Prosthetic CPM Exam Questions & Answers 2023/2024
TF Bench Alignment - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-The patient does not have the ability or potential to ambulate or transfer safely
K1 - ANSWER-Prosthesis for transfers or ambulation at fixed cadence; household ambulator
K2 - ANSWER-Ability to traverse low level environmental barriers; limited community ambulator, fixed cadence
K3 - ANSWER-Ambulation at variable cadence; prosthetic utilization beyond simple locomotion; "unlimited" community ambulator, traverse most environmental barriers
K4 - ANSWER-Exceeds basic ambulation skills, exhibiting high impact, stress, or energy levels; child, active adult, or athlete.
K1 feet - ANSWER-SACH, Single axis, safe
K2 feet - ANSWER-Multiaxial, flexible keel
K3-4 - ANSWER-Dynamic response (also often multiaxial)
With vertical shock
Shock & torque absorbers
External power feet - ANSWER-K1-3, all cadence/terrain
Pros: propulsion, dorsi/plantarflexion
Cons: batteries/weight/cost/processing speed
Single axis feet - ANSWER-Pros: inexpensive, durable
Cons: rigid forefoot, not energy efficient, not suitable for uneven surfaces
TF Bench Alignment - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-The patient does not have the ability or potential to ambulate or transfer safely
K1 - ANSWER-Prosthesis for transfers or ambulation at fixed cadence; household ambulator
K2 - ANSWER-Ability to traverse low level environmental barriers; limited community ambulator, fixed cadence
K3 - ANSWER-Ambulation at variable cadence; prosthetic utilization beyond simple locomotion; "unlimited" community ambulator, traverse most environmental barriers
K4 - ANSWER-Exceeds basic ambulation skills, exhibiting high impact, stress, or energy levels; child, active adult, or athlete.
K1 feet - ANSWER-SACH, Single axis, safe
K2 feet - ANSWER-Multiaxial, flexible keel
K3-4 - ANSWER-Dynamic response (also often multiaxial)
With vertical shock
Shock & torque absorbers
External power feet - ANSWER-K1-3, all cadence/terrain
Pros: propulsion, dorsi/plantarflexion
Cons: batteries/weight/cost/processing speed
Single axis feet - ANSWER-Pros: inexpensive, durable
Cons: rigid forefoot, not energy efficient, not suitable for uneven surfaces
