[🍉🌶🍓💖목말밑관절] STJ - Open Kinetic Chain Measurement and Neutral Position Calcculation

* Clinical Index of STJ Motion

    : Frontal plane motion of the Calcaneus

      (RCSP : Resting Calcaneal Stance Potion) 🍖 발꿈치뼈 후방관찰

       1) Varus (+) , Valgus (-)

       2) STJ Sup (+), STJ Pro (-)

 

  * Normal Calcaneal Index

      Adults 0~2

      Child 6-7 yr, o~2

      Child 0-1 yr, -7~2   

 

* STJ ROM

      Pronation - Calcaneal Eversion

      Supination - Calcaneal Inversion

* Neutral position of STJ

The foot is neither supinated nor pronated

–Sup : Pro = 2:1 = 20o : 10o

Average total ROM of STJ Š 30o of calcaneal frontal plane motion

Minimum total STJ ROM for normal ambulation

8o~12o (4o~6o pronation, 4o~6o supination), but slightly more pronation than supination require