This practice set contains high-yield board review questions covering key concepts in 8. Foot and Ankle. Each clinical scenario is designed to test your diagnostic and management skills relevant to this subspecialty.
Question 3701
Topic: 8. Foot and Ankle
A 55-year-old male presents with dorsal foot pain localized to the first metatarsophalangeal (MTP) joint. Examination reveals a dorsal osteophyte and pain primarily at the end-ranges of dorsiflexion, with preserved mid-range motion (Coughlin Stage 2 Hallux Rigidus). Non-operative measures have failed. What is the most appropriate surgical treatment?
Correct Answer & Explanation
. Cheilectomy
Explanation
Cheilectomy (removal of the dorsal osteophyte and up to 30% of the dorsal metatarsal head) is the procedure of choice for Stage 1 and 2 hallux rigidus with pain primarily on terminal dorsiflexion. First MTP fusion is preferred for end-stage (Stage 3 and 4) disease.
Question 3702
Topic: 8. Foot and Ankle
A 58-year-old patient with long-standing, poorly controlled diabetes presents with an acutely swollen, erythematous, and warm unilateral foot. Radiographs demonstrate periarticular fragmentation and debris at the tarsometatarsal joints. Elevation of the limb for 10 minutes leads to resolution of the erythema. What is the best initial management?
Correct Answer & Explanation
. Total contact casting
Explanation
The clinical picture describes acute Eichenholtz Stage I Charcot neuroarthropathy. The resolution of redness with elevation helps differentiate it from infection. The standard of care for acute Charcot is offloading with a total contact cast.
Question 3703
Topic: 8. Foot and Ankle
A 14-year-old boy is evaluated for recurrent ankle sprains and a rigid, painful flatfoot. On physical exam, subtalar motion is severely restricted. Which radiographic view is most sensitive for diagnosing the most likely pathology?
Correct Answer & Explanation
. 45-degree internal oblique view of the foot
Explanation
The patient likely has a tarsal coalition. A calcaneonavicular coalition (most common) is best visualized on a 45-degree internal oblique view, whereas a talocalcaneal coalition is best seen on a Harris axial view or CT.
Question 3704
Topic: Midfoot & Hindfoot
A 50-year-old overweight female presents with progressive flattening of her left medial longitudinal arch. Examination reveals an inability to perform a single-leg heel raise and forefoot abduction with >30% talonavicular uncoverage on radiographs, but the hindfoot remains manually correctable. What is the appropriate surgical classification and treatment?
Stage IIB adult acquired flatfoot deformity (flexible, but with severe forefoot abduction / >30% TN uncoverage) typically requires a lateral column lengthening (e.g., Evans osteotomy) in addition to FDL transfer and medial displacement calcaneal osteotomy.
Question 3705
Topic: 8. Foot and Ankle
When comparing outcomes of Total Ankle Arthroplasty (TAA) versus ankle arthrodesis for end-stage ankle osteoarthritis, TAA has been shown in long-term studies to have which of the following relative advantages?
Correct Answer & Explanation
. Lower incidence of progressive adjacent joint (subtalar) arthritis
Explanation
TAA preserves some sagittal plane motion, which has been shown to reduce abnormal stresses on adjacent joints, thereby decreasing the incidence or progression of subtalar and transverse tarsal arthritis compared to ankle arthrodesis.
Question 3706
Topic: 8. Foot and Ankle
A 24-year-old snowboarder lands hard following a jump, sustaining a forceful dorsiflexion and inversion injury to the ankle. He has lateral ankle pain mimicking a severe sprain, but radiographs reveal a fracture. Which of the following fractures is pathognomonic for this mechanism?
Correct Answer & Explanation
. Lateral process of the talus
Explanation
A 'snowboarder’s fracture' is a fracture of the lateral process of the talus. It is caused by severe dorsiflexion and inversion and is often misdiagnosed clinically as an anterior talofibular ligament sprain.
