Certified Foot Care Nurse (CFCN) Practice
Examination Questions & 100% Verified
Answers # Ace Your 2026 RN ATI Med Surg
Proctored Exam with Confidence!
1. A patient with diabetes presents with a callus on the plantar aspect of the
foot beneath the second metatarsal head. What is the primary cause of this callus
formation?
Answer: Repetitive mechanical pressure and friction due to motor
neuropathy causing foot deformity and abnormal pressure distribution.
Rationale: Diabetic motor neuropathy leads to intrinsic muscle atrophy,
causing hammer toe deformity and prominent metatarsal heads. The body
responds to increased pressure with hyperkeratosis (callus) formation to protect
the underlying tissue.
2. What is the proper technique for reducing a thickened toenail (onychauxis) in
a patient with peripheral arterial disease?
Answer: Use a nail drill or manual file to reduce thickness from the dorsal
surface, filing in a single direction, avoiding aggressive debridement or breaking
the skin.
Rationale: Patients with PAD have compromised circulation and poor
healing. Conservative thinning is safe; sharp debridement into the sulci or
aggressive trimming risks creating a wound that will not heal, potentially leading
to amputation.
, 3. A patient has a macerated, white, and peeling interdigital space between the
fourth and fifth toes with a foul odor. What is the most likely diagnosis?
Answer: Tinea pedis (Athlete's foot) with secondary bacterial infection or
maceration.
Rationale: Fungal infection thrives in the moist, warm interdigital spaces.
The maceration and odor suggest a secondary gram negative bacterial infection.
Treatment includes antifungal agents and keeping the area dry (using lamb's wool
or moisture wicking separators).
4. What is the gold standard for offloading a diabetic neuropathic plantar ulcer?
Answer: Total Contact Cast (TCC) or a removable cast walker rendered non
removable.
Rationale: Offloading is the cornerstone of diabetic foot ulcer treatment.
TCC redistributes pressure across the entire plantar surface and lower leg. The
patient cannot remove it, ensuring compliance.
5. A patient with long standing diabetes presents with a warm, swollen, and
erythematous foot. The foot has bounding pulses, and x rays reveal
fragmentation and collapse of the midfoot arch. What is this condition?
Answer: Charcot Neuroarthropathy (Charcot foot), specifically the acute
phase.
Rationale: This is a non infectious, destructive process of the bones and
joints caused by neuropathy. It mimics infection but is distinguished by the
bounding pulses and "rocker bottom" deformity. Strict non weight bearing is
essential to prevent catastrophic collapse.
6. What is the proper technique for trimming a normal, non involuted toenail
to prevent ingrown toenails (onychocryptosis)?
, Answer: Cut the nail straight across, keeping it even with the tip of the toe;
file the corners smooth without rounding them deeply into the sulci.
Rationale: Rounding the corners leaves a nail spicule below the visible line.
As the nail grows forward, the sharp point pierces the lateral nail fold, causing
pain, inflammation, and infection.
7. A patient with venous insufficiency presents with thickened, discolored nails,
dry scaly skin, and severe edema of the lower legs. What is the priority
intervention before foot care is performed?
Answer: Assess the arterial circulation (palpation of dorsalis pedis and
posterior tibial pulses, and Ankle Brachial Index).
Rationale: Venous insufficiency often co exists with arterial disease. Sharp
debridement on a foot with significant arterial compromise can precipitate a non
healing wound or gangrene.
8. What is the primary conservative treatment for a painful, mild hallux valgus
(bunion) deformity in an elderly patient who is not a surgical candidate?
Answer: Properly fitted extra depth shoes with a wide toe box, bunion
padding, and orthotics to offload the prominent medial eminence.
Rationale: Conservative care focuses on accommodating the deformity,
reducing pressure and friction, and managing pain. Surgery is reserved for severe
deformity or failed conservative therapy.
9. A patient presents with a soft, painful, punched out ulcer on the lateral
malleolus surrounded by a bluish red halo at the edge. The leg is edematous and
warm. What is the etiology?
Answer: Venous stasis ulcer.
