Subtalar Joint Motion with Ankle Restriction.wmv

In this fresh-frozen cadaver foot, that has been thawed to room temperature, with the tibia securely fixed with a steel rod and the Achilles tendon tethered with a cable, retro-reflective marker clusters were placed into the tibia, talus and calcaneus in order to determine whether the subtalar joint could be rotated without significant rotation of the tibial-talar joint (i.e. ankle joint). It can be seen in the video that, by loading the forefoot with a dorsiflexion force that, in turn, placed a tensile force on the Achilles tendon and placed increased compression force at the ankle joint, that the talar marker moves very little relative to the tibial marker, indicating little ankle joint motion. Using these same concepts, the three-dimensional location of the subtalar joint axis may be determined by restriction of ankle joint motion in live subjects without bone pins drilled into the talus simply by measuring calcaneal to tibial motion with a similar protocol.

Kevin A. Kirby, DPM
Adjunct Clinical Professor of Biomechanics
California School of Podiatric Medicine

Category:

Science & Technology

Tags:

• subtalar
• joint
• axis
• foot
• motion

[warmplan]

this is great very informative!

[530BigBen]

@kleinpartyof4 Lol XD

[kleinpartyof4]

I currently have a T/T ankle joint Fusion , I am now needing my Subtalar Joint Fused , This was very helpful to Identifiy what motion I will be Loosing have this joint fused. Thanks ..

[smokeysify]

THANKS! this is an awesome video for anyone studying ankle anatomy

[Neodymio]

Epic!

[georgeskevo]

just fuck of !

[ma0431]

@georgeskevo

you should really look into things and think about why that would be on here before you open your mouth and look silly.

[georgeskevo]

the thing is nobody is tracking youtube.... i'm thinking of your rights just for putting that online !!!! it is idiot !

[georgeskevo]

WTFFFFFFFFFFFF are you crazy or what????? holy shit !!!!!! u put a real lower leg and shot video? you'r fucking crazy assholes !!!!

[footpro1]

OMG, the comments are hilarious! Had a good laugh at the shock this video generated.

Kevin is well known for his innovative contributions to biomechanics, very cool model!

Just to completely gross the lay person watching this, notice the drip at 0:19 off the proximal end of the lower leg!