Question 3707
Topic: Ankle Trauma & Sports
A 13-year-old boy presents with ankle pain after an external rotation injury. Radiographs show a Salter-Harris III fracture of the anterolateral distal tibia. Which ligament's avulsion force is responsible for this specific fracture pattern?
Correct Answer & Explanation
. Anterior inferior tibiofibular ligament (AITFL)
Explanation
This describes a juvenile Tillaux fracture, caused by the pull of the anterior inferior tibiofibular ligament (AITFL) on the anterolateral epiphysis, which is the last portion of the distal tibial physis to close.
Question 3708
Topic: Midfoot & Hindfoot
A 45-year-old runner with recalcitrant plantar fasciitis undergoes a complete surgical release of the plantar fascia. Post-operatively, she complains of new-onset, severe lateral midfoot pain and a visibly flatter arch. This complication is most directly related to which of the following pathomechanical changes?
Correct Answer & Explanation
. Lateral column overload and cuboid syndrome
Explanation
Complete release of the plantar fascia destroys the 'windlass mechanism' supporting the arch. This leads to arch collapse and subsequent lateral column overload, which often presents as severe lateral midfoot or cuboid pain.
Question 3709
Topic: 8. Foot and Ankle
A 28-year-old man sustains a Hawkins type III talar neck fracture following a motor vehicle accident. He undergoes urgent closed reduction and subsequent definitive open reduction and internal fixation. Which of the following best describes his risk of developing avascular necrosis (AVN) of the talar body?
Correct Answer & Explanation
. 75-90%
Explanation
Hawkins type III fractures involve dislocation of the subtalar and tibiotalar joints, disrupting the major blood supply to the talus. The risk of AVN is reported to be between 75% and 90%.
Question 3710
Topic: Midfoot & Hindfoot
A 35-year-old male sustains a purely ligamentous Lisfranc injury. Current evidence suggests that when compared to open reduction and internal fixation (ORIF), primary arthrodesis of the first, second, and third tarsometatarsal joints for this specific injury pattern results in:
Correct Answer & Explanation
. Decreased rate of hardware removal and higher functional scores
Explanation
For purely ligamentous Lisfranc injuries, primary arthrodesis has been shown to yield better functional outcomes and a lower rate of planned hardware removal and secondary procedures compared to ORIF.
Question 3711
Topic: Forefoot
A 45-year-old woman complains of painful bunions. Weight-bearing radiographs reveal a hallux valgus angle (HVA) of 38 degrees and an intermetatarsal angle (IMA) of 16 degrees. There is no hypermobility of the first tarsometatarsal joint. What is the most appropriate surgical management?
Correct Answer & Explanation
. Proximal metatarsal osteotomy with distal soft tissue procedure
Explanation
For severe hallux valgus (IMA >13 degrees, HVA >30 degrees), a proximal metatarsal osteotomy combined with a distal soft tissue procedure is indicated to achieve adequate correction. Lapidus is typically reserved for those with TMT hypermobility or first ray arthritis.
Question 3712
Topic: 8. Foot and Ankle
A 55-year-old male presents with dorsal midfoot and first toe pain. Examination reveals a palpable dorsal osteophyte and restricted, painful dorsiflexion of the first metatarsophalangeal (MTP) joint. Radiographs show moderate joint space narrowing with large dorsal osteophytes, but the plantar joint space is preserved. He has failed nonoperative management. What is the most appropriate surgical treatment?
Correct Answer & Explanation
. Cheilectomy
Explanation
Cheilectomy is indicated for Grade 1 and 2 hallux rigidus with preserved plantar cartilage and pain predominantly on dorsiflexion. It involves removal of the dorsal osteophytes and the dorsal third of the metatarsal head.
Question 3713
Topic: Midfoot & Hindfoot
A 50-year-old woman presents with medial ankle pain and a progressively flattening arch. She is able to perform a single-leg heel rise but it is weak and painful. She has a flexible flatfoot deformity. Nonoperative management with a custom orthosis has failed. What is the most appropriate surgical intervention?
