title: A systematic review of postural control during single-leg stance in patients with untreated anterior cruciate ligament injury.
abstract: OBJECTIVE
  The aim of this review was to determine whether postural control is impaired in patients with anterior cruciate ligament (ACL) injury as compared to healthy controls.
  
  
  METHODS
  The relevant papers were retrieved through electronic databases including PubMed, EMBASE, Web of Science, and Sport Discus followed by hand search and contact with the authors. Studies that evaluated static postural control during single-leg stance without applying external perturbations were included. Also, the patients should not have undergone ACL reconstruction or any surgical repair on the injured knee.
  
  
  RESULTS
  In total, 12 studies were selected for full review. The included studies showed larger postural sway amplitudes or velocities during single-leg stance on the injured leg and the uninjured leg when compared to healthy controls with medium to large effect size. Also, no significant difference was found between the injured and uninjured legs of ACL-injured patients during eyes open condition in all studies supported by small effect size. However, the within-group difference was found to be significant during eyes closed condition, with injured leg displaying larger sway.
  
  
  CONCLUSIONS
  The present review indicates that postural control is impaired in both legs, especially injured leg. The result of within-group difference in eyes open condition confirms bilateral deficit of postural control. However, the within-group difference during eyes closed condition indicates again that ACL injury affects the injured leg more than the uninjured leg. In designing rehabilitation protocols, clinicians should consider training postural control of not just the injured but also the uninjured leg.
authors: Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors: Hossein
authors: H
authors: Negahban
authors: Masood
authors: M
authors: Mazaheri
authors: Idsart
authors: I
authors: Kingma
authors: Jaap H
authors: JH
authors: van Dieën
mesh_terms: D000070598:Anterior Cruciate Ligament Injuries; D006801:Humans; D007593:Joint Instability / Q000503:physiopathology*; D007719:Knee Joint / Q000503:physiopathology*; D007866:Leg; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology; D014785:Vision, Ocular
references: J Bone Joint Surg Br. 1993 Mar;75(2):311-5
references: 8444956
references: Int J Sports Med. 1990 Feb;11(1):73-7
references: 2318567
references: Clin J Sport Med. 1996 Jan;6(1):32-9
references: 8925363
references: J Oral Rehabil. 2006 Aug;33(8):576-87
references: 16856955
references: J Orthop Sports Phys Ther. 2001 Nov;31(11):632-44
references: 11720296
references: J Physiol. 1986 Jun;375:137-52
references: 3795057
references: Arthroscopy. 2003 Jan;19(1):2-12
references: 12522394
references: J Mot Behav. 1999 Dec;31(4):358-366
references: 11177643
references: J Orthop Sports Phys Ther. 2010 Nov;40(11):705-21
references: 20710097
references: Am J Sports Med. 2005 Oct;33(10):1527-35
references: 16009987
references: Am J Sports Med. 1995 Jan-Feb;23(1):24-34
references: 7726347
references: Knee Surg Sports Traumatol Arthrosc. 2010 Jan;18(1):56-63
references: 19693487
references: Am J Sports Med. 2010 Mar;38(3):586-93
references: 20110458
references: J Orthop Sports Phys Ther. 2001 Oct;31(10):567-76
references: 11665744
references: Phys Ther. 2007 Jun;87(6):737-50
references: 17442840
references: J Orthop Sci. 2005 May;10(3):277-83
references: 15928890
references: Scand J Med Sci Sports. 1998 Dec;8(6):432-8
references: 9863982
references: Clin Orthop Relat Res. 1991 Feb;(263):190-9
references: 1993375
references: Int J Epidemiol. 2007 Jun;36(3):666-76
references: 17470488
references: Am J Sports Med. 2005 Apr;33(4):492-501
references: 15722287
references: BMC Med Res Methodol. 2005 Apr 20;5:13
references: 15840177
references: J Clin Epidemiol. 2006 Aug;59(8):765-9
references: 16828667
references: Gait Posture. 2009 Nov;30(4):477-81
references: 19709885
references: Gait Posture. 2005 Jan;21(1):48-58
references: 15536033
references: Am J Sports Med. 1994 Jul-Aug;22(4):531-6
references: 7943520
references: Exp Brain Res. 2007 Sep;182(2):249-60
references: 17704908
references: Clin Biomech (Bristol, Avon). 2010 May;25(4):277-83
references: 20097459
references: J Orthop Sports Phys Ther. 1999 Oct;29(10):587-94
references: 10560067
references: Acta Orthop Scand. 1990 Apr;61(2):131-5
references: 2360429
references: Arch Phys Med Rehabil. 2000 Mar;81(3):265-8
references: 10724068
references: J Electromyogr Kinesiol. 2002 Jun;12(3):165
references: 12086809
references: Neurosci Lett. 2008 Aug 29;441(3):257-60
references: 18582536
references: Gait Posture. 1998 Oct 1;8(2):136-142
references: 10200404
references: BMC Musculoskelet Disord. 2004 Nov 17;5:44
references: 15548328
references: Arch Phys Med Rehabil. 2003 Aug;84(8):1217-23
references: 12917863
references: Knee Surg Sports Traumatol Arthrosc. 2012 Aug;20(8):1603-10
references: 22124847
references: Knee Surg Sports Traumatol Arthrosc. 2011 Jul;19(7):1168-77
references: 21344230
references: Knee Surg Sports Traumatol Arthrosc. 2010 Jun;18(6):805-13
references: 19851754
references: Am J Sports Med. 2007 Jul;35(7):1123-30
references: 17468378
references: Minerva Stomatol. 2005 Nov-Dec;54(11-12):611-33
references: 16456517