Pediatric Orthopaedic Scored And Re Review | Dr Hutaif - ...

A 13-year-old obese male presents to the emergency department unable to bear weight on his right leg after a minor slip. Radiographs reveal a severe slipped capital femoral epiphysis (SCFE). According to the Loder classification, this is an unstable SCFE. Which of the following best defines the primary clinical significance of an unstable SCFE?

During the initiation of the Ponseti method for a rigid idiopathic clubfoot in a 2-week-old infant, the first manipulative step prior to applying the first long-leg cast is designed to correct the cavus deformity. Which of the following maneuvers is correct to achieve this?

A 4-year-old child, previously successfully treated for an idiopathic clubfoot with the Ponseti method, presents with a recurring deformity. Gait analysis reveals dynamic supination of the foot during the swing phase, with the child walking on the lateral border of the foot. The foot is completely flexible passively. What is the most appropriate surgical management?

A 10-week-old female infant with a completely dislocated, reducible developmental dysplasia of the hip (DDH) has been treated with a Pavlik harness for 2 weeks. The mother notes the child is no longer actively kicking her left leg, specifically lacking active knee extension. What is the most appropriate next step in management?

A 6-year-old boy sustains a severe extension-type III supracondylar humerus fracture. After closed reduction and percutaneous pinning, the hand is pink with a palpable radial pulse, but the child is unable to flex the interphalangeal joint of the thumb and the distal interphalangeal joint of the index finger. Which specific nerve structure has been injured?

A 5-year-old child sustains a lateral condyle fracture of the humerus with 3 mm of displacement. Anatomic reduction and internal fixation are indicated primarily to prevent which of the following long-term complications?

According to the Gross Motor Function Classification System (GMFCS), a patient with cerebral palsy is classified as Level V. At what approximate frequency should routine radiographic hip surveillance be conducted for this patient after the age of 2 years to monitor for hip displacement?

An 8-year-old boy is diagnosed with Legg-Calvé-Perthes disease. Radiographs demonstrate fragmentation of the femoral head with more than 50% loss of height of the lateral pillar. According to the Herring classification, what is the assigned group and expected prognosis without intervention?

A 20-month-old toddler presents with severe bilateral genu varum. Standing AP radiographs of the lower extremities reveal medial metaphyseal beaking of the proximal tibia. Measurement of the metaphyseal-diaphyseal angle (MDA) is 18 degrees on both sides. What is the most likely diagnosis?

A 14-year-old adolescent sustains a triplane fracture of the distal tibia following an external rotation injury. By definition, a classic triplane fracture involves a combination of fracture planes. Which Salter-Harris classification does this complex fracture pattern biologically represent?

A 13-year-old girl sustains an isolated avulsion fracture of the anterolateral distal tibial epiphysis. The injury was caused by an external rotation force. Which ligament is directly responsible for pulling off this epiphyseal fragment?

A 13-year-old boy presents with vague, deep midfoot pain and frequent ankle sprains. Examination shows a rigid, flat foot with lack of subtalar motion and peroneal spasticity. Lateral radiographs of the foot reveal a continuous bony bridge forming a 'C-sign' encompassing the medial talar dome and sustentaculum tali. What is the diagnosis?

An 8-year-old child weighing 40 kg sustains a closed, highly comminuted midshaft femur fracture (length unstable) following a motor vehicle collision. Which of the following surgical interventions is considered the gold standard for this specific patient profile?

A 2-year-old boy presents with short stature, frontal bossing, and rhizomelic shortening of the limbs. Radiographs of the spine show progressive narrowing of the interpedicular distances from the upper to the lower lumbar spine. What genetic mutation is responsible for this condition?

A newborn is diagnosed with congenital scoliosis secondary to a fully segmented hemivertebra in the thoracic spine. Because congenital scoliosis occurs due to abnormal somite development during embryogenesis, screening for associated anomalies is mandatory. Which of the following sets of screening tests is most appropriate?

A 14-year-old female gymnast complains of insidious onset, mechanical low back pain that worsens with back extension. Radiographs of the lumbar spine show a defect in the pars interarticularis of L5. The classic 'Scotty dog with a collar' sign is best appreciated on which specific radiographic projection?