Rationale: Venous ulcers are the most common lower leg ulcer,
characterized by hemosiderin staining, edema, and moderate pain that improves
Examination Questions & 100% Verified
Answers # Ace Your 2026 RN ATI Med Surg
Proctored Exam with Confidence!
1. A patient with diabetes presents with a callus on the plantar aspect of the
foot beneath the second metatarsal head. What is the primary cause of this callus
formation?
Answer: Repetitive mechanical pressure and friction due to motor
neuropathy causing foot deformity and abnormal pressure distribution.
Rationale: Diabetic motor neuropathy leads to intrinsic muscle atrophy,
causing hammer toe deformity and prominent metatarsal heads. The body
responds to increased pressure with hyperkeratosis (callus) formation to protect
the underlying tissue.
2. What is the proper technique for reducing a thickened toenail (onychauxis) in
a patient with peripheral arterial disease?
Answer: Use a nail drill or manual file to reduce thickness from the dorsal
surface, filing in a single direction, avoiding aggressive debridement or breaking
the skin.
Rationale: Patients with PAD have compromised circulation and poor
healing. Conservative thinning is safe; sharp debridement into the sulci or
aggressive trimming risks creating a wound that will not heal, potentially leading
to amputation.
, 3. A patient has a macerated, white, and peeling interdigital space between the
fourth and fifth toes with a foul odor. What is the most likely diagnosis?
Answer: Tinea pedis (Athlete's foot) with secondary bacterial infection or
maceration.
Rationale: Fungal infection thrives in the moist, warm interdigital spaces.
The maceration and odor suggest a secondary gram negative bacterial infection.
Treatment includes antifungal agents and keeping the area dry (using lamb's wool
or moisture wicking separators).
4. What is the gold standard for offloading a diabetic neuropathic plantar ulcer?
Answer: Total Contact Cast (TCC) or a removable cast walker rendered non
removable.
Rationale: Offloading is the cornerstone of diabetic foot ulcer treatment.
TCC redistributes pressure across the entire plantar surface and lower leg. The
patient cannot remove it, ensuring compliance.
5. A patient with long standing diabetes presents with a warm, swollen, and
erythematous foot. The foot has bounding pulses, and x rays reveal
fragmentation and collapse of the midfoot arch. What is this condition?
Answer: Charcot Neuroarthropathy (Charcot foot), specifically the acute
phase.
Rationale: This is a non infectious, destructive process of the bones and
joints caused by neuropathy. It mimics infection but is distinguished by the
bounding pulses and "rocker bottom" deformity. Strict non weight bearing is
essential to prevent catastrophic collapse.
6. What is the proper technique for trimming a normal, non involuted toenail
to prevent ingrown toenails (onychocryptosis)?
, Answer: Cut the nail straight across, keeping it even with the tip of the toe;
file the corners smooth without rounding them deeply into the sulci.
Rationale: Rounding the corners leaves a nail spicule below the visible line.
As the nail grows forward, the sharp point pierces the lateral nail fold, causing
pain, inflammation, and infection.
7. A patient with venous insufficiency presents with thickened, discolored nails,
dry scaly skin, and severe edema of the lower legs. What is the priority
intervention before foot care is performed?
Answer: Assess the arterial circulation (palpation of dorsalis pedis and
posterior tibial pulses, and Ankle Brachial Index).
Rationale: Venous insufficiency often co exists with arterial disease. Sharp
debridement on a foot with significant arterial compromise can precipitate a non
healing wound or gangrene.
8. What is the primary conservative treatment for a painful, mild hallux valgus
(bunion) deformity in an elderly patient who is not a surgical candidate?
Answer: Properly fitted extra depth shoes with a wide toe box, bunion
padding, and orthotics to offload the prominent medial eminence.
Rationale: Conservative care focuses on accommodating the deformity,
reducing pressure and friction, and managing pain. Surgery is reserved for severe
deformity or failed conservative therapy.
9. A patient presents with a soft, painful, punched out ulcer on the lateral
malleolus surrounded by a bluish red halo at the edge. The leg is edematous and
warm. What is the etiology?
Answer: Venous stasis ulcer.
Rationale: Venous ulcers are the most common lower leg ulcer,
characterized by hemosiderin staining, edema, and moderate pain that improves