Correct Answer & Explanation
. Flexor digitorum longus (FDL) transfer to the navicular and a medializing calcaneal osteotomy
Explanation
The patient has Stage II posterior tibial tendon dysfunction characterized by a flexible deformity and weak single-leg heel rise. Standard surgical treatment includes an FDL transfer combined with a medializing calcaneal osteotomy.
Question 3714
Topic: 8. Foot and Ankle
A 58-year-old diabetic patient presents with a swollen, erythematous, and warm right foot without open ulcerations. Laboratory studies show normal white blood cell count and slightly elevated ESR. Radiographs demonstrate fragmentation and subluxation of the midfoot. What is the most appropriate initial management?
Correct Answer & Explanation
. Total contact casting and non-weight-bearing
Explanation
The patient presents with acute Charcot arthropathy (Eichenholtz stage 1). The mainstay of initial treatment is offloading with a total contact cast to prevent further deformity and allow the inflammatory phase to resolve.
Question 3715
Topic: 8. Foot and Ankle
In the Sanders classification for intra-articular calcaneus fractures, the severity and type are determined primarily by which of the following radiographic or advanced imaging views?
Correct Answer & Explanation
. Coronal CT image through the widest portion of the posterior facet
Explanation
The Sanders classification is based on the number and location of articular fracture lines through the posterior facet of the calcaneus, as seen on coronal CT images.
Question 3716
Topic: 8. Foot and Ankle
Which of the following is true regarding functional bracing (early functional rehabilitation) compared to surgical repair for acute Achilles tendon ruptures?
Correct Answer & Explanation
. Functional bracing has a lower risk of soft-tissue complications and similar re-rupture rates
Explanation
Recent studies demonstrate that when utilizing an early functional rehabilitation protocol, nonoperative management of acute Achilles tendon ruptures yields similar re-rupture rates to surgical repair while avoiding surgical site complications.
Question 3717
Topic: 8. Foot and Ankle
A 42-year-old female presents with severe pain in the forefoot, often described as feeling like she is walking on a pebble. The pain is worst in narrow shoes and relieves when barefoot. Examination reveals a palpable click when the metatarsal heads are squeezed together while applying plantar pressure to the webspace. Which webspace is most commonly affected?
Correct Answer & Explanation
. Third
Explanation
Morton's neuroma most commonly affects the third webspace, followed by the second. The clinical finding described is a positive Mulder's click.
Question 3718
Topic: 8. Foot and Ankle
A 62-year-old woman with end-stage post-traumatic ankle osteoarthritis is considering total ankle arthroplasty (TAA). Which of the following is considered an absolute contraindication to TAA?
Correct Answer & Explanation
. Active deep infection of the ankle joint
Explanation
Active or recent deep infection is an absolute contraindication to total ankle arthroplasty. Relative contraindications include heavy labor, severe uncorrectable deformity, and significant avascular necrosis of the talus.
Question 3719
Topic: 8. Foot and Ankle
A 48-year-old male runner complains of heel pain that is worst with the first few steps in the morning. Examination reveals point tenderness at the medial tuberosity of the calcaneus. Initial management has included rest, NSAIDs, and a prefabricated shoe insert, with minimal improvement after 4 weeks. What is the most appropriate next step in management?
Correct Answer & Explanation
. Achilles and plantar fascia stretching program
Explanation
A structured stretching program targeting the plantar fascia and Achilles tendon has been shown to be highly effective. It is the appropriate next step in conservative management of plantar fasciitis before more invasive options are considered.
Question 3720
Topic: 8. Foot and Ankle
Tarsal tunnel syndrome involves entrapment of the tibial nerve or its branches. The boundaries of the tarsal tunnel include the medial malleolus anteriorly, the calcaneus laterally, and which structure superficially?
Correct Answer & Explanation
. Flexor retinaculum (laciniate ligament)
Explanation
The superficial boundary (roof) of the tarsal tunnel is the flexor retinaculum. Entrapment of the posterior tibial nerve underneath this structure leads to tarsal tunnel syndrome.
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