Recurring Meeting of Cleveland Clinic Core Team

Date: April 14, 2015

Time: 10:30 AM EST

Means: In person meeting

Attendees:

1. Ahmet Erdemir
2. Craig Bennetts
3. Snehal Chokhandre
4. Robb Colbrunn
5. Tara Bonner

Agenda:

1. Discuss immediate action items from the last meeting.
2. Discuss Mach-1 tissue testing system issues.
3. Decide immediate action items for the next meeting.
4. Other.

Immediate Action Items:

• Ahmet
  • Start listing ongoing items in meeting minutes.
• Snehal
  • Send Tara the dates of MRI timeline to allow robotics testing room scheduling.
  • Start wiki page on the use case for kinematics driven mechanics of cruciate ligaments.
  • Start working on a modeling problem to evaluate thickness measurements.
  • Draft a document for Biomomentum Inc. about testing machine limitations and desired features.

Ongoing Action Items:

• Ahmet
  • Dissemination of anatomical images.
• Craig
  • Anatomical imaging manuscript.
  • Scripting for large-scale analysis of simulation parameters for convergence.
• Snehal
  • Pivot shift manuscript.

  • Cruciate ligament modeling & simulation.

• Robb
  • Patellofemoral joint experimentation manuscript.
• Tara
  • Tibiofemoral joint experimentation manuscript.

Notes:

1. Discuss immediate action items from the last meeting.
   • There are many ongoing activities ongoing that do not necessarily fit into the immediate action items category. These items will be listed in the Ongoing Action Items category to ensure consistent (yet not time sensitive) effort on these.
   • Snehal contacted the imaging facility to schedule sessions for upcoming specimens. June 2, 2015 (Tue) experimentation was scheduled for June 3, 2015. The remaining dates for experimentation were not changed.
   • Work on the pivot shift manuscript is not urgent. Nonetheless, work on this activity should be conducted on a routine basis. This activity is assigned as an ongoing action item for Snehal.
   • Snehal and Craig conducted additional tests to compare probe-based thickness measurements to camera-based ones. Foam, cartilage, and tendon were measured. For optical measurements, the recordings were collected both on the back and front faces. As expected, the probe-based thickness measurements were lower. Ahmet proposed the group to build a simple model to assess potential deformation during probe-based thickness measurement. Snehal will follow up with this.

   • Ahmet created a wiki page for convergence optimization of Open Knee(s) models as part of the use cases. The goal is to increase simulation speed without compromising simulation results. The study will target at identifying the role of boundary conditions, tolerance criteria and other solver settings, material properties, and new model features on convergence. The initial approach will use passive flexion as the loading case and conduct a brute force grid search on simulation parameters. Craig will be working on a Python script to allow user to specify specify multiple parameters and multiple values for each parameter, e.g. 5 parameters, 5 levels => 5^5 simulations. When using one node with 16 threads, the group can conduct at most 18 simulations in parallel at the high performance computing facilities of the Cleveland Clinic.

2. Discuss Mach-1 tissue testing system issues.
   • TBD
3. Decide immediate action items for the next meeting.
   • See Immediate Action Items above.
4. Other.
   • TBD