ABOS Part I Comprehensive Review - Batch 7

Question 1

A 32-year-old male sustains a Gustilo-Anderson Type II open both bones forearm fracture after a motor vehicle accident. Initial assessment reveals a 3 cm laceration over the mid-ulna, minimal contamination, and intact neurovascular status. After init

Accepted Answer

Immediate open reduction and internal fixation (ORIF) with dual plates and screws.

Question 2

A 40-year-old male undergoes open reduction and internal fixation (ORIF) of a mid-diaphyseal radial fracture using a 3.5mm dynamic compression plate (DCP) via the Henry approach. To achieve optimal stability and promote primary bone healing, which bi

Accepted Answer

Direct axial compression across the fracture site.

Question 3

During a surgical approach to the proximal ulna for a diaphyseal fracture, a surgeon utilizes the posterior (dorsal) subcutaneous approach. Which of the following structures is the most significant concern for iatrogenic injury with this specific app

Accepted Answer

No major neurovascular structures are at significant risk with this approach.

Question 4

A 6-year-old child presents with a completely displaced, unstable mid-diaphyseal both bones forearm fracture after a fall from a swing. Initial attempts at closed reduction under conscious sedation in the emergency department were unsuccessful. What

Accepted Answer

Flexible intramedullary nailing (FIN) of both radius and ulna.

Question 5

A 28-year-old male undergoes ORIF of a closed mid-diaphyseal both bones forearm fracture. Six hours post-operatively, he complains of severe, unrelenting pain in his forearm, disproportionate to the expected post-operative discomfort. He reports numb

Accepted Answer

Measure forearm compartment pressures urgently.

Question 6

A 55-year-old male develops a painful loss of forearm pronation and supination 6 months after open reduction and internal fixation of a both bones forearm fracture. Radiographs show abnormal bone formation bridging the radius and ulna in the mid-diap

Accepted Answer

Heterotopic ossification leading to synostosis; high-energy trauma and extensive soft tissue injury.

Question 7

A 30-year-old male presents with a 15-degree rotational malunion of the radius after non-operative management of a mid-diaphyseal forearm fracture. Clinically, he has a significant loss of pronation and supination. What is the most accurate method to

Accepted Answer

CT scan with 3D reconstruction and specific rotational measurements.

Question 8

A 45-year-old male presents with a painful, hypertrophic non-union of the mid-shaft ulna 9 months after open reduction and internal fixation with a plate and screws. He has persistent pain with activity and localized tenderness. Radiographs show a pe

Accepted Answer

Revision open reduction, rigid internal fixation with a new plate and screws, and bone grafting.

Question 9

A 22-year-old active male undergoes hardware removal (plates and screws) 18 months after successful ORIF of a both bones forearm fracture. To minimize the risk of refracture through previous screw holes, what is the most important post-operative inst

Accepted Answer

Avoid strenuous activity and heavy lifting for 6-12 weeks.

Question 10

A 10-year-old child presents with a mid-diaphyseal both bones forearm fracture. The fracture pattern is a complete transverse fracture of the ulna and a greenstick fracture of the radius with 15 degrees of volar angulation. Which of the following sta

Accepted Answer

Volar angulation has superior remodeling potential compared to dorsal angulation.

Orthopaedic Surgery Board Exam Review: ABOS Part I & AAOS OITE Prep Questions | Part 22210

ABOS Part I Orthopedic Surgery Review: Forearm, Wrist & Galeazzi Fracture Management | Part 22200

Key Takeaway