Elbow Structured Oral: Master This Orthopedic Exam Question 3
Key Takeaway
This article provides essential research regarding Elbow Structured Oral: Master This Orthopedic Exam Question 3. An elbow structured oral examination evaluates a candidate's orthopedic expertise through case-based scenarios. It assesses skills in patient history, physical examination, differential diagnosis, and management planning for conditions like frozen shoulder, including discussing treatments such as steroid injections, MUA, or arthroscopic arthrolysis, and associated patient risks.
A 48-year-old male presents with persistent elbow pain and mechanical symptoms. Radiographs show a distal humerus injury and loose bodies. You are planning arthroscopy. Discuss the surgical anatomy of the portals and the specific neurovascular structures at risk.
Candidate: I would use standard portals. For the anterior portals (anteromedial and anterolateral), the radial nerve is at risk laterally and the median nerve/brachial artery are at risk medially. Posteriorly, I must protect the ulnar nerve.
Failing to specify the location of the nerves relative to the joint capsule. Candidates often state "I avoid the nerves" without defining the specific safe zones (e.g., the lateral antebrachial cutaneous nerve at the anterolateral portal) or the proximity of the ulnar nerve to the posteromedial portal.
The candidate structures their answer anatomically: 1. Anterolateral Portal: Safe, but the Radial Nerve is the primary risk; it lies 1cm lateral. 2. Anteromedial Portal: The Median Nerve and Brachial Artery are at risk; the portal should be placed proximal and anterior to the medial epicondyle. 3. Posterolateral Portal: The most common portal, relatively safe. 4. Posteromedial Portal: Ulnar Nerve is at extreme risk; it must be protected or transposed if performing extensive debridement. Mentioning the 'safe zones' and the use of a trocar/cannula is essential.
During the procedure, you encounter a chronic, non-reconstructible radial head fracture. The patient has significant valgus instability. How do you approach the stabilization of the joint?
Candidate: I would consider a radial head replacement. If there is significant valgus instability, I would also repair the medial collateral ligament.
Ignoring the "Terrible Triad" concept. If the patient has a complex injury, replacing the radial head alone without addressing the coronoid fracture or the LCL/MCL complex results in a high failure rate due to persistent instability.
A systematic response: 1. Assess Stability: Rule out Essex-Lopresti injury (distal radioulnar joint status). 2. Radial Head: Propose metallic arthroplasty (standard of care for unreconstructible fractures). 3. Coronoid: If coronoid is >50% or there is persistent instability, it requires internal fixation (e.g., screw or buttress plate). 4. Ligamentous: LCL repair is mandatory in triad injuries; MCL repair is indicated only if valgus instability persists after radial head and LCL restoration.
