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Related Experiment Video

Updated: Dec 20, 2025

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

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A Rotated and Laterally Displaced Patellar Dislocation.

Samuel Frankel¹, Michael Bux¹, Daniel Schloss¹

¹University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.

The Journal of Emergency Medicine

|May 28, 2020

Summary

Emergency physicians should recognize rare rotational patellar dislocations. Prompt diagnosis and orthopedic collaboration can enable successful closed reduction in the emergency department.

Keywords:

closed reduction dislocation knee luxation open reduction reduction rotational dislocation subluxation

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Area of Science:

Orthopedic Surgery
Emergency Medicine

Background:

Patellar dislocations are common orthopedic emergencies.
Rarer variants, such as rotational dislocations, often necessitate surgical intervention.

Observation:

A case of combined rotational and lateral patellar dislocation in a young female is presented.
Diagnosis of rotational dislocation was made after initial failed reduction attempts under sedation.

Findings:

Successful closed reduction of the patellar dislocation was achieved in the emergency department under sedation.
This was accomplished with the assistance of orthopedic surgery colleagues.

Implications:

Emergency physicians must be aware of uncommon patellar dislocation types.
Understanding indications for closed reduction is crucial for safe and efficient patient management.
Collaboration with orthopedic surgery is vital for evaluating and treating these injuries.