Skip to main content
Top
Published in: BMC Musculoskeletal Disorders 1/2006

Open Access 01-12-2006 | Research article

Modeling early recovery of physical function following hip and knee arthroplasty

Authors: Deborah M Kennedy, Paul W Stratford, Steven E Hanna, Jean Wessel, Jeffrey D Gollish

Published in: BMC Musculoskeletal Disorders | Issue 1/2006

Login to get access

Abstract

Background

Information on early recovery after arthroplasty is needed to help benchmark progress and make appropriate decisions concerning patient rehabilitation needs. The purpose of this study was to model early recovery of physical function in patients undergoing total hip (THA) and knee (TKA) arthroplasty, using physical performance and self-report measures.

Methods

A sample of convenience of 152 subjects completed testing, of which 69 (mean age: 66.77 ± 8.23 years) underwent THA and 83 (mean age: 60.25 ± 11.19 years) TKA. Postoperatively, patients were treated using standardized care pathways and rehabilitation protocols. Using a repeated measures design, patients were assessed at multiple time points over the first four postoperative months. Outcome measures included the Lower Extremity Function Scale (LEFS), the physical function subscale of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC PF), the 6 minute walk test (6 MWT), timed up and go test (TUG) and a timed stair test (ST). Average recovery curves for each of the measures were characterized using hierarchical linear modeling. Predictors of recovery were sequentially modeled after validation of the basic developmental models.

Results

Slopes of recovery were greater in the first 6 to 9 weeks with a second-degree polynomial growth term (weeks squared) providing a reasonable fit for the data over the study interval. Different patterns of recovery were observed between the self-report measures of physical function and the performance measures. In contrast to the models for the WOMAC PF and the LEFS, site of arthroplasty was a significant predictor (p = 0.001) in all of the physical performance measure models with the patients post TKA initially demonstrating higher function. Site of arthroplasty (p = 0.025) also predicted the rate of change for patients post THA and between 9 to 11 weeks after surgery, the THA group surpassed the function of the patients post TKA.

