Great to hear you purchased a Marc Pro to help with your recovery.
Do you feel you would benefit from increased circulation and evacuation of fluid that is built up in your knee or other areas?
Mobilizing above and below would be wise in conjunction. Test and retest
on everything. 
If it doesn’t then the issue may need professional
evaluation.
Email me [email protected] and we can look at your recovery plan.
Look forward to helping you with this.