CO study materials
CO study resources

CO flashcards

CO · Build recall with a focused review session.

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Ankle-brachial index threshold
An ABI below 0.90 suggests peripheral arterial disease and warrants vascular evaluation before compression or rigid interface use.
Capillary refill normal range
Capillary refill of two seconds or less, with warm skin and palpable distal pulses, indicates adequate peripheral perfusion.
Residual limb length measurement
Measured in centimeters from a documented bony landmark, such as the tibial tuberosity, to the distal end of the residual limb.
Monofilament screening purpose
Testing multiple sites with a monofilament identifies absent protective sensation, which raises skin breakdown risk beneath a prosthetic or orthotic interface.
Compression contraindications
Uncompensated congestive heart failure, active deep vein thrombosis, and wet gangrene are absolute contraindications to compression or rigid interface use.
Medicare K-level definitions
K1 household ambulation, K2 limited community, K3 community with variable cadence, and K4 high-impact or high-energy mobility define component eligibility categories.
Measurable goal criteria
Treatment goals state a specific outcome such as distance walked or surface negotiated, with a target date and an assessment method.
Medical necessity documentation
A written physician order plus documentation of functional need supports reimbursement for prosthetic and orthotic components.
Interdisciplinary team roles
The physician establishes diagnosis and order, the prosthetist or orthotist designs and fits, and the therapist trains the patient.
Plan revision triggers
A material change in weight, activity level, K-level, or skin condition requires reassessment and possible revision of the treatment plan.
Transtibial socket flexion
Approximately five to seven degrees of flexion is built into a transtibial socket to support stability and smooth rollover.
Rectification principles
Relieve pressure-sensitive areas, build up load-tolerant areas, and maintain total contact where clinically indicated on the positive model.
Cast landmark transfer
Anatomical landmarks marked on the limb, such as the patellar tendon, must be transferred to the positive model to guide modification.
Scan artifact check
Digital scans must be inspected for missing data and motion artifact before export, since defects carry into the fabricated device.
Volume measurement timing
Circumferences should be recorded at the same time of day and at fixed intervals from the landmark to reduce volume-related variance.
Lamination lay-up documentation
Recording resin type, reinforcement material, and layer count allows the fabrication strength and weight to be reproduced later.
Proximal trim line function
Trim lines clear bony prominences and permit knee flexion without pinching, influencing relief and suspension performance.
Bench versus dynamic alignment
Bench alignment sets component angles before fitting, while dynamic alignment adjusts the device based on observed gait after the patient walks.
Fabrication defect identification
Delamination, voids, and sharp edges are fabrication defects that must be corrected before delivery rather than managed as fitting issues.
Suspension seal verification
Pin-lock, suction, sleeve, and belt systems must be checked for seal integrity and ease of donning before the device is delivered.
Static fitting checks
Verify total contact, absence of distal gap or excessive distal pressure, correct suspension, and tolerable pressure at bony prominences.
Dynamic gait observation points
Observe heel strike, midstance stability, toe-off, and swing clearance during walking, then adjust alignment for any observed deviation.
Skin inspection red flag
Redness persisting after twenty to thirty minutes of rest at a pressure point should be reported rather than ignored.
Graduated wear schedule
Begin with short wear intervals and increase tolerance progressively, documenting the schedule and the patient's response at delivery.
Delivery documentation contents
Record the device description, components, wear schedule, care instructions, and the training provided to the patient or caregiver.
Follow-up interval logic
New amputees and patients at high skin risk need shorter follow-up intervals than stable, long-term device users.
Outcome measure selection
Choose objective, repeatable measures such as timed walking tests and functional mobility scales, and compare results to baseline and goals.
Urgent evaluation triggers
Skin breakdown, unstable fit, sudden limb volume change, or component failure require immediate clinical evaluation rather than routine follow-up.
Repair versus replace decision
Weigh device age, warranty status, and functional need when deciding whether to repair or replace a prosthesis or orthosis.
Informed consent elements
Explain benefits, risks, alternatives, and costs before fitting, and document that the discussion occurred with the patient or caregiver.
Billing integrity rule
Bill only for the device actually delivered and documented; unbundling or upcoding without clinical justification constitutes fraud.
Scope of practice boundary
Provide only services within your licensure and certification, and refer the patient when the needed service falls outside that scope.