Conclusion

Knowledge about the predicted growth curves will assist clinicians in referencing patient progress, and determining the critical time points for measuring change. The study has contributed further evidence to highlight the benefit of using physical performance measures to learn about the patients' actual level of disability.
Appendix
Available only for authorised users
Literature
1.
go back to reference Roos EM: Effectiveness and practice variation of rehabilitation after joint replacement. Curr Opin Rheumatol. 2003, 15 (2): 160-162. 10.1097/00002281-200303000-00014.CrossRefPubMed Roos EM: Effectiveness and practice variation of rehabilitation after joint replacement. Curr Opin Rheumatol. 2003, 15 (2): 160-162. 10.1097/00002281-200303000-00014.CrossRefPubMed
2.
go back to reference Bachmeier CJ, March LM, Cross MJ, Lapsley HM, Tribe KL, Courtenay BG, Brooks PM: A comparison of outcomes in osteoarthritis patients undergoing total hip and knee replacement surgery. Osteoarthritis Cartilage. 2001, 9 (2): 137-146. 10.1053/joca.2000.0369.CrossRefPubMed Bachmeier CJ, March LM, Cross MJ, Lapsley HM, Tribe KL, Courtenay BG, Brooks PM: A comparison of outcomes in osteoarthritis patients undergoing total hip and knee replacement surgery. Osteoarthritis Cartilage. 2001, 9 (2): 137-146. 10.1053/joca.2000.0369.CrossRefPubMed
3.
go back to reference Fortin PR, Penrod JR, Clarke AE, St-Pierre Y, Joseph L, Belisle P, Liang MH, Ferland D, Phillips CB, Mahomed N, Tanzer M, Sledge C, Fossel AH, Katz JN: Timing of total joint replacement affects clinical outcomes among patients with osteoarthritis of the hip or knee. Arthritis Rheum. 2002, 46 (12): 3327-3330. 10.1002/art.10631.CrossRefPubMed Fortin PR, Penrod JR, Clarke AE, St-Pierre Y, Joseph L, Belisle P, Liang MH, Ferland D, Phillips CB, Mahomed N, Tanzer M, Sledge C, Fossel AH, Katz JN: Timing of total joint replacement affects clinical outcomes among patients with osteoarthritis of the hip or knee. Arthritis Rheum. 2002, 46 (12): 3327-3330. 10.1002/art.10631.CrossRefPubMed
4.
go back to reference Jones CA, Voaklander DC, Johnston DWC, Suarez-Almazor ME: Health Related Quality of Life Outcomes After Total Hip and Knee Arthroplasties in a Community Based Population. J Rheumatol. 2000, 27 (7): 1745-1752.PubMed Jones CA, Voaklander DC, Johnston DWC, Suarez-Almazor ME: Health Related Quality of Life Outcomes After Total Hip and Knee Arthroplasties in a Community Based Population. J Rheumatol. 2000, 27 (7): 1745-1752.PubMed
5.
go back to reference Marx RG, Jones EC, Atwan NC, Closkey RF, Salvati EA, Sculco TP: Measuring improvement following total hip and knee arthroplasty using patient-based measures of outcome. J Bone Joint Surg Am. 2005, 87 (9): 1999-2005. 10.2106/JBJS.D.02286.CrossRefPubMed Marx RG, Jones EC, Atwan NC, Closkey RF, Salvati EA, Sculco TP: Measuring improvement following total hip and knee arthroplasty using patient-based measures of outcome. J Bone Joint Surg Am. 2005, 87 (9): 1999-2005. 10.2106/JBJS.D.02286.CrossRefPubMed
6.
go back to reference Nilsdotter AK, Lohmander LS: Age and waiting time as predictors of outcome after total hip replacement for osteoarthritis. Rheumatology (Oxford). 2002, 41 (11): 1261-1267. 10.1093/rheumatology/41.11.1261.CrossRef Nilsdotter AK, Lohmander LS: Age and waiting time as predictors of outcome after total hip replacement for osteoarthritis. Rheumatology (Oxford). 2002, 41 (11): 1261-1267. 10.1093/rheumatology/41.11.1261.CrossRef
7.
