Spondyloepiphyseal Dysplasia MCQs | Ortho Board Prep

A 5-year-old boy presents with disproportionate short stature, a short trunk, and epiphyseal dysplasia of the femoral head. Genetic testing reveals a mutation in the COL2A1 gene. Which of the following proteins is primarily affected in this condition?

A 10-year-old boy presents with a short neck, broad chest, and disproportionate short stature. Radiographs reveal characteristic vertebral anomalies. His mother is of normal stature and has no clinical symptoms, but her brother has a similar condition. What is the most likely inheritance pattern of this specific disorder?

Based on the lateral spine radiograph of this 17-year-old male patient presenting with short trunk dwarfism, what is the characteristic vertebral deformity shown?

A 6-year-old child with Spondyloepiphyseal Dysplasia Congenita is scheduled for elective lower extremity surgery. Which of the following preoperative evaluations is most critical to prevent a catastrophic neurological complication during anesthesia induction and intubation?

A 28-year-old female with a known history of an inherited chondrodysplasia presents with hip pain and a waddling gait. Review the provided radiograph. Which of the following proximal femoral deformities is most commonly associated with this condition in adulthood?

A family seeks genetic counseling regarding Spondyloepiphyseal Dysplasia Tarda. The father is unaffected, and the mother is a known heterozygous carrier. What is the probability that their daughter will exhibit the clinical and radiographic manifestations of the disease?

A young girl presents with disproportionate short stature. Clinical and radiographic evaluation of her extremities is shown below. Which of the following best describes the findings in the appendicular skeleton of patients with this condition?

A 5-year-old boy diagnosed with Spondyloepiphyseal Dysplasia Congenita is being monitored in the orthopedic clinic. Which of the following spinal deformities is most likely to progress as he ages, requiring close observation?

Review the anteroposterior and lateral thoracolumbar spine radiographs of this patient. The generalized flattening of the vertebral bodies observed is medically termed:

When differentiating Spondyloepiphyseal Dysplasia Congenita (SEDc) from Achondroplasia, which of the following clinical features is most characteristic of SEDc?

A 5-year-old boy presents with disproportionate short stature, a short trunk, and the spinal radiographic findings shown below. Genetic testing is most likely to reveal a mutation affecting which of the following?

A 10-year-old boy presents with a short neck, broad chest, and the characteristic vertebral shape seen in the radiograph below. His mother is clinically and radiographically normal. What is the inheritance pattern of this specific condition?

A patient with congenital spondyloepiphyseal dysplasia is being evaluated prior to general anesthesia for a surgical procedure. Which of the following cervical spine abnormalities is most commonly associated with this condition and requires careful preoperative assessment?

A 28-year-old female with a history of a skeletal dysplasia presents with hip pain. Her pelvic radiograph is shown below. What is the primary deformity seen in the proximal femur that typically develops in this condition?

A 12-year-old male presents with progressive dorsolumbar kyphosis. The lateral radiograph of his thoracolumbar spine is shown below. The characteristic shape of the vertebral bodies in this condition is classically described as:

A young girl with a known chondrodysplasia presents for evaluation. Clinical and radiographic images of her hands and feet are shown below. Which of the following best describes the extremity manifestations typical of this condition?

A family presents for genetic counseling. The father has a history of spondyloepiphyseal dysplasia tarda (SEDt). Which of the following statements regarding the transmission and manifestation of this specific disorder is correct?

A 17-year-old boy with spondyloepiphyseal dysplasia congenita presents with worsening back deformity. Based on the typical progression of this disease and the provided radiograph, what is the most likely spinal deformity?

A 35-year-old male with a history of X-linked recessive spondyloepiphyseal dysplasia tarda presents with worsening joint pain and stiffness in his hips and knees. Which of the following is a known long-term complication associated with this condition?

A 4-year-old child is being evaluated for short stature. Radiographs reveal platyspondyly and epiphyseal dysplasia of the femoral head. The child has a disproportionately short trunk. This presentation is most consistent with spondyloepiphyseal dysplasia congenita. Which of the following features most reliably distinguishes this condition from achondroplasia?

