Overview
The coronoid is a small bony ridge on the front of the ulna that buttresses the elbow against posterior dislocation. Even a small coronoid fragment can cause recurrent instability if it goes unfixed, especially in the setting of a terrible-triad injury (elbow dislocation with radial head and coronoid fractures).
Fixation is considered when the coronoid fragment is large enough to secure, when the elbow is unstable after reduction, or when concurrent injuries of the radial head and collateral ligaments are being addressed.
Why it's done
Coronoid fixation is typically considered when imaging and the clinical picture together indicate that the fracture will not reliably heal or function without surgical stabilization. Common indications include:
Elbow instability after reduction
A coronoid deficiency often leaves the elbow prone to re-dislocation.
Terrible-triad injury
Coronoid fixation is part of the standard reconstruction.
Large anteromedial facet fracture
These fragments support the medial collateral ligament and varus stability.
Basal or body fractures
Larger fragments are amenable to screw or plate fixation.
How it works
Access is through a medial, lateral, or combined approach depending on the injury pattern. Small-fragment screws or a buttress plate are used for larger pieces. Smaller fragments or comminuted pieces are captured with transosseous sutures passed through drill holes in the ulna.
Associated radial head and collateral ligament injuries are addressed in the same operation. Intra-operative fluoroscopy and stress testing confirm that the elbow is stable through a full arc of motion.
Recovery
The elbow is splinted briefly and then started on protected range of motion, often in a hinged elbow brace. Early motion within a safe arc is a priority to prevent stiffness. Strengthening is added once the repair is well on its way. Full recovery is gradual, with milestones your surgeon will discuss at follow-up. Residual stiffness and heterotopic ossification are known risks; hardware is left unless symptomatic.
Contact
For questions about this procedure or to schedule an evaluation, call the office at (830) 625-0009 or request an appointment online.
Weight-Bearing After Repair
Controlled load is part of how bone heals. Once the fracture is stabilized with hardware, gentle weight through the limb stimulates the biology that builds callus and remodels bone — completely offloading a fixed fracture for too long can actually slow healing and stiffen the joint above and below. Full body weight right away, however, can overload the construct before bone has caught up. The right answer sits in between: a partial weight-bearing progression decided by your surgeon based on your fracture pattern, the strength of the fixation, your bone quality, and how the repair looks on post-op imaging. We tell you exactly how much weight the limb can take, when to advance, and what to watch for.
Risks & Why We Still Recommend It
Every operation carries risk. The reason we offer this procedure is that the condition, left untreated, causes an elbow that cannot stay reduced — the coronoid is a primary bony stabilizer and losing it produces a chronically unstable, painful joint. That is the trade we are managing — not eliminating risk, but choosing the smaller of two unfavorable trajectories.
The risks we discuss with patients before coronoid fixation include:
- bleeding and infection
- anesthesia risk
- stiffness (very common after any elbow surgery)
- heterotopic ossification
- hardware irritation
- fragment non-union
- ulnar or median nerve irritation from the exposure
The indication to proceed is a displaced or destabilizing coronoid fracture, usually as part of a terrible-triad or complex elbow-dislocation pattern. Patients who don't need this operation don't get it.
Further Reading
External patient-education references and related OSI pages for additional background: