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Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews [Internet]. York (UK): Centre for Reviews and Dissemination (UK); 1995-.

Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews [Internet].

Clinical effectiveness of knee rehabilitation techniques and implications for a self-care treatment model

K Button, AS Iqbal, RH Letchford, and RW van Deursen.

Review published: 2012.

CRD summary

This review of the effectiveness of knee rehabilitation interventions concluded that most of the existing evidence focused on exercise and showed positive outcomes overall. The authors' conclusion reflects the evidence but may not be reliable due to some limitations in review methods.

Authors' objectives

To evaluate the clinical effectiveness of knee rehabilitation techniques categorised according to the International Classification of Functioning and Disability (ICF) domains in patients with knee conditions including osteoarthritis, patellofemoral joint pain, acute ligament injuries and postoperative rehabilitation

Searching

MEDLINE, CINAHL, AMED, EMBASE and The Cochrane Library were searched for studies published in English between 1996 and January 2010. Search terms were reported.

Study selection

Randomised controlled trials, clinical trials, comparative studies and pre- and post- test designs of interventions for rehabilitation after knee pathology or surgery that reported use of activities and participation, measured with knee-specific patient-rated tools, were eligible for inclusion. Studies of pharmacological, surgical, bracing, orthotic and acupuncture treatments; extra-articular knee pathology or pathology secondary to other conditions; inpatient settings; or of a single treatment session were excluded.

Included studies evaluated open and closed kinetic chain strength training, strength training, multi-component exercise training, water and land-based exercises, functional rehabilitation programmes, other exercise-based rehabilitation programmes, mixed modality physiotherapy, manual therapy, electrotherapy and taping. The conditions of the participants varied and included: osteoarthritis, patellofemoral joint pain, anterior cruciate ligament reconstruction and total knee replacement. A wide range of outcome measures were reported and these are summarised in a table in the paper.

The authors did not report how many reviewers selected the studies.

Assessment of study quality

Study quality was assessed using a 14-item questionnaire compiled from the Critical Appraisal Skills Programme Tool, CONSORT statement and the tool from the Cochrane Bone Joint and Muscle Trauma Group. The maximum possible score was 28. Any study that scored below 50% was excluded. One reviewer performed the assessment and it was checked by a second reviewer.

Data extraction

Details of study design, interventions and outcomes were extracted; outcomes were grouped into body functions and structure, activities and participation according to the ICF domain. The frequency of use of each type of outcome was calculated. The authors did not report how many reviewers performed the data extraction.

Methods of synthesis

Results were presented as a narrative, grouped by intervention.

Results of the review

Forty-two studies were included; 30 evaluated exercise interventions (1,765 participants), six evaluated mixed modality physiotherapy (546 participants) and six evaluated manual therapy, electrotherapy and taping (399 participants). The studies had some flaws: lack of a no-treatment control group; a control intervention that was too similar to the intervention under evaluation; lack of randomisation and blinding; small sample sizes; high drop-out rates and lack of long-term follow-up.

Exercise (30 studies)

Quality scores ranged from 14 to 24 out of 28. One study found increased laxity after the early implementation of open kinetic chain exercise after hamstring anterior cruciate ligament and four studies found that these exercise are safe following patella tendon bone anterior cruciate ligament reconstruction. Strengthening exercises showed improvements in outcomes for all ICF domains, especially eccentric training which showed statistically significant improvements in two studies. Multi-component exercise programmes showed improvements in patients with osteoarthritis, and land and water based exercises were equally effective in osteoarthritis and after total knee replacement. A walking and targeting foot exercise programme showed significant improvements in body function and structures, and activities in patients with osteoarthritis. A functional rehabilitation programme did not show any benefits over standard care in patients after total knee replacement.

Mixed modality physiotherapy (six studies)

The quality of these studies was considered good with scores of between 17 and 19 out of 28. Mixed modality physiotherapy regimes were found to be more effective than general quadriceps strengthening, no-treatment control or placebo for body function and structures and activities outcomes in patellofemoral joint pain (three studies). No benefits were seen in three other studies of other knee conditions.

Manual therapy, electrotherapy and taping (six studies)

Quality scores ranged between 15 and 21 out of 28. Short-term benefits of manual therapy for patients with patellofemoral joint pain and osteoarthritis were shown for body function and structures, and activities. Short-term functional improvements for patients with anterior cruciate ligament reconstruction using electrical muscle stimulation combined with closed kinetic chain exercises were also shown but there were no long-term benefits. Patellofemoral joint taping was shown to significantly reduce osteoarthritic pain.

Authors' conclusions

Most evidence evaluating the effectiveness of knee rehabilitation interventions focused on exercise and showed positive outcomes overall.

CRD commentary

This review had a clear research question and specified some inclusion criteria, but not in enough detail to enable independent researchers to repeat the review. Five databases were searched but the search was limited by language and no attempts were made to locate unpublished research which increased the chance of language and publication bias. Study quality was assessed by one person and checked by a second but it was unclear if the study selection and data extraction were performed in the same way so the risk of mistakes could not be ruled out. The narrative synthesis was appropriate given the differences between the studies and the quality of the evidence was discussed, but there was a lack of evidence for some outcomes.

The authors' conclusion reflects the evidence but may not be reliable due to some limitations in review methods.

Implications of the review for practice and research

Practice: The authors stated that it was difficult to give specific exercise recommendations because of the range of exercise programmes with different goals and outcomes.

Research: The authors stated that further research is needed to develop the content and delivery modes of exercise, which defines standard care and includes appropriate participation outcome measures.

Funding

The Research Capacity Building Collaboration, Wales.

Bibliographic details

Button K, Iqbal AS, Letchford RH, van Deursen RW. Clinical effectiveness of knee rehabilitation techniques and implications for a self-care treatment model. Physiotherapy 2012; 98(4): 287-299. [PubMed: 23122433]

PubMedID

23122433

Indexing Status

Subject indexing assigned by NLM

MeSH

Evidence-Based Practice /methods /standards; Humans; Knee Injuries /rehabilitation; Musculoskeletal Diseases /rehabilitation; Physical Therapy Modalities /standards; Practice Guidelines as Topic; Self Care /methods /standards; Treatment Outcome

AccessionNumber

12012055743

Date bibliographic record published

21/01/2013

Date abstract record published

09/05/2013

Record Status

This is a critical abstract of a systematic review that meets the criteria for inclusion on DARE. Each critical abstract contains a brief summary of the review methods, results and conclusions followed by a detailed critical assessment on the reliability of the review and the conclusions drawn.

CRD has determined that this article meets the DARE scientific quality criteria for a systematic review.

Copyright © 2014 University of York.

PMID: 23122433

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