A 5-year-old boy presents with disproportionate short stature, a short trunk, and platyspondyly. Radiographs show epiphyseal dysplasia of the femoral head. Genetic testing is most likely to reveal a mutation in which of the following genes?

A 10-year-old boy presents with disproportionate short stature, a broad chest, and a short neck. Radiographs reveal 'champagne bottle' shaped vertebrae. His parents are unaffected, but his maternal uncle has a similar condition. What is the inheritance pattern of this specific disorder?

A 12-year-old male presents with short stature and back pain. The lateral radiograph of the thoracolumbar spine is shown below. What is the characteristic radiographic sign seen in the vertebral bodies?

A 6-year-old child with known spondyloepiphyseal dysplasia congenita is scheduled for elective lower extremity surgery. Which of the following preoperative evaluations is most critical to prevent a catastrophic neurological complication?

A 28-year-old female with a history of spondyloepiphyseal dysplasia presents with hip pain and a waddling gait. Her pelvic radiograph is shown below. Which of the following proximal femoral deformities is most commonly associated with this condition in adulthood?

Which of the following clinical features best distinguishes spondyloepiphyseal dysplasia from achondroplasia?

A young female patient presents with the clinical and radiographic findings of the hands and feet shown below. In the context of spondyloepiphyseal dysplasia, what is the primary underlying defect causing these skeletal manifestations?

A couple seeks genetic counseling. The father has spondyloepiphyseal dysplasia tarda, and the mother is unaffected and is not a carrier. What is the probability that their sons will be affected by the disease?

A 5-year-old boy presents with the progressive spinal deformity shown in the radiograph below. Which of the following terms best describes the generalized flattening of the vertebral bodies seen in this condition?

Spondyloepiphyseal dysplasia congenita is primarily caused by a defect in which of the following structural components of cartilage?

A 5-year-old boy presents with disproportionate short stature, a short trunk, and progressive dorsolumbar kyphosis. Radiographs reveal platyspondyly and epiphyseal dysplasia of the femoral head. Genetic testing is most likely to reveal a mutation in which of the following genes?

A 10-year-old boy presents with progressive arthropathy, a short neck, and a broad chest. Radiographs show characteristic vertebral anomalies. His mother is clinically and radiographically normal, but his maternal uncle has a similar condition. What is the inheritance pattern of this disorder?

A 17-year-old male presents with a short trunk and progressive back deformity. The lateral radiograph of his spine is shown below. What is the characteristic radiographic finding seen in the vertebral bodies of this condition?

A 28-year-old female with a known history of an inherited chondrodysplasia presents with hip pain and a waddling gait. Her pelvic radiograph is shown below. Which of the following deformities is most commonly associated with the delayed ossification of the proximal femur seen in this condition?

Patients with congenital spondyloepiphyseal dysplasia (SEDC) are at high risk for a specific cervical spine anomaly that requires careful preoperative evaluation before any surgery requiring intubation. Which of the following is the most common cervical spine manifestation in these patients?

Which of the following statements accurately describes the epidemiology and clinical manifestation of Spondyloepiphyseal Dysplasia Tarda (SEDT)?

A young girl with disproportionate short stature presents for evaluation. Clinical and radiographic images of her hands and feet are shown below. Which of the following best describes the findings in the appendicular skeleton of patients with this condition?

Congenital spondyloepiphyseal dysplasia is caused by a mutation in the COL2A1 gene. This mutation primarily affects the synthesis of which of the following structural proteins?

A patient with a known osteochondrodysplasia presents with back pain. Anteroposterior and lateral radiographs of the thoracolumbar spine are shown below. Which of the following terms best describes the generalized flattening of the vertebral bodies seen in this imaging?

A key differentiating factor between Spondyloepiphyseal Dysplasia Congenita (SEDC) and Spondyloepiphyseal Dysplasia Tarda (SEDT) is their genetic inheritance and onset. Which of the following is true regarding SEDT?