A 15-year-old male presents with chronic knee pain and mechanical symptoms. An MRI reveals an osteochondritis dissecans (OCD) lesion with fluid surrounding the fragment, indicating instability. What is the most common anatomic location for a pediatric knee OCD lesion?

A 7-year-old boy presents to the emergency department with arm pain after throwing a baseball. Radiographs demonstrate a mildly expansile, centrally located radiolucent lesion in the proximal humeral diaphysis with a pathologic fracture. A bone fragment is seen resting at the dependent portion of the cystic cavity. What is the most appropriate initial management?

A 4-month-old infant with a history of shoulder dystocia at birth has an unresolved Erb-Duchenne palsy (C5-C6). The arm is held in internal rotation, adduction, and pronation. According to current pediatric orthopedic guidelines, lack of clinically detectable recovery of which specific muscle by age 3 to 6 months is the primary indication for primary nerve microsurgery?

A 10-year-old boy presents with progressive thigh pain, night pain, and a low-grade fever. Radiographs show a permeative, lytic lesion in the diaphysis of the femur with a multilamellated 'onion-skin' periosteal reaction. Histology reveals sheets of small round blue cells. Which chromosomal translocation is most definitively diagnostic of this specific tumor?

A 2-week-old infant presents with severe, rigid congenital talipes equinovarus (clubfoot). The treating orthopedic surgeon initiates the Ponseti casting technique. After initial correction of the cavus deformity by elevating the first ray, the subsequent casts aim to correct the forefoot adduction and heel varus. Where should the examiner apply counterpressure (the fulcrum) during the manipulation phase?

A 12-year-old boy presents with left-sided groin pain and an obligatory external rotation of the hip during active flexion. Radiographs confirm a left-sided Slipped Capital Femoral Epiphysis (SCFE). Which of the following patient factors represents the strongest indication for prophylactic in situ pinning of the contralateral, asymptomatic right hip?

An 8.5-year-old boy is diagnosed with Legg-Calvé-Perthes disease. AP and frog-leg lateral pelvic radiographs demonstrate exactly 50% maintenance of the lateral pillar height on the affected side. According to the prospective multicenter Herring study, what is the most appropriate management for this patient to optimize the long-term sphericity of the femoral head?

A 3-month-old female is being treated with a Pavlik harness for developmental dysplasia of the left hip. Two weeks after the initiation of treatment, the mother notes that the infant has stopped kicking her left leg. On examination, the left knee is held in a resting extended position, and the infant does not actively flex the hip or extend the knee. What is the most likely etiology of this complication?

A 5-year-old boy sustains a severe, displaced extension-type supracondylar humerus fracture. On initial presentation, his radial pulse is non-palpable, but the hand is warm, pink, and has a capillary refill of less than 2 seconds. Closed reduction and percutaneous pinning are performed expeditiously. Postoperatively, the fracture is anatomically reduced, but the radial pulse remains absent. The hand remains warm and pink with brisk capillary refill. What is the most appropriate next step in management?

A 13-year-old girl sustains an external rotation twisting injury to her ankle. Radiographs reveal a Salter-Harris type III fracture of the anterolateral aspect of the distal tibial epiphysis. Avulsion of this fragment is caused by tension from which of the following ligamentous structures?

A newborn is evaluated for a visible truncal asymmetry. Radiographs demonstrate a fully segmented hemivertebra at the T8 level resulting in congenital scoliosis. Given the high rate of associated anomalies in patients with congenital scoliosis, what are the mandatory screening modalities required for this infant?

A 6-year-old child with spastic diplegic cerebral palsy is evaluated during a routine surveillance visit. An AP pelvis radiograph demonstrates a Reimers Migration Percentage of 45% bilaterally. The acetabular index is 32 degrees. The hips are clinically subluxated but reducible. What is the most definitive surgical management to provide stable, long-term hip containment?

An 11-year-old boy presents with frequent ankle sprains and a rigid, painful flatfoot. On physical examination, there is marked spasm of the peroneal muscles. A lateral radiograph demonstrates a continuous C-shaped bony arc formed by the medial outline of the talar dome and the posteroinferior aspect of the sustentaculum tali. This radiographic sign is highly specific for which of the following conditions?

