Patella Dislocation with Vertical Axis Rotation: The “Dorsal Fin” Patella
Joint Authors
Gamble, David
Otto, Quentin
Carrothers, Andrew D.
Khanduja, Vikas
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-25
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
A 44-year-old woman presented following minor trauma to her right knee.
While dancing she externally rotated around a planted foot and felt sudden pain in her right knee.
She presented with her knee locked in extension with a “dorsal fin” appearance of the soft tissues tented over the patella.
This was diagnosed as a rare case of an intraarticular patella dislocation, which was rotated 90 degrees about the vertical axis.
Closed reduction in the emergency room was unsuccessful but was achieved in theatre under general anaesthetic with muscle relaxation.
Postreduction arthroscopy demonstrated that no osteochondral or soft tissue damage to the knee had been sustained.
In patients presenting with a knee locked in extension with tenting of skin over the patella (the “dorsal fin” appearance), intra-articular patella dislocation should be suspected.
Attempts to reduce vertical patella dislocations under sedation with excessive force or repeatedly without success should be avoided to prevent unnecessary damage to the patellofemoral joint.
In this clinical situation we recommend closed reduction under general anaesthetic followed by immediate knee arthroscopy under the same anaesthetic to ensure that there is no chondral damage to the patella or femoral trochlea and to rule out an osteochondral fracture.
American Psychological Association (APA)
Gamble, David& Otto, Quentin& Carrothers, Andrew D.& Khanduja, Vikas. 2015. Patella Dislocation with Vertical Axis Rotation: The “Dorsal Fin” Patella. Case Reports in Orthopedics،Vol. 2015, no. 2015, pp.1-4.
https://search.emarefa.net/detail/BIM-1059467
Modern Language Association (MLA)
Gamble, David…[et al.]. Patella Dislocation with Vertical Axis Rotation: The “Dorsal Fin” Patella. Case Reports in Orthopedics No. 2015 (2015), pp.1-4.
https://search.emarefa.net/detail/BIM-1059467
American Medical Association (AMA)
Gamble, David& Otto, Quentin& Carrothers, Andrew D.& Khanduja, Vikas. Patella Dislocation with Vertical Axis Rotation: The “Dorsal Fin” Patella. Case Reports in Orthopedics. 2015. Vol. 2015, no. 2015, pp.1-4.
https://search.emarefa.net/detail/BIM-1059467
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1059467