A 4-year-old child presents with disproportionate short stature, a short trunk, and epiphyseal dysplasia of the femoral heads. Genetic testing reveals a mutation in the COL2A1 gene. Which of the following proteins is primarily affected in this condition?

Review the lateral radiograph of the thoracolumbar spine of a 17-year-old boy presenting with progressive dorsolumbar kyphosis.

Based on the characteristic vertebral morphology shown, what is the most likely diagnosis?

A 10-year-old boy presents with a short neck, broad chest, and disproportionate short stature. Radiographs reveal 'champagne bottle' shaped vertebrae. His mother is clinically and radiographically normal, but his maternal uncle has a similar condition. What is the inheritance pattern of this specific disorder?

Patients with Spondyloepiphyseal Dysplasia Congenita are at high risk for a specific cervical spine anomaly that requires careful preoperative evaluation before any general anesthesia. Which of the following is the most common cervical spine manifestation in these patients?

A 28-year-old female with a known skeletal dysplasia presents with hip pain. Her pelvic radiograph is shown below.

Which of the following best describes the characteristic proximal femoral deformity seen in this condition during adulthood?

Which of the following clinical profiles is most characteristic of Spondyloepiphyseal Dysplasia Tarda?

A young female patient with a short trunk and short stature presents for evaluation. Clinical and radiographic images of her hands and feet are provided.

What is the predominant finding in the appendicular skeleton shown in these images?

In Spondyloepiphyseal Dysplasia Tarda, the vertebral bodies develop a pathognomonic radiographic appearance due to defective growth. Which of the following terms best describes this characteristic vertebral shape?

Anteroposterior and lateral thoracolumbar spine radiographs of a patient with a genetic skeletal dysplasia are shown.

In addition to the characteristic vertebral body shape, what other spinal radiographic feature is prominently demonstrated?

A 35-year-old male with a history of X-linked recessive Spondyloepiphyseal Dysplasia Tarda presents to the orthopedic clinic. Which of the following long-term musculoskeletal complications is most strongly associated with this condition as the patient ages?

A 4-year-old child with spondyloepiphyseal dysplasia congenita (SEDC) is scheduled for a valgus osteotomy for coxa vara. Prior to intubation, what is the most critical screening study required?

Spondyloepiphyseal dysplasia congenita (SEDC) is associated with mutations in the COL2A1 gene. Which of the following tissues is primarily affected by this genetic defect?

A 14-year-old male presents with worsening hip pain and early-onset hip osteoarthritis. He has short stature with a disproportionately short trunk. Radiographs reveal a "heaped up" appearance of the posterior portion of the vertebral endplates. What is the most likely diagnosis?

A patient with spondyloepiphyseal dysplasia congenita is noted to have severe, progressive coxa vara. If surgical intervention is planned, what is the primary goal of the recommended procedure?

Spondyloepiphyseal dysplasia (SED) can present similarly to Morquio syndrome. Which of the following clinical features most reliably distinguishes SED congenita from Morquio syndrome?

A biopsy of the epiphyseal cartilage from a patient with spondyloepiphyseal dysplasia congenita (SEDC) is examined histologically. Which of the following findings is most characteristic of this disorder?

Spondyloepiphyseal dysplasia tarda is typically inherited in which of the following patterns?

Which of the following non-orthopedic specialists is most essential in the routine multidisciplinary surveillance of a child with spondyloepiphyseal dysplasia congenita (SEDC)?

A 25-year-old male with spondyloepiphyseal dysplasia tarda presents for evaluation of progressive back pain. Lateral radiographs of the thoracolumbar spine are likely to demonstrate:

A child with a known diagnosis of spondyloepiphyseal dysplasia congenita develops upper motor neuron signs, including hyperreflexia and a positive Babinski sign. What is the most appropriate next step in management?

You are evaluating a newborn with a disproportionately short trunk, flat face, and cleft palate. Radiographs show absent ossification centers for the pubic bones, distal femoral epiphyses, and proximal tibial epiphyses. What is the most likely diagnosis?

A 12-year-old boy presents with progressive hip pain. Radiographs show flattened femoral heads and early degenerative changes, but his spine radiographs are entirely normal. Which of the following is the most likely diagnosis?

