| HOME | HELP | CONTACT US | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
Sign In to gain access to subscriptions and/or personal tools.
|
|
|
|||||||
Sign In to gain access to subscriptions and/or personal tools. |
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
From the Southern California Permanente Medical Group, San Diego, California, the Children’s Hospital of San Diego, San Diego, California, and the Department of Medical Imaging, Mount Sinai Hospital, New York, New York, and the University Health Network, University of Toronto, Toronto, Canada
* Address correspondence to Donald C. Fithian, MD, Department of Orthopedic Surgery, 250 Travelodge Drive, El Cajon, CA 92020 (e-mail: donald.c.fithian{at}kp.org).
Background: The goals of this study were to (1) define the epidemiology of acute patellar dislocation, (2) determine the risk of subsequent patellar instability episodes (subluxation and/or redislocation) during the study period, and (3) identify risk factors for subsequent instability episodes.
Study Design: Prospective cohort study.
Methods: The authors prospectively followed 189 patients for a period of 2 to 5 years. Historical data, injury mechanisms, and physical and radiographic measurements were recorded to identify potential risk factors for poor outcomes.
Results: Risk was highest among females 10 to 17 years old. Patients presenting with a prior history of instability were more likely to be female (P <.05) and were older than first-time dislocation patients (P <.05). Fewer first-time dislocators (17%) had episodes of instability during follow-up than patients with a previous history of instability (49%) (P <.01). After adjusting for demographics, patients with a prior history had 7 times higher odds of subsequent instability episodes during follow-up than first time dislocators (adjusted odds ratio = 6.6, P <.001).
Conclusions: Patellar dislocators who present with a history of patellofemoral instability are more likely to be female, are older, and have greater risk of subsequent patellar instability episodes than first-time patellar dislocators. Risk of recurrent patellar instability episodes in either knee is much higher in this group than in first-time dislocators.
Key Words: acute patellar dislocation • prospective • outcome • natural history • risk factors
This article has been cited by other articles:
|
|
 |
|
  A. C. Colvin and R. V. West Patellar Instability J. Bone Joint Surg. Am., December 1, 2008; 90(12): 2751 - 2762. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Palmu, P. E. Kallio, S. T. Donell, I. Helenius, and Y. Nietosvaara Acute Patellar Dislocation in Children and Adolescents: A Randomized Clinical Trial J. Bone Joint Surg. Am., March 1, 2008; 90(3): 463 - 470. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. B. Frank, G. J. Jarit, J. T. Bravman, and J. E. Rosen Lower Extremity Injuries in the Skeletally Immature Athlete J. Am. Acad. Ortho. Surg., June 1, 2007; 15(6): 356 - 366. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. S. Mulford, C. J. Wakeley, and J. D. J. Eldridge Assessment and management of chronic patellofemoral instability J Bone Joint Surg Br, June 1, 2007; 89-B(6): 709 - 716. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. G. Sanders, N. B. Paruchuri, and M. B. Zlatkin MRI of osteochondral defects of the lateral femoral condyle: incidence and pattern of injury after transient lateral dislocation of the patella. Am. J. Roentgenol., November 1, 2006; 187(5): 1332 - 1337. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. J. Ganley, R. L. Gaugles, and L. A. Moroz Consultation With the Specialist: Patellofemoral Conditions in Childhood Pediatr. Rev., July 1, 2006; 27(7): 264 - 270. [Full Text] [PDF]
|
|
|
|
 |
|
 R Dath, J Chakravarthy, and K. Porter Patella dislocations Trauma, January 1, 2006; 8(1): 5 - 11. [Abstract] [PDF]
|
|
| HOME | HELP | CONTACT US | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
