BASIC MEASURING AND FITTING

Ideally this will be done on a plinth or measuring box.

A User Measurement - Pelvic Width
Corresponding Equipment Measurement - Seat Width
  A measurement of the maximum width of the hips at the level of the greater trochanter of the widest point.
  • Wheel access
  • Pelvic position and stability
  • Growth
B User Measurement - Sitting Depth (Upper Leg Length)
Corresponding Equipment Measurement - Seat Depth
  A measurement from the most posterior portion of the buttocks, or from the back plane to the posterior surface of the medical hamstring tendon at the back of knee. A right and left measurement should be taken into account for any discrepancy.
  • Pressure distribution
  • Pelvic position and stability
  • Overall frame length / maneuverability
C User Measurement - Lower Leg Length
Corresponding Equipment Measurement - Footrest / Legrest Length
(Note: Legrest length is the measurement minus the cushion depression)
  The distance from under the knee (popliteal fossa) to the bottom of the heel, or the most interior weight bearing surface of the foot if the ankle is fixed in planar or dorsi flexion. Consider any additional length due to shoe or orthotics that would normally be worn by the individual. It is important to measure the right and left lower leg in the same situation to account for any leg length discrepancies.
  • Pressure distribution
  • Pelvic position and stability
D/G User Measurement - Inferior Angle of the Scapula (each side)
Corresponding Equipment Measurement - Active Back Height
(Note: Back height is the functional back measurement plus the cushion depression)
 

A measurement from the seat rail plane to the inferior angle of the scapula. Active back height should be positioned at one inch above or one inch below the inferior angle of the scapula." Possible pressure point

  • Thoracic and lumbar support and stability
  • Scapula stability and/or mobility
E User Measurement - Shoulder Height
Corresponding Equipment Measurement - Back Height / Grommet
Height

(Note: Back height or grommet height is the measurement plus the cushion depression)

 

The measurement from the seat rail plane to the top of the shoulder.

  • Scapular stability and mobility
  • Thoracic and lumbar support and stability
  • Head control
F User Measurement - Sitting Height
Corresponding Equipment Measurement - Head Support Height

(Note: The head support height is equal to the measurement plus the cushion depression)
  • Reference point for the amount of adjustment needed in the head support hardware
H User Measurement - Thoracic Depth
Corresponding Equipment Measurement - Thoracic Support Size or Positioning Fore/Aft

(Note: When considering the thoracic support size it is important to take into consideration the depth of the back support surface and its placement relative to the back uprights)
  The depth of the thoracic cavity is taken at the point on the thorax determined to be appropriate for lateral support.
I User Measurement - Pre-Ischial Crease
Corresponding Equipment Measurement - Ramp Position (anti-thrust seat)
  A measurement from the most posterior portion of the buttocks, or from the posterior surface of the medical hamstring tendon at the back of the knee. A right and left measurement should be taken into account for any discrepancy or asymmetry.
JR/JL User Measurement - Elbow Height (each side)
Corresponding Equipment Measurement - Armrest Height

(Note: Armrest height is equal to the measurement plus the cushion depression)
 

he measurement from the seat rail plane to the inferior portion of the elbow when the upper extremity is positioned in 90 degrees of elbow flexion and slight shoulder flexion and abdution. Consider taking a right and left measurement given a pelvic obliquity, scoliosis, right or left tone asymmetries.

  • Thoracic stabilisation
  • Head control
  • Functional work surface
K User Measurement - Superior Angle of Anterior Pelvic Tilt
Corresponding Equipment Measurement - Position of Bi-Angular Back Fold Point

 

  A measurement from the seat rail plane to the position of the top of the anterior tilt. The bi-angular back fold should be positioned approximately one inch higher than this line (usually 1" - 2" below waistline)
L

User Measurement - Foot Length and Width
Corresponding Equipment Measurement - Footplate / Shoe Holder Length and Width

 

The user's foot length and width measurement should be taken to include the shoes and any ankle or foot orthotics devices normally worn by the individual.

  • Foot support and position
  • Foot protection
  • Foot clearance