Recurring Meeting of Cleveland Clinic Core Team

Date: July 14, 2015

Time: 10:30 AM EST

Means: In person meeting

Attendees:

1. Craig Bennetts
2. Snehal Chokhandre
3. Robb Colbrunn
4. Omar Gad
5. Connor Lough
6. Diana Suciu

Agenda:

1. Discuss immediate action items from the last meeting.
2. Discuss joint testing data dissemination package organization for oks001.
3. Decide immediate action items for the next meeting.
4. Other.

Immediate Action Items:

• Craig
  • Provide sample MR images for oks008 in the relevant wiki page.
• Snehal

  • Enjoy your wedding in India!!!

  • Continue testing all tissue types at 20%/s to evaluate the capacity for a simplified testing scheme.
  • Schedule imaging for the remainder of the year.
• Robb
  • Email Ahmet to provide feeback on dissemination of oks001 mechanical testing data.
• All Students
  • Continue segmentation of specified model features.
  • Put mid-term presentations in 'Summer2015/doc/' folder in the repository.
  • Update/review image segmentation and geometry generation specifications.
• Connor
  • Finish segmenting registration markers.
  • Work with Robb to finish registration error estimation script relying on marker distances and angles (patellofemoral marker?).
  • Complete definition of springs between tibia and menisci in Open Knee(s) - Generation 1 model.
• Diana
  • Continue working with Robb/Tara to complete verification of contact pressure (using Tekscan original files).
  • Complete definition of springs between MCL and medial meniscus in Open Knee(s) - Generation 1 model.
• Omar
  • Complete definition of springs to represent transverse ligaments between menisci in Open Knee(s) - Generation 1 model.
• Raghav
  • Complete features for removal of artificial thickness measurements.
  • Start learning FEBio for future implementation of springs to represent additional structures.

Ongoing Action Items:

• Ahmet
  • Dissemination of joint mechanics testing data.
  • Prepare flowcharts to describe data flow for pre-processing of joint kinematics/kinetics data.
• Craig
  • Anatomical imaging manuscript.
  • Large-scale analysis of simulation parameters for convergence.
• Snehal
  • Continue interacting up with Biomomentum, Inc. about mechanical testing system tuning features.
  • Complete the additional structured testing plan for tuning the system for different sample sizes, strain levels and strain rates.
  • Pivot shift manuscript.

  • Cruciate ligament modeling & simulation.

  • Evaluate alternative tissue testing strategy.
• Robb
  • Patellofemoral joint experimentation manuscript.
• Tara
  • Tibiofemoral joint experimentation manuscript.

Notes:

1. Discuss immediate action items from the last meeting.
   • Snehal saw strange rise in force for tension testing after applying displacement (20%/s); discussed possible timing issues with Robb.
   • Robb performed post-experiment calibration for pressure sensor (600 N applied, was measuring 490 N, 5 weeks post experiment).
   • Diana segmented all structures for oks001.
   • Diana worked with Tara to get Tekscan data for pressure sensor.
   • Omar segmented half of the bones in oks001.
   • Omar discussed FEBio and springs with Raghav.
   • Omar completed defining springs for the transverse ligament (900 N/mm = 3 parallel springs x 300 N/mm); convergence was 82 steps for tension-only springs (was 76 steps for non-tension-only springs).
   • Connor segmented all registration markers and worked on registration error script.
   • Raghav took pictures with Snehal to determine best background/lighting for image-based tissue thickness measurement.
   • Raghav found there was a 10% error for image-based method with respect to the LVDT measure system results.
2. Decide immediate action items for the next meeting.
   • See Immediate Action Items above.
3. Other.
   • Follow-up: Ahmet previously asked all mid-term presentations to be put in 'Summer2015/doc/' folder in the repository.