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A Retrospective Cohort Study Comparing Postoperative Lower Limb Alignment Differences between Mako-UKA and Naton-UKA Based on the Coronal Plane Alignment of the Knee (CPAK) Classification

A Retrospective Cohort Study Comparing Postoperative Lower Limb Alignment Differences between Mako-UKA and Naton-UKA Based on the Coronal Plane Alignment of the Knee (CPAK) Classification

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600121722
Enrollment
Unknown
Registered
2026-04-02
Start date
2026-04-08
Completion date
Unknown
Last updated
2026-04-14

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

Conditions

Osteoarthritis of the Knee Joint

Interventions

Naton Robotic-assisted UKA group:None
Mako Robotic-assisted UKA group:None

Sponsors

The Fourth Medical Center of People’s Liberation Army General Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients who underwent robotic-assisted unicompartmental knee arthroplasty in our department from August 2022 to May 2025. 2. Patients possessed independent decision-making capacity, were willing to comply with the study protocol and complete all required follow-ups, and had signed the informed consent form.

Exclusion criteria

Exclusion criteria: 1. Lateral compartment unicompartmental knee arthroplasty. 2. Absence of preoperative and postoperative full-length lower limb radiographs. 3. Patients whose surgery was not performed using either the MAKO or Naton robotic systems.

Design outcomes

Primary

MeasureTime frame
Lateral distal femoral angle;Medial proximal tibial angle;Mechanical HKA;Oxford Knee Score;Forgotten Joint Score 12;

Secondary

MeasureTime frame
Operative Time;Blood Loss;Hemoglobin;C-Reactive Protein;

Countries

China

Contacts

Public ContactShaokui Nan

The Fourth Medical Center of People’s Liberation Army General Hospital

nanshaokuingh@163.com+86 186 0031 7801

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Apr 17, 2026