go back to reference Parent E, Moffet H: Comparative responsiveness of locomotor tests and questionnaires used to follow early recovery after total knee arthroplasty. Arch Phys Med Rehabil. 2002, 83 (1): 70-80. 10.1053/apmr.2002.27337.CrossRefPubMed Parent E, Moffet H: Comparative responsiveness of locomotor tests and questionnaires used to follow early recovery after total knee arthroplasty. Arch Phys Med Rehabil. 2002, 83 (1): 70-80. 10.1053/apmr.2002.27337.CrossRefPubMed
8.
go back to reference Ethgen O, Bruyere O, Richy F, Dardennes C, Reginster JY: Health-related quality of life in total hip and total knee arthroplasty. A qualitative and systematic review of the literature. J Bone Joint Surg Am. 2004, 86-A (5): 963-974.PubMed Ethgen O, Bruyere O, Richy F, Dardennes C, Reginster JY: Health-related quality of life in total hip and total knee arthroplasty. A qualitative and systematic review of the literature. J Bone Joint Surg Am. 2004, 86-A (5): 963-974.PubMed
9.
go back to reference Cress ME, Schechtman KB, Mulrow CD, Fiatarone MA, Gerety MB, Buchner DM: Relationship Between Physical Performance and Self-Perceived Physical Function. J Am Geriatr Soc. 1995, 43: 93-101.CrossRefPubMed Cress ME, Schechtman KB, Mulrow CD, Fiatarone MA, Gerety MB, Buchner DM: Relationship Between Physical Performance and Self-Perceived Physical Function. J Am Geriatr Soc. 1995, 43: 93-101.CrossRefPubMed
10.
go back to reference Hoeymans N, Feskens EJ, van den Bos GA, Kromhout D: Measuring functional status: cross-sectional and longitudinal associations between performance and self-report (Zutphen Elderly Study 1990-1993). J Clin Epidemiol. 1996, 49 (10): 1103-1110. 10.1016/0895-4356(96)00210-7.CrossRefPubMed Hoeymans N, Feskens EJ, van den Bos GA, Kromhout D: Measuring functional status: cross-sectional and longitudinal associations between performance and self-report (Zutphen Elderly Study 1990-1993). J Clin Epidemiol. 1996, 49 (10): 1103-1110. 10.1016/0895-4356(96)00210-7.CrossRefPubMed
11.
go back to reference Kennedy D, Stratford PW, Pagura SM, Walsh M, Woodhouse LJ: Comparison of gender and group differences in self-report and physical performance measures in total hip and knee arthroplasty candidates. J Arthroplasty. 2002, 17 (1): 70-77. 10.1054/arth.2002.29324.CrossRefPubMed Kennedy D, Stratford PW, Pagura SM, Walsh M, Woodhouse LJ: Comparison of gender and group differences in self-report and physical performance measures in total hip and knee arthroplasty candidates. J Arthroplasty. 2002, 17 (1): 70-77. 10.1054/arth.2002.29324.CrossRefPubMed
12.
go back to reference Maly MR, Costigan PA, Olney SJ: Determinants of self-report outcome measures in people with knee osteoarthritis. Arch Phys Med Rehabil. 2006, 87 (1): 96-104. 10.1016/j.apmr.2005.08.110.CrossRefPubMed Maly MR, Costigan PA, Olney SJ: Determinants of self-report outcome measures in people with knee osteoarthritis. Arch Phys Med Rehabil. 2006, 87 (1): 96-104. 10.1016/j.apmr.2005.08.110.CrossRefPubMed
13.
go back to reference Stratford PW, Kennedy DM: Performance measures were necessary to obtain a complete picture of osteoarthritic patients. J Clin Epidemiol. 2006, 59 (2): 160-167. 10.1016/j.jclinepi.2005.07.012.CrossRefPubMed Stratford PW, Kennedy DM: Performance measures were necessary to obtain a complete picture of osteoarthritic patients. J Clin Epidemiol. 2006, 59 (2): 160-167. 10.1016/j.jclinepi.2005.07.012.CrossRefPubMed
14.
go back to reference Stratford PW, Kennedy DM, Hanna SE: Condition-specific Western Ontario McMaster Osteoarthritis Index was not superior to region-specific Lower Extremity Functional Scale at detecting change. J Clin Epidemiol. 2004, 57 (10): 1025-1032. 10.1016/j.jclinepi.2004.03.008.CrossRefPubMed Stratford PW, Kennedy DM, Hanna SE: Condition-specific Western Ontario McMaster Osteoarthritis Index was not superior to region-specific Lower Extremity Functional Scale at detecting change. J Clin Epidemiol. 2004, 57 (10): 1025-1032. 10.1016/j.jclinepi.2004.03.008.CrossRefPubMed