In addition to the spine and large joints, which of the following appendicular skeletal deformities is frequently observed at birth in patients with spondyloepiphyseal dysplasia congenita?

What distinguishes the clinical presentation of Pseudoachondroplasia from Spondyloepiphyseal Dysplasia (SED)?

What is the genetic mutation associated with Spondyloepiphyseal Dysplasia (SED) tarda?

A 7-year-old child with spondyloepiphyseal dysplasia congenita presents with a waddling gait. Radiographs demonstrate an abnormal neck-shaft angle of 90 degrees with a vertical physeal orientation. Which complication is most likely if this is left untreated?

A patient with spondyloepiphyseal dysplasia congenita requires an atlantoaxial fusion due to symptomatic instability. Which of the following factors makes cervical spine surgery particularly challenging in this population?

Spondyloepiphyseal dysplasia congenita is characterized by a defect in Type II collagen. Which of the following conditions shares the same underlying defective protein?

A 6-year-old girl with SEDC is evaluated for progressive spinal deformity. Which spinal deformity is most classically associated with the natural history of this condition?

Which of the following best describes the classical radiographic appearance of the pelvis and hips in an infant with Spondyloepiphyseal Dysplasia Congenita (SEDC)?

A 3-year-old child presents with disproportionate short trunk dwarfism, a cleft palate, and a waddling gait. Radiographs reveal coxa vara and delayed ossification of the femoral heads. Genetic testing confirms a mutation in the COL2A1 gene. Which type of collagen is primarily defective in this patient?

A 12-year-old male with a short trunk and barrel chest is diagnosed with Spondyloepiphyseal Dysplasia Tarda (SEDT). He has normal vision and intelligence. Which of the following best describes the inheritance pattern of the most common form of this specific condition?

A 5-year-old girl with Spondyloepiphyseal Dysplasia Congenita is scheduled to undergo strabismus surgery under general anesthesia. Which of the following pre-operative orthopedic evaluations is absolutely mandatory?

You are examining a newborn diagnosed with Spondyloepiphyseal Dysplasia Congenita. In addition to monitoring the skeletal system and cervical spine, what other specialized screening must be routinely performed throughout this patient's childhood?

Which of the following genes is responsible for X-linked Spondyloepiphyseal Dysplasia Tarda?

A 4-year-old child presents with short trunk dwarfism and a waddling gait. Radiographs show universal platyspondyly. The patient has a cleft palate and clear corneas on eye examination. Unlike Morquio syndrome, which can present similarly, this patient's condition is primarily caused by a mutation in:

A 6-year-old boy with Spondyloepiphyseal Dysplasia Congenita is noted to have a progressively worsening waddling gait. Pelvic radiographs reveal bilateral coxa vara with a Hilgenreiner-epiphyseal angle (HEA) of 65 degrees. What is the most appropriate management?

Which of the following histologic findings is classically characteristic of the chondrocytes in a patient with Spondyloepiphyseal Dysplasia Congenita?

A newborn presents with short trunk disproportionate dwarfism. Radiographic evaluation reveals marked delay in ossification of several centers. Which of the following ossification centers is characteristically delayed or completely absent at birth in Spondyloepiphyseal Dysplasia Congenita?

In a 14-year-old male with Spondyloepiphyseal Dysplasia Tarda, what is the most characteristic pathognomonic finding on a lateral radiograph of the lumbar spine?

Review the clinical image.

A 2-year-old child presents with delayed walking and short stature. The pelvic radiograph reveals coxa vara and distinctly absent ossification of the femoral heads and severely delayed ossification of the pubic symphysis. What is the most likely diagnosis?

An adult male with a known history of Spondyloepiphyseal Dysplasia Tarda presents to the orthopedic clinic with progressively worsening, debilitating groin pain. Given the natural history of this disease, which surgical procedure is he most likely to require in his 30s or 40s?

The mutation in Spondyloepiphyseal Dysplasia Congenita impairs the normal structural integrity of hyaline cartilage. Which of the following intervertebral disc components is also primarily composed of this defective protein?

