusion criteria

* Include all patients who are surgical candidates for primary TKA with unilateral osteoarthritis * All eligible male or female patients between the ages of 20 years to 100 years old * All included study participants must be able to give an informed consent.

Exclusion criteria

* Significant femoral or tibial deformity due to congenital or traumatic etiologies, inflammatory arthritis, post-septic arthritis, osteomyelitis, prior infection of knee joint, osteoporosis, dislocated or fragmented patella * The presence of infections, highly communicable diseases (e.g. AIDS), active tuberculosis, venereal disease, hepatitis. * Significant neurological or musculoskeletal disorders or disease that may adversely affect normal gait or weight bearing. * Presence of previous prosthetic knee replacement devices (of any type) * Metastatic disease * Psychiatric illness * Drug or alcohol abuse * Body mass index (BMI) \> 40 kg/m2

Design outcomes

Primary

MeasureTime frameDescription
Radiographic Parameters1 yearKnee radiographs including an anteroposterior (AP) view and true lateral view, plus a patellar view

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026