15.
go back to reference Healy WL, Iorio R, Lemos MJ: Athletic activity after joint replacement. Am J Sports Med. 2001, 29 (3): 377-388.PubMed Healy WL, Iorio R, Lemos MJ: Athletic activity after joint replacement. Am J Sports Med. 2001, 29 (3): 377-388.PubMed
16.
go back to reference Noble PC, Gordon MJ, Weiss JM, Reddix RN, Conditt MA, Mathis KB: Does total knee replacement restore normal knee function?. Clin Orthop Relat Res. 2005, 157-165. 10.1097/01.blo.0000150130.03519.fb. Noble PC, Gordon MJ, Weiss JM, Reddix RN, Conditt MA, Mathis KB: Does total knee replacement restore normal knee function?. Clin Orthop Relat Res. 2005, 157-165. 10.1097/01.blo.0000150130.03519.fb.
17.
go back to reference Byrk AS, Raudenbush SW: Hierarchical Linear Models: Applications and Data Analysis Methods. 1992, Newbury Park , Sage Byrk AS, Raudenbush SW: Hierarchical Linear Models: Applications and Data Analysis Methods. 1992, Newbury Park , Sage
18.
go back to reference Stratford PW, Hanna SE, Kennedy DM, Alcock GK: Hierarchical Linear Modeling: An Effective Analytic Technique for Examining Change in Clinical Longitudinal Data. Physiother Can. 2003, 55 (3): 145-152.CrossRef Stratford PW, Hanna SE, Kennedy DM, Alcock GK: Hierarchical Linear Modeling: An Effective Analytic Technique for Examining Change in Clinical Longitudinal Data. Physiother Can. 2003, 55 (3): 145-152.CrossRef
19.
go back to reference Boardman DL, Dorey F, Thomas BJ, Lieberman JR: The accuracy of assessing total hip arthroplasty outcomes: a prospective correlation study of walking ability and 2 validated measurement devices. J Arthroplasty. 2000, 15 (2): 200-204. 10.1016/S0883-5403(00)90242-0.CrossRefPubMed Boardman DL, Dorey F, Thomas BJ, Lieberman JR: The accuracy of assessing total hip arthroplasty outcomes: a prospective correlation study of walking ability and 2 validated measurement devices. J Arthroplasty. 2000, 15 (2): 200-204. 10.1016/S0883-5403(00)90242-0.CrossRefPubMed
20.
go back to reference Kreibich DN, Vaz M, Bourne RB, Rorabeck CH, Kim P, Hardie R, Kramer J, Kirkley A: What is the best way of assessing outcome after total knee replacement?. Clin Orthop. 1996, 221-225. Kreibich DN, Vaz M, Bourne RB, Rorabeck CH, Kim P, Hardie R, Kramer J, Kirkley A: What is the best way of assessing outcome after total knee replacement?. Clin Orthop. 1996, 221-225.
21.
go back to reference Laupacis A, Bourne R, Rorabeck C, Feeny D, Wong C, Tugwell P, Leslie K, Bullas R: The effect of elective total hip replacement on health-related quality of life. J Bone Joint Surg Am. 1993, 75 (11): 1619-1626.PubMed Laupacis A, Bourne R, Rorabeck C, Feeny D, Wong C, Tugwell P, Leslie K, Bullas R: The effect of elective total hip replacement on health-related quality of life. J Bone Joint Surg Am. 1993, 75 (11): 1619-1626.PubMed
22.
go back to reference Mahon JL, Bourne RB, Rorabeck CH, Feeny DH, Stitt L, Webster-Bogaert S: Health-related quality of life and mobility of patients awaiting elective total hip arthroplasty: a prospective study. Can Med Assoc J. 2002, 167 (10): 1115-1121. Mahon JL, Bourne RB, Rorabeck CH, Feeny DH, Stitt L, Webster-Bogaert S: Health-related quality of life and mobility of patients awaiting elective total hip arthroplasty: a prospective study. Can Med Assoc J. 2002, 167 (10): 1115-1121.
23.
go back to reference Freter SH, Fruchter N: Relationship between timed 'up and go' and gait time in an elderly orthopaedic rehabilitation population. Clin Rehabil. 2000, 14 (1): 96-101. 10.1191/026921500675545616.CrossRefPubMed Freter SH, Fruchter N: Relationship between timed 'up and go' and gait time in an elderly orthopaedic rehabilitation population. Clin Rehabil. 2000, 14 (1): 96-101. 10.1191/026921500675545616.CrossRefPubMed