A 6-year-old child presents with a painful, loud snapping sound in the lateral compartment of the knee during extension. MRI demonstrates a thickened, discoid lateral meniscus that has pulled into the intercondylar notch. Arthroscopic evaluation reveals the meniscus is hypermobile. Which specific anatomical feature defines the 'Wrisberg variant' of a discoid meniscus?

A 4-year-old child with Osteogenesis Imperfecta Type III is treated with cyclical intravenous pamidronate therapy to decrease fracture frequency. Which of the following radiographic findings on a long-bone radiograph provides objective evidence of the patient's compliance with this specific pharmacological therapy?

A 4-year-old obese male presents with severe, progressive bilateral infantile tibia vara. Radiographs reveal a sharp step-off and depression of the medial tibial metaphysis. According to the Langenskiöld classification, this child is classified as having Stage III disease. What is the most appropriate definitive management?

A 10-month-old, non-ambulatory infant is brought to the emergency department for irritability. Radiographs reveal an isolated, displaced spiral fracture of the left femoral shaft. The parents state the infant fell off a low sofa onto a carpeted floor. What is the most critical next step in the clinical management of this patient?

A 35-year-old male presents with progressive intrinsic muscle weakness in his right hand and numbness involving the ring and small fingers. He recalls sustaining an elbow injury at age 5 that was treated non-operatively in a cast. Physical examination reveals a prominent cubitus valgus deformity of the right elbow. What was the most likely pediatric elbow injury this patient sustained?

A 3-year-old child presents with an anterolateral bow of the right tibia and a distinct mid-diaphyseal pseudarthrosis. Examination reveals multiple café-au-lait macules on the trunk. This underlying genetic syndrome is caused by a mutation in a gene that encodes a protein responsible for downregulating which of the following cellular signaling pathways?

A 6-year-old boy falls on an outstretched hand and presents with severe forearm pain. Radiographs demonstrate an isolated transverse fracture of the proximal ulnar diaphysis with apex-anterior angulation. The radiocapitellar line does not bisect the capitellum on any view. According to the Bado classification, what is the specific associated injury in this type of Monteggia fracture?

A 14-year-old elite adolescent baseball pitcher presents with vague, insidious shoulder pain that is maximal during the late cocking and early acceleration phases of throwing. An AP radiograph of the shoulder with the arm in external rotation reveals widening of the proximal humeral physis with adjacent metaphyseal sclerosis. What is the most appropriate initial management?

A 15-year-old competitive female gymnast presents with insidious onset of localized low back pain that is strictly exacerbated by lumbar extension. Neurologic exam is normal. Plain radiographs, including oblique views, are completely negative for any abnormality. An MRI of the lumbar spine reveals marked marrow edema localized to the pars interarticularis of L5 bilaterally, without a visible fracture line. What is the most appropriate management?

A newborn infant presents with a congenital lower extremity deformity characterized by marked shortening of the right leg, a dimple over the anterior tibia, equinovalgus foot deformity, and the absence of the lateral two digits of the right foot. Radiographs confirm the complete absence of the fibula. Which of the following knee anomalies is almost universally present in this condition?

A 3-year-old child presents with massive, asymmetric overgrowth of the index and middle fingers of the right hand. The affected digits are enlarged in both length and girth, and are becoming progressively stiff and deviated. A biopsy of the subcutaneous tissue shows massive fibrofatty infiltration of the digital nerves. This condition, known as macrodactyly or macrodystrophia lipomatosa, is driven by a somatic mosaic mutation in which of the following genes?

A 12-year-old boy presents with a history of recurrent ankle sprains and a rigid flatfoot. Clinical examination demonstrates peroneal spasticity. Radiographs demonstrate an 'anteater nose' sign. Which of the following radiographic views is most appropriate to best visualize the pathology in question?

A 14-year-old girl presents with progressive wrist pain, decreased extension, and a prominent ulnar head. Radiographs reveal palmar and ulnar tilt of the distal radial articular surface with relative overgrowth of the ulna. The primary tethering structure responsible for this specific deformity is the:

A 4-year-old child with Neurofibromatosis Type 1 (NF1) presents with congenital pseudarthrosis of the tibia (Crawford Type IV). The patient is scheduled for surgical reconstruction with an intramedullary rod and a vascularized fibular graft. Achieving bony union relies critically on the complete radical resection of which of the following abnormal tissues at the pseudarthrosis site?

