Persistent Medial Subluxation of the Ulna with Radiotrochlear Articulation

Document Type : CASE REPORT


1 Mashhad University Of Medical Sciences, Mashhad, Iran

2 Department of Surgery and Perioperative Care, Dell Medical School at the University of Texas at Austin, Austin, TX, USA


Two patients-one with a terrible triad fracture dislocation and one with an anterior olecranon fracture dislocation—were
treated for maltracking of the elbow (medial subluxation). The radial head articulated with the lateral trochlea while the
ulnar trochlear notch was perched over the medial trochlea. The late revision surgery could not correct the subluxation
because the joints were accustomed to the new alignment, however the overall function was reasonable.


Main Subjects

1. Chen NC, Jupiter JB, Steinmann SP, Ring D. Nonacute
treatment of elbow fracture with persistent
ulnohumeral dislocation or subluxation. J Bone Joint
Surg Am. 2014; 96(15):1308-16. 
2. McKee RC, McKee MD. Complex fractures of the
proximal ulna: the critical importance of the coronoid
fragment. Instr Course Lect. 2012; 61(1):227-33.
3. Wright TW, Wong AM, Jaffe R. Functional outcome
comparison of semiconstrained and unconstrained
total elbow arthroplasties. J Shoulder Elbow Surg.
2000; 9(6):524-31.