24.
go back to reference Mizner RL, Petterson SC, Snyder-Mackler L: Quadriceps strength and the time course of functional recovery after total knee arthroplasty. J Orthop Sports Phys Ther. 2005, 35 (7): 424-436. 10.2519/jospt.2005.2036.CrossRefPubMed Mizner RL, Petterson SC, Snyder-Mackler L: Quadriceps strength and the time course of functional recovery after total knee arthroplasty. J Orthop Sports Phys Ther. 2005, 35 (7): 424-436. 10.2519/jospt.2005.2036.CrossRefPubMed
25.
go back to reference Ouellet D, Moffet H: Locomotor deficits before and two months after knee arthroplasty. Arthritis Rheum. 2002, 47 (5): 484-493. 10.1002/art.10652.CrossRefPubMed Ouellet D, Moffet H: Locomotor deficits before and two months after knee arthroplasty. Arthritis Rheum. 2002, 47 (5): 484-493. 10.1002/art.10652.CrossRefPubMed
26.
go back to reference Walsh M, Kennedy D, Stratford P, Woodhouse LJ: Perioperative functional performance of women and men following total knee arthroplasty. Physiother Can. 2001, 53 (2): 92-100. Walsh M, Kennedy D, Stratford P, Woodhouse LJ: Perioperative functional performance of women and men following total knee arthroplasty. Physiother Can. 2001, 53 (2): 92-100.
27.
go back to reference Walsh M, Woodhouse LJ, Thomas SG, Finch E: Physical Impairments and Functional Limitations: A Comparison of Individuals 1 Year After Total Knee Arthroplasty With Control Subjects. Phys Ther. 1998, 78 (3): 248-258.PubMed Walsh M, Woodhouse LJ, Thomas SG, Finch E: Physical Impairments and Functional Limitations: A Comparison of Individuals 1 Year After Total Knee Arthroplasty With Control Subjects. Phys Ther. 1998, 78 (3): 248-258.PubMed
28.
go back to reference Kennedy DM, Stratford PW, Wessel J, Gollish JD, Penney D: Assessing stability and change of four performance measures: a longitudinal study evaluating outcome following total hip and knee arthroplasty. BMC Musculoskelet Disord. 2005, 6 (1): 3-10.1186/1471-2474-6-3.CrossRefPubMedPubMedCentral Kennedy DM, Stratford PW, Wessel J, Gollish JD, Penney D: Assessing stability and change of four performance measures: a longitudinal study evaluating outcome following total hip and knee arthroplasty. BMC Musculoskelet Disord. 2005, 6 (1): 3-10.1186/1471-2474-6-3.CrossRefPubMedPubMedCentral
29.
go back to reference Bellamy N: Osteoarthritis - An Evaluative Index for Clinical Trials. 1982, Hamilton , McMaster University Bellamy N: Osteoarthritis - An Evaluative Index for Clinical Trials. 1982, Hamilton , McMaster University
30.
go back to reference Bellamy N: WOMAC Osteoarthritis Index: User Guide IV. 2000, Queensland (Australia) , WOMAC, 1-43. Bellamy N: WOMAC Osteoarthritis Index: User Guide IV. 2000, Queensland (Australia) , WOMAC, 1-43.
31.
go back to reference Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW: Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol. 1988, 15 (12): 1833-1840.PubMed Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW: Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol. 1988, 15 (12): 1833-1840.PubMed
32.
go back to reference McConnell S, Kolopack P, Davis AM: The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC): a review of its utility and measurement properties. Arthritis Care Res. 2001, 45 (5): 453-461. 10.1002/1529-0131(200110)45:5<453::AID-ART365>3.0.CO;2-W.CrossRef McConnell S, Kolopack P, Davis AM: The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC): a review of its utility and measurement properties. Arthritis Care Res. 2001, 45 (5): 453-461. 10.1002/1529-0131(200110)45:5<453::AID-ART365>3.0.CO;2-W.CrossRef
