Altered loading during walking and sit‐to‐stand is affected by quadriceps weakness after total knee arthroplasty

Mizner, Ryan L.; Snyder‐Mackler, Lynn

doi:10.1016/j.orthres.2005.01.021

Cited by 302 publications

(279 citation statements)

References 28 publications

Supporting

Mentioning

247

Contrasting

Order By: Relevance

“…Lower scores on tests of physical function persist at least 1 year after surgery [19,21,32] with greater dysfunction during greater strength-demanding activities such as stair climbing [4,6,12,18,32] and sit-to-stand transfers [18,31]. Tests that measure functional performance have a low correlation with perceived function when self-reported on outcome questionnaires [23].…”

Section: Introductionmentioning

confidence: 99%

The Chitranjan Ranawat Award: The Nonoperated Knee Predicts Function 3 Years after Unilateral Total Knee Arthroplasty

Farquhar

Snyder‐Mackler

2010

Clinical Orthopaedics &Amp; Related Research

Self Cite

View full text Add to dashboard Cite

The long-term functional abilities of patients after a unilateral total knee arthroplasty (TKA) are influenced by the status of the nonoperated knee at the time of the TKA. We hypothesized that in the 3 years after TKA, the nonoperated limb would become more painful, and the quadriceps muscles would weaken; pain and strength would influence performance on functional testing by 3 years after TKA. Healthy control subjects were tested over the same time interval; we hypothesized the controls would also decline in strength and function over time. Individuals with unilateral knee pain (less than 4/10 on a verbal analog scale) were recruited preoperatively. We tested patients 1, 2, and 3 years after TKA to determine changes in strength, self-report outcome measures, and performance on a stair climbing test and the 6-minute walk test. Control subjects without osteoarthritis were tested twice, 2 years apart. The nonoperated limb of patients with TKA weakened from 1 to 2 years, and further weakened from 2 to 3 years after TKA; by 3 years after TKA, the nonoperated limb was more painful compared to the operated limb. Three years after TKA, nonoperated knee pain contributed 44% of the variability in the 6-minute walk and 33% of the variability in the stair climbing test. Patients with TKA were weaker, slower, and had lower self-report outcome measures compared with control subjects at both time intervals. Control subjects also weakened over time, yet were stable on self-report outcome measures and the 6 minute walk test. Weakening of the quadriceps muscles in all participants represents changes due to ageing; however on average the nonoperated limb weakened over time, possibly representing not only changes resulting from aging, but progression of osteoarthrosis in some patients with unilateral TKA.

show abstract

Section: Introductionmentioning

confidence: 99%

The Chitranjan Ranawat Award: The Nonoperated Knee Predicts Function 3 Years after Unilateral Total Knee Arthroplasty

Farquhar

Snyder‐Mackler

2010

Clinical Orthopaedics &Amp; Related Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…A therapist may find that patients' perception of their ability to perform an independent chair rise, which they have attempted multiple times following surgery while hospitalized, in the clinic, and at home, may be a practical way to estimate patient readiness to safely begin stair-climbing activities. Several reports have related chair-rise performance to knee extensor muscle-force-generating ability [16][17][18][19][20]. Tasks such as the chair rise have minimal injury risk if not performed correctly, while unsafe stair-climbing has comparatively greater injury risk, particularly when patients initially attempt stair descent.…”

Section: Introductionmentioning

confidence: 99%

Self-reported chair-rise ability relates to stair-climbing readiness of total knee arthroplasty patients: A pilot study

Nyland

Frost²,

Quesada³

et al. 2007

JRRD

View full text Add to dashboard Cite

Abstract-Following total knee arthroplasty (TKA), physical therapists must evaluate patient readiness to safely begin stairclimbing. Physical therapists might find self-reported chair-rise ability useful in determining stair-climbing readiness of patients. We grouped 31 subjects who were at approximately 3.6 weeks post-TKA by chair-rise ability (group 1 = "Because of my knee, I can only rise from a chair if I use my hands and arms to assist," group 2 = "I have pain when rising from the seated position, but it does not affect my ability to rise from the seated position," and group 3 = "My knee does not affect my ability to rise from a chair"). Next, we determined time of stair-climbing ascent and descent, number of chair rises in 30 seconds, isokinetic quadriceps femoris and hamstring muscle group strength, and self-reported knee function survey scores. Groups 3 and 2 descended stairs more quickly than group 1; group 3 displayed greater involved and noninvolved knee extensor torque per body weight than group 1 or 2 and had superior self-reported knee function scores than group 1. Patient perception of chair-rise ability at approximately 3.6 weeks post-TKA is useful in helping physical therapists determine patient readiness to safely begin stair-climbing.

show abstract

“…Most published studies have mainly focused on function recovery after total knee arthroplasty (18,(27)(28)(29) or the effect of age on STS movement performance (20,21,26) . Jevsevar et al (18) found that patients after TKA had a smaller range of knee flexion and lower maximum flexion moments than healthy subjects.…”

Section: Discussionmentioning

confidence: 99%

Analysis of multiple waveforms by means of functional principal component analysis: normal versus pathological patterns in sit-to-stand movement

Epifanio

Ávila

Page

et al. 2008

Med Biol Eng Comput

View full text Add to dashboard Cite

This paper presents an application of Functional Principal Component Analysis (FPCA) to describe inter-subject variability of multiple waveforms. This technique was applied to the study of sit-to-stand movement in two groups of people, osteoarthritic patients and healthy subjects.Although STS movement has not been much applied to the study of knee osteoarthritis, it can provide relevant information about the effect of osteoarthritis disease on knee joint function.Two waveforms, knee flexion angle and flexion moment, were simultaneously analysed. Instead of using the common multivariate approach we used the functional one, which allows working with continuous functions without neither discretization nor time scale normalization.The results show that time-scale normalization can alter the FPCA solution. Furthermore, FPCA presents a better discriminatory power compared to the classical multivariate approach. Then, this technique can be applied as a functional assessment tool, allowing the identification of relevant variables to discriminate heterogeneous groups, such as healthy and pathological subjects.

show abstract

Altered loading during walking and sit‐to‐stand is affected by quadriceps weakness after total knee arthroplasty

Cited by 302 publications

References 28 publications

The Chitranjan Ranawat Award: The Nonoperated Knee Predicts Function 3 Years after Unilateral Total Knee Arthroplasty

The Chitranjan Ranawat Award: The Nonoperated Knee Predicts Function 3 Years after Unilateral Total Knee Arthroplasty

Self-reported chair-rise ability relates to stair-climbing readiness of total knee arthroplasty patients: A pilot study

Analysis of multiple waveforms by means of functional principal component analysis: normal versus pathological patterns in sit-to-stand movement

Contact Info

Product

Resources

About