Patella dislocation: Difference between revisions
No edit summary |
(citation edit) |
||
Line 36: | Line 36: | ||
==See Also== | ==See Also== | ||
[[Knee (Main)]] | [[Knee (Main)]] | ||
[[Category:Ortho]] | [[Category:Ortho]] |
Revision as of 16:02, 29 December 2014
Background
- extended knee with externally rotated foot and twisting motion
- acute: in traumatic injury, equal genders
- chronic: women/teenage girls
- commonly lateral displacement and unable to extend knee
Diagnosis
- Patella is usually displaced laterally; knee is held in flexion
- acute: often with large hemarthrosis
- chronic: little to no swelling
Work-Up
- xray if traumatic mechanism to r/o fracture
- do not need xay prior to reduction if chronic
- Post-reduction x-ray: confirm reduction, eval for fractures and loose bodies (avulsions, misalignment, etc)[1]
- common associated fractures
- medial patella facet
- lateral femoral condyle
Treatment
- Reduce; do not need x-rays prior to reduction
- Extend knee and slide patella back into place
- Knee immobilizer, NSAIDs, partial weight-bearing
- Orthopedic followup within 1-2wks
- Unable to Reduce or Loose bodies/fracture on post-reduction imaging
- Obtain immediate ortho consult
Source
- Fithian DC, Paxton EW, Stone ML, Silva P, Davis DK, Elias DA, White LM. Epidemiology and natural history of acute patellar dislocation. AJSM 2004;32:1114-1121
- Review of Orthopaedics, 6th Edition, Mark D. Miller MD, Stephen R. Thompson MBBS MEd FRCSC, Jennifer Hart MPAS PA-C ATC, an imprint of Elsevier, Philadelphia, Copyright 2012
- AAOS Comprehensive Orthopaedic Review, Jay R. Leiberman. Published by American Academy of Orthopaedic Surgeons, Rosemont IL. Copyright 2009
See Also
- ↑ Krause E A. et al. Pediatric lateral patellar dislocation: is there a role for plain radiography in the emergency department? J Emerg Med. 2013 Jun;44(6):1126-31