33.
go back to reference Binkley JM, Stratford PW, Lott SA, Riddle DL: The Lower Extremity Functional Scale (LEFS): scale development, measurement properties, and clinical application. North American Orthopaedic Rehabilitation Research Network. Phys Ther. 1999, 79 (4): 371-383.PubMed Binkley JM, Stratford PW, Lott SA, Riddle DL: The Lower Extremity Functional Scale (LEFS): scale development, measurement properties, and clinical application. North American Orthopaedic Rehabilitation Research Network. Phys Ther. 1999, 79 (4): 371-383.PubMed
34.
go back to reference Stratford PW, Binkley JM, Watson J, Heath-Jones T: Validation of the LEFS on patients with total joint arthroplasty. Physiother Can. 2000, 52 (2): 97-105. Stratford PW, Binkley JM, Watson J, Heath-Jones T: Validation of the LEFS on patients with total joint arthroplasty. Physiother Can. 2000, 52 (2): 97-105.
35.
go back to reference Guyatt GH, Pugsley SO, Sullivan MJ, Thompson PJ, Berman L, Jones NL, Fallen EL, Taylor DW: Effect of encouragement on walking test performance. Thorax. 1984, 39 (11): 818-822.CrossRefPubMedPubMedCentral Guyatt GH, Pugsley SO, Sullivan MJ, Thompson PJ, Berman L, Jones NL, Fallen EL, Taylor DW: Effect of encouragement on walking test performance. Thorax. 1984, 39 (11): 818-822.CrossRefPubMedPubMedCentral
36.
go back to reference Podsiadlo D, Richardson S: The timed "Up & Go": a test of basic functional mobility for frail elderly persons. J Am Geriatr Soc. 1991, 39 (2): 142-148.CrossRefPubMed Podsiadlo D, Richardson S: The timed "Up & Go": a test of basic functional mobility for frail elderly persons. J Am Geriatr Soc. 1991, 39 (2): 142-148.CrossRefPubMed
37.
go back to reference Raudenbush SW: Comparing personal trajectories and drawing causal inferences from longitudinal data. Annu Rev Psychol. 2001, 52: 501-525. 10.1146/annurev.psych.52.1.501.CrossRefPubMed Raudenbush SW: Comparing personal trajectories and drawing causal inferences from longitudinal data. Annu Rev Psychol. 2001, 52: 501-525. 10.1146/annurev.psych.52.1.501.CrossRefPubMed
38.
go back to reference Snijders TAB, Bosker RJ: Multilevel Analysis:An introduction to basic and advanced multilevel modeling. 2002, London , Sage Snijders TAB, Bosker RJ: Multilevel Analysis:An introduction to basic and advanced multilevel modeling. 2002, London , Sage
39.
go back to reference Kennedy DM, Hanna SE, Stratford PW, Wessel J, Gollish JD: Preoperative Function and Gender Predict Pattern of Functional Recovery Following Hip and Knee Arthroplasty. J Arthroplasty. 2006, 21 (4): 559-566. 10.1016/j.arth.2005.07.010.CrossRefPubMed Kennedy DM, Hanna SE, Stratford PW, Wessel J, Gollish JD: Preoperative Function and Gender Predict Pattern of Functional Recovery Following Hip and Knee Arthroplasty. J Arthroplasty. 2006, 21 (4): 559-566. 10.1016/j.arth.2005.07.010.CrossRefPubMed
40.
go back to reference Aarons H, Hall G, Hughes S, Salmon P: Short-Term Recovery From Hip and Knee Arthroplasty. J Bone Joint Surg Br. 1996, 78 (4): 555-558.PubMed Aarons H, Hall G, Hughes S, Salmon P: Short-Term Recovery From Hip and Knee Arthroplasty. J Bone Joint Surg Br. 1996, 78 (4): 555-558.PubMed
41.
go back to reference Walker DJ, Heslop PS, Chandler C, Pinder IM: Measured ambulation and self-reported health status following total joint replacement for the osteoarthritic knee. Rheumatology (Oxford). 2002, 41: 755-758. 10.1093/rheumatology/41.7.755.CrossRef Walker DJ, Heslop PS, Chandler C, Pinder IM: Measured ambulation and self-reported health status following total joint replacement for the osteoarthritic knee. Rheumatology (Oxford). 2002, 41: 755-758. 10.1093/rheumatology/41.7.755.CrossRef
