Prosthetic CPM Actual Test / 2025 – 2026 /
Most Recent Version with Well- Defined
Questions and Thorough Explained
Answers / 100% Solved / Already Graded
A+
TF Bench Alignment
5* socket flexion (+contracture)
6-7* socket adduction (or match sound)
Socket medial wall parallel to line of progression
-Knee: 5-25 mm posterior to weightline, external rotation 3-5*
-Foot: 12-37mm outset from IT, 5-7* external rotation
TT Bench Alignment
5* socket flexion (+contracture)
5* socket adduction (or match sound)
-Foot: 37mm posterior to midline (SACH) or 1/3 of foot (DR)
-Foot: 12 mm inset to midlineder
Info for Px Eval
Name, Age, DOB, Sex
Ht, Wt
Meds, comorbidities
Amp site/cause/date
ADLs/vocational/avocational
Goals!
Home status/environment
Work status/environment
PT/OT, assistive devices used
Current/previous px treatment
MMT, ROM
Sensation
,Condition of residual limb
Condition of contralateral/upper extremities
K-level/AMP
K0
The patient does not have the ability or potential to ambulate
or transfer safely
K1
Prosthesis for transfers or ambulation at fixed cadence;
household ambulator
K2
Ability to traverse low level environmental barriers; limited
community ambulator, fixed cadence
K3
Ambulation at variable cadence; prosthetic utilization beyond
simple locomotion; "unlimited" community ambulator, traverse
most environmental barriers
K4
Exceeds basic ambulation skills, exhibiting high impact,
stress, or energy levels; child, active adult, or athlete.
K1 feet
SACH, Single axis, safe
K2 feet
Multiaxial, flexible keel
K3-4
Dynamic response (also often multiaxial)
With vertical shock
Shock & torque absorbers
External power feet
K1-3, all cadence/terrain
-Pros: propulsion, dorsi/plantarflexion
-Cons: batteries/weight/cost/processing speed
, Single axis feet
-Pros: inexpensive, durable
-Cons: rigid forefoot, not energy efficient, not suitable for
uneven surfaces
SACH feet
-Pros: provides stability in early stance
-Cons: DF stop increases knee hyperextesion
Flexible keel
-Pros: provides easy rollover, smooth transition from heel
strike to toe off, allows natural sagittal plane motion, reduces
socket foreces on residual limb, improves walking safety,
reliable
-Cons: limited push off, increased cost
Multiaxial feet
-Pros: Accommodates uneven terrain, decreases stress on
skin and prosthesis
-Con: Increased weight/maintenance, cost
Dynamic Response feet
-Pros: use with increased activity level, energy storing,
reduces impact to joints and the residual limb, decreased
walking effort/increased push off
-Cons: increased cost/weight
K1-K2 knees - control
Fiction/mechanical - single speed ambulators
May have manual lock feature
Weight activated stance control
K3-4 knees - control
Fluid (cadence responsiveness) hydraulic or pneumatic
-Pros: variable cadence, swing and stance control, more
natural gait
-Cons: increased weight/maintenance/cost
Microprocessor (fluid controlled by "computer chip")
Most Recent Version with Well- Defined
Questions and Thorough Explained
Answers / 100% Solved / Already Graded
A+
TF Bench Alignment
5* socket flexion (+contracture)
6-7* socket adduction (or match sound)
Socket medial wall parallel to line of progression
-Knee: 5-25 mm posterior to weightline, external rotation 3-5*
-Foot: 12-37mm outset from IT, 5-7* external rotation
TT Bench Alignment
5* socket flexion (+contracture)
5* socket adduction (or match sound)
-Foot: 37mm posterior to midline (SACH) or 1/3 of foot (DR)
-Foot: 12 mm inset to midlineder
Info for Px Eval
Name, Age, DOB, Sex
Ht, Wt
Meds, comorbidities
Amp site/cause/date
ADLs/vocational/avocational
Goals!
Home status/environment
Work status/environment
PT/OT, assistive devices used
Current/previous px treatment
MMT, ROM
Sensation
,Condition of residual limb
Condition of contralateral/upper extremities
K-level/AMP
K0
The patient does not have the ability or potential to ambulate
or transfer safely
K1
Prosthesis for transfers or ambulation at fixed cadence;
household ambulator
K2
Ability to traverse low level environmental barriers; limited
community ambulator, fixed cadence
K3
Ambulation at variable cadence; prosthetic utilization beyond
simple locomotion; "unlimited" community ambulator, traverse
most environmental barriers
K4
Exceeds basic ambulation skills, exhibiting high impact,
stress, or energy levels; child, active adult, or athlete.
K1 feet
SACH, Single axis, safe
K2 feet
Multiaxial, flexible keel
K3-4
Dynamic response (also often multiaxial)
With vertical shock
Shock & torque absorbers
External power feet
K1-3, all cadence/terrain
-Pros: propulsion, dorsi/plantarflexion
-Cons: batteries/weight/cost/processing speed
, Single axis feet
-Pros: inexpensive, durable
-Cons: rigid forefoot, not energy efficient, not suitable for
uneven surfaces
SACH feet
-Pros: provides stability in early stance
-Cons: DF stop increases knee hyperextesion
Flexible keel
-Pros: provides easy rollover, smooth transition from heel
strike to toe off, allows natural sagittal plane motion, reduces
socket foreces on residual limb, improves walking safety,
reliable
-Cons: limited push off, increased cost
Multiaxial feet
-Pros: Accommodates uneven terrain, decreases stress on
skin and prosthesis
-Con: Increased weight/maintenance, cost
Dynamic Response feet
-Pros: use with increased activity level, energy storing,
reduces impact to joints and the residual limb, decreased
walking effort/increased push off
-Cons: increased cost/weight
K1-K2 knees - control
Fiction/mechanical - single speed ambulators
May have manual lock feature
Weight activated stance control
K3-4 knees - control
Fluid (cadence responsiveness) hydraulic or pneumatic
-Pros: variable cadence, swing and stance control, more
natural gait
-Cons: increased weight/maintenance/cost
Microprocessor (fluid controlled by "computer chip")
