A 33-year-old male presents with intermittent painful locking of his right elbow. Radiographs show a single loose body in the anterior aspect of the joint with well-maintained joint space. He reports a history of unexplained painful elbow for 18 mont

Osteochondritis dissecans (OCD) with loose body formation

The examiner asks the candidate to differentiate between Osteochondritis Dissecans (OCD) and osteoarthritis as the cause of the loose body. Which of the following findings from the case most strongly supports OCD over osteoarthritis?

The history of unexplained painful elbow at age 17.

The 33-year-old patient's current symptom of intermittent painful locking is directly caused by the loose body. What is the most appropriate definitive treatment for this patient's current symptoms and to prevent future locking episodes?

Arthroscopic removal of the loose body

The examiner asks the candidate about the name for OCD of the elbow. The candidate correctly identifies Panner's disease. Which of the following statements best describes Panner's disease?

It is an avascular necrosis of the capitellar epiphysis in children.

The candidate notes that the radiographs show 'well-maintained joint space' and 'no calcification in the muscle or capsule.' What specific diagnoses are primarily ruled out or made less likely by these observations?

Advanced osteoarthritis and myositis ossificans

The patient's current symptoms of intermittent painful locking are a direct consequence of the loose body. What is the primary mechanism by which an intra-articular loose body causes locking in a joint?

Mechanical impingement between joint surfaces

The patient's initial presentation at age 17 with unexplained painful elbow was unfortunately discharged from follow-up after a single X-ray showed no obvious pathology. What is the most likely long-term consequence of untreated osteochondritis disse

Formation and detachment of an osteochondral fragment into a loose body

The examiner asks about other causes for one or two loose bodies in a joint, and the candidate mentions osteoarthritis. The examiner then asks about multiple loose bodies. What is the most common diagnosis when multiple loose bodies are observed in a

Primary synovial chondromatosis

Considering the examiner's feedback on Candidate 2's performance, which aspect of Candidate 2's approach was most crucial for arriving at a spot-on diagnosis and appropriate management plan?

Connecting the current findings with the detailed past medical history.

ABOS Part I & OITE Review: Elbow OCD, Lateral Epicondylitis, and Loose Bodies | Part 22214

15 Apr 2026 1 min read 2 Views

Key Takeaway

This comprehensive review for ABOS Part I and AAOS OITE exams focuses on key elbow pathologies. It covers the diagnosis, management, and differential diagnoses of Osteochondritis Dissecans (OCD) and intra-articular loose bodies, as well as lateral epicondylitis (tennis elbow) and radial tunnel syndrome. Essential for orthopedic residents and surgeons preparing for board certification.

ABOS Part I Comprehensive Review - Batch 100

This module contains 20 advanced orthopedic multiple-choice questions developed to mirror the American Board of Orthopaedic Surgery (ABOS) Part I and AAOS OITE examinations. Questions are derived directly from high-yield clinical teaching cases.

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

ABOS Part I & OITE Review: Elbow OCD, Lateral Epicondylitis, and Loose Bodies | Part 22214

Key Takeaway

ABOS Part I Comprehensive Review - Batch 100

Module Results

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ABOS Part I Orthopaedic Review: Periprosthetic, Subtrochanteric, Pilon Fractures & Management | Part 22203

ABOS Part I & OITE Orthopaedic Review: HPII, Hand & Pediatric Fractures | Part 22216

Chapter Index

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

ABOS Part I & OITE Review: Elbow OCD, Lateral Epicondylitis, and Loose Bodies | Part 22214

Key Takeaway

ABOS Part I Comprehensive Review - Batch 100

⚠️ Unanswered Questions

Module Results

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ABOS Part I Orthopaedic Review: Periprosthetic, Subtrochanteric, Pilon Fractures & Management | Part 22203

ABOS Part I & OITE Orthopaedic Review: HPII, Hand & Pediatric Fractures | Part 22216

Chapter Index