Prosthetics foot and its types SACH foot , jaipur foot, multiflex foot, STEN foot, Advance foot biomechanics

1. PROSTHETIC FEET
-ESHA S. MALIK
MPO [1]st

2. TYPES OF PROSTHETIC FEET
ARTICULATED
• Single axis.
• Greis singer multiple-axis.
• Hydraulic multiple-axis.
NON ARTICULATED
• Solid-ankle cushion heel (SACH).
• Stored Energy(STEN) foot.
• Carbon Copy II foot.
• Seattle Foot.
• Flex-Foot.

3. SOLID ANKLE CUSHIONED HEEL

4. INDICATIONS CONTRAINDICATIONS ADVANTAGES DISADVANTAGES
All activity levels. Very high level activities. Light weight Heel cushion may loose its
elasticity with time.
Even terrain. Strong The rubber or heel cushion
may corrode with time.
Light weight components No moving parts.
Wet and dry environment. Little maintenance.
Fair shock absorption.

5. STORED ENERGY FOOT (STEN)
WOODEN
KEEL
RUBBER
PLUG

6. INDICATIONS CONTRAINDICATIONS ADVANTAGES DISADVANTAGES
Very active patients. Limited activity level. Provides a
smooth/natural gait
pattern.
Expensive.
Athletic patients. It is available in
waterproof material.

7. JAIPUR FOOT

8. SINGLE AXIS FOOT

9. INDICATIONS CONTRAINDICATIONS ADVANTAGES DISADVANTAGES
Weak
quadriceps
Wet/dry environment. Increased knee
stability.
High maintenance.
Distal anterior
tibia painful/
bony
The bumpers can be
adjusted.
Heavy
Hilly
environment.
Less cosmetic.
Tendency to be noisy.
Wet environment.

10. MULTI AXIS FOOT

11. INDICATIONS CONTRAINDICATIONS ADVANTAGES DISADVANTAGES
Rough or uneven terrain. Wet/ dirty environment. Provides a smooth
natural gait.
Increased weight.
Weak quadriceps. Limited activity level. Reduce torque on the
stump.
Increased maintenance.
Distal anterior tibia
painful / bony.
Patients who seldom walk
on uneven terrain.
It is easy to adjust. Wet environment will
cause rust/breakdown.

12. ENERGY RECOVERY FOOT

13. Types of energy recovery foot

14. PROSTHETIC FOOT ALIGNMNET
The abduction/adduction angle of the
stump should be carefully measured
during assessment.
Plumb line should be drawn on the
cast, transferred to the socket and
followed during bench alignment.
• External rotation 5 degrees in relation
to the line of progression

15. Rf-Daphne Wezenberg,, Andrea G. Cutti,Antonino Bruno, Han Houdijk, Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, the Netherlands; and Department of Research and Development,
Heliomare, Wijk aan Zee, the Netherlands; 2 Department of Research and Development, INAIL Prosthesis Centre, Vigorso di Budrio, Bologna, Italy
COMPARISON OF ENERGY STORING FOOT AND SOLID
ANKLE CUSHIONED HEEL.
Walking with a lower-limb prosthesis results in a higher metabolic energy cost than walking
with two intact limbs. Introduction of the energy storage and return (ESAR) foot, a passive-
elastic prosthetic foot was marketed that was able to more closely mimic the human ankle by
storing energy during stance and releasing this energy at push-off.
Abbreviations: COM = center of mass, COP = center of pres-sure, ESAR = energy storage
and return, SACH = solid-ankle cushioned heel.

16. Rf-Daphne Wezenberg,, Andrea G. Cutti,Antonino Bruno, Han Houdijk, Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, the Netherlands; and Department of Research and Development,
Heliomare, Wijk aan Zee, the Netherlands; 2 Department of Research and Development, INAIL Prosthesis Centre, Vigorso di Budrio, Bologna, Italy
AIM AND OBJECTIVE
ESAR feet are able to reduce the mechanical energy dissipated during the step-to step transition.
INCLUSION CRETERIA
Unilateral amputee.
Cause of amputation – Trauma.
EXCLUSION CRETARIA
Any musculoskeletal disorder or neurological disease.
METHEDOLOGY
Source: The study was approved by the INAIL research board (Commissione Tec-nico Scientifica; Budrio, Italy).
Data collection : Fifteen males with a unilateral amputation.

17. RESULT
Mechanical Work Performed on Center of Mass.
Rf-Daphne Wezenberg,, Andrea G. Cutti,Antonino Bruno, Han Houdijk, Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, the Netherlands; and Department of Research and Development, Heliomare,
Wijk aan Zee, the Netherlands; 2 Department of Research and Development, INAIL Prosthesis Centre, Vigorso di Budrio, Bologna, Italy

18. Prosthetic Push-Off Work
Rf-Daphne Wezenberg,, Andrea G. Cutti,Antonino Bruno, Han Houdijk, Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, the Netherlands; and Department of Research and Development, Heliomare,
Wijk aan Zee, the Netherlands; 2 Department of Research and Development, INAIL Prosthesis Centre, Vigorso di Budrio, Bologna, Italy

19. Rf-Daphne Wezenberg,, Andrea G. Cutti,Antonino Bruno, Han Houdijk, Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, the Netherlands; and Department of Research and Development,
Heliomare, Wijk aan Zee, the Netherlands; 2 Department of Research and Development, INAIL Prosthesis Centre, Vigorso di Budrio, Bologna, Italy