A 5-year-old boy presents with progressive bilateral genu varum, short stature, and a waddling gait. Genetic testing confirms X-linked hypophosphatemic rickets (mutation in the PHEX gene). Which of the following serum laboratory profiles is most characteristic of this condition prior to medical treatment?

In a 6-year-old child diagnosed with spastic diplegic cerebral palsy, which of the following factors serves as the strongest independent predictor for the development of lateral hip displacement (subluxation)?

A 6-year-old boy with Mucopolysaccharidosis Type IV (Morquio syndrome) is scheduled for elective lower extremity realignment surgery. Before clearance for general anesthesia is given, which of the following specific orthopedic screening evaluations is absolutely mandatory?

A newborn is diagnosed with Proximal Focal Femoral Deficiency (PFFD). Upon further physical examination and imaging of the affected extremity, which of the following concurrent musculoskeletal anomalies is almost universally present?

A 2-month-old infant is evaluated for bilateral rigid rocker-bottom feet. To reliably differentiate Congenital Vertical Talus (CVT) from an oblique talus, which of the following imaging modalities or specific views is most diagnostic?

A newborn presents with short limbs, severe rigid clubfeet, 'hitchhiker' thumbs, and cystic swelling of the ear pinnae (cauliflower ears). This skeletal dysplasia is caused by a genetic mutation affecting which of the following?

Congenital pseudarthrosis of the clavicle occurs almost exclusively on the right side. If a newborn presents with isolated congenital pseudarthrosis of the LEFT clavicle, what is the most important clinical entity to rule out?

A 3-month-old presents with severe, atypical (complex) clubfoot characterized by a short, chubby foot, a deep transverse plantar crease, and severe equinus. Treatment via the modified Ponseti method should strictly emphasize which of the following?

A 2.5-year-old child presents with bilateral progressive tibia vara. Radiographs reveal fragmentation of the medial tibial metaphysis with a metaphyseal-diaphyseal angle (Drennan's angle) of 18 degrees. What is the most appropriate next step in management?

A 14-year-old male sustains an isolated Salter-Harris III fracture of the anterolateral distal tibia. Which of the following is the predominant mechanism of injury for this specific fracture pattern?

A 4-year-old girl is evaluated for congenital gigantism isolated to the middle and index fingers of her right hand. Biopsy of the overgrown tissues shows prominent fibrofatty infiltration surrounding the median nerve. Which gene mutation is most likely responsible for this condition?

A 3-year-old sustains a minor fall. Cervical spine radiographs demonstrate anterior displacement of C2 on C3 of 3.5 mm. Swischuk's line is drawn to differentiate physiologic pseudosubluxation from true traumatic injury. Which of the following defines a true pathologic subluxation utilizing this line?

A 12-year-old overweight boy presents with sudden severe left hip pain and is completely unable to bear weight, even with crutches (Loder unstable SCFE). The exceptionally high risk of avascular necrosis (AVN) in this condition is primarily due to disruption of which of the following vessels?

A 14-year-old with spastic diplegic cerebral palsy presents with worsening 'crouch gait'. Kinematic analysis shows excessive knee flexion throughout the stance phase. Which of the following prior surgical interventions most commonly precipitates or significantly worsens an iatrogenic crouch gait?

A 13-year-old elite baseball pitcher presents with insidious onset shoulder pain that occurs primarily during the late cocking and early acceleration phases of throwing. Radiographs show widening and sclerosis of the proximal humeral physis. What is the primary pathophysiology of this specific condition?

A 6-year-old boy presents with bilateral hearing loss, mild midface hypoplasia, and rigid flatfeet. Radiographs reveal bilateral calcaneocuboid and carpal coalitions. Genetic testing reveals a Pro250Arg mutation in the FGFR3 gene. What is the most likely diagnosis?

Which of the following intramedullary implants is widely considered the modern gold standard for long bone stabilization in a growing child with severe osteogenesis imperfecta, as it accommodates longitudinal growth while minimizing the need for repetitive surgeries?