Elbow Osteoarthritis Board Review: Interactive MCQ Case Studies
Key Takeaway
Preparing for elbow osteoarthritis on orthopedic board exams involves understanding diagnosis, staging, and evidence-based surgical management. This includes indications for arthroscopy, debridement, ulnar nerve transposition, and total elbow arthroplasty. Interactive MCQs with detailed explanations are crucial for solidifying knowledge and applying clinical reasoning to complex patient scenarios.
A 55-year-old former professional baseball pitcher presents with 3 years of progressive right elbow pain, stiffness, and mechanical symptoms. Physical examination reveals a flexion contracture of 20 degrees with a flexion arc to 120 degrees and global crepitus. Ulnar nerve symptoms are intermittently present. Please interpret these radiographs and discuss your management.
Candidate: The radiographs show advanced primary osteoarthritis with significant osteophyte formation at the olecranon tip and coronoid, narrowing of the joint space, and loose bodies. I would start with a course of non-operative management. If that fails, I would offer an open or arthroscopic debridement with loose body removal and osteophyte excision. I would assess the ulnar nerve and decompress it if necessary.
Candidates often suggest "elbow replacement" too early, failing to account for the patient's age and high physical demands. Furthermore, failing to mention a structured approach—separating the management into patient factors (age/demand), mechanical factors (impingement), and neurological factors (ulnar nerve)—is a common error that prevents a top-tier grade.
A perfect response structure: 1. Clinical Classification: Identify this as "Valgus Extension Overload" or primary OA with mechanical block. 2. Debridement Logic: Propose a "Outerbridge-Kashiwagi" (OK) procedure or systematic arthroscopic/open debridement. Emphasize the importance of removing the olecranon and coronoid osteophytes to regain the arc of motion. 3. Neurological Management: Explicitly mention that ulnar nerve status must be addressed; if symptoms are present, a submuscular or subcutaneous transposition is standard during open procedures to prevent post-op tethering. 4. Contraindications: Acknowledge that Total Elbow Arthroplasty (TEA) is the "last resort" and is contraindicated here given the patient's demand profile and remaining bone stock.
