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!