title: Strength and functional deficits in individuals with hip osteoarthritis compared to healthy, older adults.
abstract: OBJECTIVE
  Hip osteoarthritis (OA) compromises quality of life for many individuals. This study quantified deficits in functional capacity for use in rehabilitation goal setting by combining assessments of muscle strength, function and physical activity in patients with hip OA and healthy adults.
  
  
  METHODS
  Twenty-six patients with end-stage hip OA and 18 healthy adults participated. Isometric muscle strength around the hip and knee was measured. Function was assessed using stair climbing, five-time-sit-to-stand, timed-up-and-go and 6-minute walk tests. The UCLA activity rating scale assessed physical activity. Analyses of covariance (ANCOVA) were used to assess differences between groups.
  
  
  RESULTS
  Patients had 30% less knee extensor (p < 0.001), 38% less knee flexor (p < 0.001), 10% less hip flexor (p = 0.47), 23% less hip extensor (p = 0.24) and 17% less hip abductor strength (p = 0.23) than healthy adults. Hip adductor strength was equal between groups (p = 0.93). Patients were 50% slower on the stair climbing test (p = 0.001), 34% slower on the timed-up-and-go test (p = 0.004), 34% slower on the five-time-sit-to-stand test (p = 0.001), and walked 28% less during the 6-min walk test (p < 0.001). Patients were less physically active (p = 0.001).
  
  
  CONCLUSIONS
  Patients had deficits in muscle strength, function and physical activity compared to healthy adults. Quantifying these deficits provides benchmarks for improvement during rehabilitation.
  
  
  CONCLUSIONS
  Hip osteoarthritis (OA) affects up to 28% of adults over the age of 65 and many individuals report functional and activity limitations directly related to their arthritic condition, posing a risk for future morbidity Total hip arthroplasty (THA) is the treatment of choice for decreasing pain and improving function, however, some individuals suffering from end-stage hip OA are not candidates for THA, and effective rehabilitation interventions to improve physical function are crucial Establishing estimates of the deficits in muscle strength, physical function and physical activity in people with and without hip OA can aid rehabilitation professionals in their goal setting and intervention planning Rehabilitation interventions should not only consist of muscle strengthening and functional training, but interventions to improve physical activity levels are required to improve overall physical functioning and to decrease risks for additional health complications.
authors: Physical Therapy Program and.
authors: Dana L
authors: DL
authors: Judd
authors: Abbey C
authors: AC
authors: Thomas
authors: Michael R
authors: MR
authors: Dayton
authors: Jennifer E
authors: JE
authors: Stevens-Lapsley
mesh_terms: D000368:Aged; D006621:Hip Joint / Q000503:physiopathology; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008875:Middle Aged; D053580:Muscle Strength; D015207:Osteoarthritis, Hip / Q000503:physiopathology* / Q000534:rehabilitation*; D010809:Physical Fitness / Q000502:physiology
references: Nat Rev Rheumatol. 2012 Jan 10;8(2):77-89
references: 22231237
references: MMWR Morb Mortal Wkly Rep. 2010 Oct 8;59(39):1261-5
references: 20930703
references: Clin Orthop Relat Res. 2010 Sep;468(9):2460-8
references: 20087703
references: Osteoarthritis Cartilage. 2010 Nov;18(11):1372-9
references: 20713163
references: J Orthop Sports Phys Ther. 2010 Oct;40(10):616-24
references: 20811166
references: J Arthroplasty. 1998 Dec;13(8):890-5
references: 9880181
references: Arch Phys Med Rehabil. 2010 Jul;91(7):1110-6
references: 20599051
references: Adv Drug Deliv Rev. 2006 May 20;58(2):150-67
references: 16530881
references: J Orthop Sports Phys Ther. 2009 Apr;39(4):A1-25
references: 19352008
references: Percept Mot Skills. 2006 Aug;103(1):215-22
references: 17037663
references: Eur J Appl Physiol. 2009 Jul;106(5):769-74
references: 19396616
references: Osteoarthritis Cartilage. 2011 Sep;19(9):1102-7
references: 21723401
references: J Biomed Inform. 2009 Apr;42(2):377-81
references: 18929686
references: Arch Phys Med Rehabil. 2004 Apr;85(4):574-81
references: 15083432
references: Osteoarthritis Cartilage. 2011 Jun;19(6):620-33
references: 21251989
references: CMAJ. 2002 Nov 12;167(10):1115-21
references: 12427702
references: J Rheumatol. 2002 Oct;29(10):2185-95
references: 12375331
references: J Appl Physiol (1985). 2007 Mar;102(3):942-8
references: 17122381
references: J Am Geriatr Soc. 1991 Feb;39(2):142-8
references: 1991946
references: Phys Ther. 2002 Feb;82(2):128-37
references: 11856064
references: J Rheumatol. 2005 Aug;32(8):1533-9
references: 16078331
references: Acta Orthop. 2010 Apr;81(2):183-8
references: 20367414
references: Man Ther. 2009 Dec;14(6):605-10
references: 19695944
references: Eur J Phys Rehabil Med. 2012 Dec;48(4):577-85
references: 22641252
references: J Orthop Sports Phys Ther. 2007 Jul;37(7):364-71
references: 17710905
references: Arch Phys Med Rehabil. 2002 Jan;83(1):70-80
references: 11782835
references: Scand J Med Sci Sports. 2001 Oct;11(5):280-6
references: 11696212
references: Med Clin North Am. 2009 Jan;93(1):45-66, x
references: 19059021
references: Man Ther. 2009 Dec;14(6):611-7
references: 19121974
references: Osteoarthritis Cartilage. 2012 Jan;20(1):6-12
references: 22044842
references: Phys Ther. 2005 Oct;85(10):1034-45
references: 16180952
references: Clin Orthop Relat Res. 2004 Oct;(427 Suppl):S6-15
references: 15480076
references: BMC Musculoskelet Disord. 2005 Jan 28;6:3
references: 15679884
references: Am J Public Health. 2010 Jan;100(1):100-7
references: 19910350
references: Clin Rehabil. 2013 Mar;27(3):281-7
references: 22843354
references: Arthritis Rheum. 2006 Oct 15;55(5):779-85
references: 17013827
references: Osteoarthritis Cartilage. 2012 Jun;20(6):503-10
references: 22330176