The medical background
2 systems:
1. Passive shock absorbtion system
2. Active shock absorbtion system
The human shock absorbtion system
Discs
Tendons and ligaments
Cartilage
The passive shock absorbtion system
„Small supportive and stabilizing muscles“
The active shock absorbtion system
Anatomy (left ankle-joint/ rear view)
Lateral upwards turn of heel bone
Natural heel strike on lateral part of heel bone(Supination)
The natural roll through
The natural roll through
Loading in the outer heel area during heel strike (Supination). Roll-through begins.
Foot turns from outer to inner side (Pronation) and midfoot twists inwards joint by joint (Torsion)
Roll-through from the forefoot to the big toe.
How Joya can be supportive with foot pain
Fallen arch
Flat foot
Skew foot
Joyas' supportive, therapeutic effect:
• Exercise muscles around foot joints• Natural roll-through via outside of foot
Cause:
• Weak foot muscles (e.g. due to lack of exercise, rarely walking barefoot)• Flat shoes without footbed
Splayfoot
Joyas' supportive, therapeutic effect:
• Exercise muscles around foot joints• Soft PU takes pressure off forefoot • Natural roll-through via outside of foot
Cause:
• Wearing unsuitable footwear, especially high heels• With splayed feet there is too much pressure on the second to fourth metatarsal heads,
creating fallen transverse arches.
Metatarsalgia
Cause:
• Mechanical overload of forefoot (especially high heels)• Fashionable,tight shoes
Joyas' supportive, therapeutic effect:
• Soft PU takes pressure off forefoot • Natural roll-through via outside of foot
Joyas' supportive, therapeutic effect:
• Soft PU takes pressure off forefoot • Natural roll-through via outside of foot
Hallux Valgus (Bunions)
Hallux rigidus (+ stiff big toe joint)
Cause:
• Mechanical overload of forefoot (especially high heels)• Fashionable,tight shoes
Plantar fasciitis
Heel spur
Joyas' supportive, therapeutic effect:
• Exercise muscles around foot joints• Natural roll- through (Relief of plantar fascia)• Stretch of calf muculature (Sink in movement in soft PU)
Cause:
• Mechanical overload (mainly due to fallen arches or high arches..)• Micro-injuries
How Joya can be supportive with back pain, arthrosis and diabetes
Joyas' supportive, therapeutic effect:
• Pelvic movement as the foot sinks into the soft polyurethane sole• Load equally distributed when standing• Soft sole cushion impacts
Cause:
• Mechanical stress and overload• Sedentary lifestyle (Shortens the hip flexor and
causes a forward rotation of pelvis)
Back problems
Joyas' supportive, therapeutic effect:
• Training of small stabilizing muscles around ankle- and hip joint• Stabilization of leg- axis• Cushioning effect of soft PU
Cause:
• Abrasion of cartilage due to mechanical stress and overload
Joint- hip – knee arthrosis
Diabetes is a metabolic disease.
It may result in:
Nerve damage (neuropathy) Diabetic foot
Joyas' supportive, therapeutic effect:
• Soft sole relieves pressure on damaged structures• Sensorimotor exercise (proprioception)• Comfort last (stops rubbing)
Diabetes
Joya – the world’s softest shoe!