Persona MC vs Attune Total Knee Replacement Study (PERTUNE)


University of Leeds




Knee Osteoarthritis


Device: Persona TKR
Device: Attune TKR

Study type


Funder types




Details and patient eligibility


This study aims to compare clinical and functional outcomes of a cohort of patients that have undergone a medial congruent TKR to a similar cohort of patients that have undergone a conventional TKR and a cohort of control participants. Our null hypothesis is that there will be no difference in the functional outcome (as assessed by gait analysis) between Attune and Persona MC TKR.

Full description

This cross sectional, post-operative comparator gait study aims to compare the functional and patient reported outcomes of patients that have undergone a MC TKR to an age, gender, BMI, pre-operative diagnosis with satisfactory clinical outcome at one year (OKS > 34) matched cohort of patients undergone a modern generation TKR which utilises a gradually reducing radius of curvature on the femoral component with conventional polyethylene (Attune) to a TKR with gradually reducing radius of curvature on the femoral component but a medial congruent (MC) TKR design (Persona).


31 patients




18+ years old


Accepts Healthy Volunteers

Inclusion criteria

Aged 18 years and above*

Have undergone primary total knee replacement for either:

  • Osteoarthritis
  • avascular necrosis of the femur or tibia
  • Report an Oxford Knee Score greater than 34, obtained from usual clinical practice. OKS above 34 represents (range 0-48, high representing good outcome) a good outcome post-surgery.
  • Independent of study participation, patients received either commercially available Zimmer Biomet Persona MC bearing or DePuy Synthes Attune knee implants implanted in accordance with product labelling
  • 1-5 years post TKR surgery
  • An adequate understanding of written and verbal information in English in order to provide informed consent and answer the study questionnaires* * Control participants will meet same inclusion criteria except no primary TKR and OKS will not be required

Exclusion criteria

  • History of infection in the replaced joint and/or other local/systemic infection that may affect the prosthetic joint
  • Skeletal immaturity
  • Neuropathic arthropathy
  • Osteoporosis/any loss of musculature or neuromuscular disease that compromises the affected limb
  • Severe instability secondary to the absence of collateral ligament integrity
  • Pregnancy - routine clinical practice ensures that all female patients are asked whether they are pregnant and can safely receive x-rays or surgery as per standard consent forms
  • Patient is a member of a protected population (e.g., prisoner, mentally incompetent, etc.)
  • Patient has previously received partial or total knee arthroplasty for the ipsilateral knee
  • Patients who are unable to give voluntary informed consent.
  • Patients who are unable to walk unaided (post-surgery).

BMI > 40

** Control participants will meet the same exclusion criteria as TKR patients

  • Patients who suffer with cognitive impairment such as Parkinson's or Alzheimer's disease resulting in impaired mental capacity.
  • Patients who are unable to walk unaided.
  • Patients who suffer from dizzy spells or fainting episodes.

Trial design

31 participants in 3 patient groups

Persona TKR
Patients will have undergone a medial congruent Persona total knee replacement
Device: Persona TKR
Attune TKR
Patients will have undergone a Attune total knee replacement
Device: Attune TKR
Control participants
Patients will not have recieved a primary TKR

Trial contacts and locations



Central trial contact

Graham Chapman, PhD; Hemant Pandit, MBBS, MS

Data sourced from

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