42.
go back to reference Guralnik JM, Branch LG, Cummings SR, Curb JD: Physical Performance Measures in Aging Research. Journal of Gerontology: Medical Sciences. 1989, 44 (5): M141-M146.CrossRef Guralnik JM, Branch LG, Cummings SR, Curb JD: Physical Performance Measures in Aging Research. Journal of Gerontology: Medical Sciences. 1989, 44 (5): M141-M146.CrossRef
43.
go back to reference Guralnik JM, Ferrucci L, Pieper CF, Leveille SG, Markides KS, Ostir GV, Studenski S, Berkman LF, Wallace RB: Lower extremity function and subsequent disability: consistency across studies, predictive models, and value of gait speed alone compared with the short physical performance battery. J Gerontol A Biol Sci Med Sci. 2000, 55 (4): M221-M231..CrossRefPubMed Guralnik JM, Ferrucci L, Pieper CF, Leveille SG, Markides KS, Ostir GV, Studenski S, Berkman LF, Wallace RB: Lower extremity function and subsequent disability: consistency across studies, predictive models, and value of gait speed alone compared with the short physical performance battery. J Gerontol A Biol Sci Med Sci. 2000, 55 (4): M221-M231..CrossRefPubMed
44.
go back to reference Steffen TM, Hacker TA, Mollinger L: Age- and gender-related test performance in community-dwelling elderly people: Six-Minute Walk Test, Berg Balance Scale, Timed Up & Go Test, and gait speeds. Phys Ther. 2002, 82 (2): 128-137.PubMed Steffen TM, Hacker TA, Mollinger L: Age- and gender-related test performance in community-dwelling elderly people: Six-Minute Walk Test, Berg Balance Scale, Timed Up & Go Test, and gait speeds. Phys Ther. 2002, 82 (2): 128-137.PubMed
45.
go back to reference Stratford PW: Diagnosing Patient Change: Impact of reassessment interval. Physiother Can. 2000, 52: 225-228. Stratford PW: Diagnosing Patient Change: Impact of reassessment interval. Physiother Can. 2000, 52: 225-228.
46.
go back to reference Kennedy DM, Stratford PW, Pagura SMC, Wessel J, Gollish JD, Woodhouse LJ: Exploring the Factorial Validity and Clinical Interpretability of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Physiother Can. 2003, 55 (3): 160-168.CrossRef Kennedy DM, Stratford PW, Pagura SMC, Wessel J, Gollish JD, Woodhouse LJ: Exploring the Factorial Validity and Clinical Interpretability of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Physiother Can. 2003, 55 (3): 160-168.CrossRef
47.
go back to reference Bryk AS, Raudenbush SW: Application of Hierarchical Linear Models to Assessing Change. Psychol Bull. 1987, 101 (1): 147-158. 10.1037/0033-2909.101.1.147.CrossRef Bryk AS, Raudenbush SW: Application of Hierarchical Linear Models to Assessing Change. Psychol Bull. 1987, 101 (1): 147-158. 10.1037/0033-2909.101.1.147.CrossRef
48.
go back to reference Binkley JM, Stratford P, Lott SA, Riddle D: The Lower Extremity Functional Scale (LEFS): Scale development, measurement properties and clinical application.North American Orthopaedic Rehabilitation Research Network. Phys Ther. 1999, 79: 371-383.PubMed Binkley JM, Stratford P, Lott SA, Riddle D: The Lower Extremity Functional Scale (LEFS): Scale development, measurement properties and clinical application.North American Orthopaedic Rehabilitation Research Network. Phys Ther. 1999, 79: 371-383.PubMed
Metadata
Title
Modeling early recovery of physical function following hip and knee arthroplasty
Authors
Deborah M Kennedy
Paul W Stratford
Steven E Hanna
Jean Wessel
Jeffrey D Gollish
Publication date
01-12-2006
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2006
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-7-100

Other articles of this Issue 1/2006

BMC Musculoskeletal Disorders 1/2006 Go to the issue