Recurring Meeting of Cleveland Clinic Core Team

Date: May 12, 2015

Time: 10:30 AM EST

Means: In person meeting

Attendees:

1. Snehal Chokhandre
2. Robb Colbrunn
3. Tara Bonner

Agenda:

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

Immediate Action Items:

• Craig
  • Update the results of convergence analysis attempts on Wiki.

• Robb & Snehal

  • Assess PID gains tuning for Mach-1 tissue testing system.

Ongoing Action Items:

• Ahmet
  • Dissemination of joint mechanics testing data.
  • Detail image segmentation specifications.
• Craig
  • Anatomical imaging manuscript.
  • Large-scale analysis of simulation parameters for convergence.
• Snehal
  • Pivot shift manuscript.

  • Cruciate ligament modeling & simulation.

  • Evaluate alternative tissue testing strategy.
• Robb
  • Patellofemoral joint experimentation manuscript.
  • Conversion of patellofemoral joint contact pressure data to ASCII format.
• Tara
  • Tibiofemoral joint experimentation manuscript.

Notes:

1. Discuss immediate action items from the last meeting.
   • Ahmet, Craig and Snehal met with Advisory board members Jack Andrish, MD; Morgan Jones, MD; and Yasin Dhaher, PhD to update them on project development in the last 6 months. Ahmet will update the meeting minutes once he has met with all the advisory board members.
   • Craig has been working on convergence analyses and will document the progress thus far and update the team in the next meeting.
   • Robb provided documentation on tdms file content. This will be helpful for disseminating the joint mechanical testing data as well as processing the data for running finite element models.
2. Discuss Mach-1 tissue testing system updates and test plans.
   • Snehal has been testing the updated software capabilities (improved acceleration settings). She tested the potential size, strain level and strain rate limits for the tissue samples. All tests were conducted using foam samples. Test included: a 2.5% strain in a 1.5 mm thick sample at 20%/s, 50%/s and 100%/s strain rate and 3% strain in a 15 mm long sample at 20%/s, 50%/s and 100%/s strain rate (using default PID settings). The testing system performed the closest to desired at 20%/s strain rate. Robb and Snehal will attempt to tune the PID settings to assess whether a higher strain rate can be applied. Snehal will also test actual tissue samples at 20%/s strain rate with default PID settings to ensure that the strain rate will work. She will also test the alternative protocol (load-unload using ramp) for various tissue types (using default system settings).
   • Snehal also noted that there is a lack of consensus on the tissue preconditioning parameters. This will be discussed further in the next meeting.
3. Decide immediate action items for the next meeting.
   • See immediate action items above.
4. Other.
   • A Research Experience for Undergraduates (REU) scholar Omar Gad will be joining the team for the summer and will be starting on May 19th.