A 7-year-old girl with Spondyloepiphyseal Dysplasia Congenita is noted to have progressive coxa vara. Radiographs show a neck-shaft angle of 85 degrees. What is the primary biomechanical rationale for performing a subtrochanteric valgus osteotomy in this patient?

Morquio syndrome and Spondyloepiphyseal Dysplasia Congenita both present with short trunk dwarfism and atlantoaxial instability. Which of the following clinical features reliably distinguishes Morquio syndrome from SED Congenita on physical examination?

Which of the following represents the most immediately life-threatening complication of Spondyloepiphyseal Dysplasia Congenita in early childhood?

What spinal deformity is most frequently associated with Spondyloepiphyseal Dysplasia Congenita and typically progresses during childhood, often requiring surgical fusion?

Based on the lateral spine radiograph showing characteristic heaped-up bone on the posterior vertebral endplates, a 14-year-old boy is diagnosed with SED Tarda.

What is the inheritance pattern for the most common form of this disease?

While performing a physical examination on a newborn later diagnosed with Spondyloepiphyseal Dysplasia Congenita, you note a bilateral structural foot deformity. What is the most common foot anomaly associated with this skeletal dysplasia?

A pregnant woman with a known family history of X-linked Spondyloepiphyseal Dysplasia Tarda undergoes genetic counseling. Genetic testing confirms she is a carrier of the TRAPPC2 mutation. Her husband is unaffected. What is the probability that their son will be affected by the condition?

A 13-year-old male presents with bilateral hip pain and stiffness. Examination reveals a short trunk with normal limb proportions. Radiographs demonstrate premature osteoarthritis of the hips and characteristic humped vertebral endplates in the lumbar spine. His maternal uncle required bilateral total hip arthroplasties at age 35. A mutation in which of the following genes is most likely responsible?

A 5-year-old child with spondyloepiphyseal dysplasia congenita (SEDC) is scheduled to undergo a proximal femoral valgus osteotomy for severe coxa vara. Which of the following preoperative evaluations is absolutely critical before proceeding with general anesthesia?

A newborn is evaluated for severe disproportionate short stature. Radiographic survey reveals absent ossification of the pubic bones, calcaneus, talus, and distal femoral epiphyses. Which of the following histological findings is most characteristic of the cartilage in this patient's underlying condition?

Which of the following clinical features most reliably differentiates Spondyloepiphyseal Dysplasia Congenita (SEDC) from Morquio syndrome (Mucopolysaccharidosis Type IV) in a 6-year-old patient with short-trunk dwarfism and atlantoaxial instability?

A 4-year-old boy with a known COL2A1 mutation is being evaluated in the orthopedic clinic for a waddling gait.

Based on the typical natural history of his skeletal dysplasia, which of the following hip deformities is most likely present?

Because of the widespread distribution of the defective protein in Spondyloepiphyseal Dysplasia Congenita, patients are at high risk for extraskeletal complications. Routine screening by which of the following specialists is most imperative?

A 10-year-old girl with Spondyloepiphyseal Dysplasia Congenita presents with increasing lower extremity weakness, hyperreflexia, and a positive Babinski sign. Cervical radiographs reveal an atlantodens interval (ADI) of 8 mm. What is the primary pathoanatomic etiology of her cervical instability?

A newborn presents with a short trunk, cleft palate, and a barrel chest. Radiographs show flattened vertebral bodies (platyspondyly) and the absence of ossification in the knees and feet. The parents are of normal height and have no significant medical history. Which type of collagen is quantitatively or qualitatively abnormal in this infant?

In a patient with Spondyloepiphyseal Dysplasia Tarda (SEDT), which of the following radiographic spinal abnormalities is considered the hallmark pathognomonic finding?

A 28-year-old male with an established diagnosis of Spondyloepiphyseal Dysplasia Tarda (SEDT) presents with severe, debilitating groin pain bilaterally. Conservative management has failed.

Based on the natural history of this disorder, which of the following surgical interventions is he most likely to require?