First of all, thanks for bringing this video to my attention again. Pretty sure this is the exact problem with my crappy ankle ROM problem. I have so much tightness in the area between where the achilles attaches to the calcaneus and the medial malleolus that my heel is being rotated up and inward. The tightness then continues up along the tibia to just below the knee. The result is my talus is getting wedged up and my cuboid is getting pushed out.  

Goodness gracious! My cuboid had just popped out last week. I believe it’s from a combo of poor ankle rom, tight peroneus longus and tight calf muscles, all thanks to the increase in running I’d suddenly started. My ankle lacks ROM, especially extroversion and dorsiflexion (two that I really need for running! doh!) I think I smoked my calves and then was jamming my ankle on each landing. Baaaaad me, I know. (I Pose run, but just haven’t built volume up yet.) My Huz pushed my cubiod back in place (no joke! thank you google) and I experienced immediate relief and total relief of aches in about two days. Back to walking with a pack but not running yet. Serious calf soreness still. I’m massaging out and now a even tighter left ankle and heel with some arch twinges. Doing Yoga Tune Up Jill Miller feet and ankles “prescription” and it is helping but not enough.

I understand that I could easily reinjure this and the ligaments could get lax if I keep straining it. What are some other things that need to be addressed that I’m missing here?

Fibula, ankle work, foot work, calf work…any thing else to add? I agree- my ankles and heels are not moving…like concrete. Are there any “secret” parts that are tight that may be contributing to this cuboid giving way?

It may not just be your ankle rom.
Do you hips have any tightness?
Have you seen these?
Pro Episode # 44: The Last 25% of Your Ankle Restriction (Snatches and Pistols here we come!)
Squat Quick Test: Is it your Ankles or Hips?
Episode 285: Sliding Surfaces; Ankle Range of Motion Case Study Part 1
Episode 285: Sliding Surfaces; Ankle Range of Motion Case Study Part 2

Thanks Kaitlin. Yes, I have all sorts of hip tightness that comes and goes based on activities. Arches are good. Sliding surface is ok but there is no skin slack to slide. Heel cords are getting tight. Just tore some peroneal tendon anchors. Oh joy. What role does the hip have with the calf, ankle. What “lack of” doe the hips present when the ankle has problems? Anterior hip stretching has been amazing for me.

It sounds like you have identified the areas/places that need attention.
Tight hips can effect everything down stream and limit your ability to perform certain movements or ranges.
With limited internal rotation, external rotation or both will result in your body making compensations in other places to feed slack to the hip to perform a movement or skill.
Limitations at the hip may be where ankle problems originate. You see the issue at the ankle, but this may not be the root cause of the issue.
Improved sliding surfaces and skin slack= less stress within system when moving. The movement is less expensive to perform when sliding surfaces move as they are designed to.
Tight heel cords can impact aspects up and down stream from compensations within the system.