Strong recommendation against knee arthroscopy

Knee arthroscopy is strongly recommended against in almost all patients with degenerative knee disease,  a panel of international experts report in The BMJ. A systematic review concluded it that does not, on average, result in a lasting improvement in pain or function

ABSTRACT

Objective: To determine the effects and complications of arthroscopic surgery compared with conservative management strategies in patients with degenerative knee disease.

Design: Systematic review.

Main outcome measures: Pain, function, adverseMevents.

Data sources: MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials (CENTRAL), Google Scholar and Open Grey up to August 2016.

Eligibility criteria: For effects, randomised clinical trials (RCTs) comparing arthroscopic surgery with a conservative management strategy (including sham surgery) in patients with degenerative knee disease. For complications, RCTs and observational studies.

Review methods: Two reviewers independently extracted data and assessed risk of bias for patient-important outcomes. A parallel guideline committee (BMJ Rapid Recommendations) provided input on the design and interpretation of the systematic review, including selection of patient-important outcomes. We used the GRADE approach to rate the certainty (quality) of the evidence.

Results: We included 13 RCTs and 12 observational studies. With respect to pain, the review identified high-certainty evidence that knee arthroscopy results in a very small reduction in pain up to 3 months (mean difference =5.4 on a 100-point scale, 95% CI 2.0 to 8.8) and very small or no pain reduction up to 2 years (mean difference =3.1, 95% CI −0.2 to 6.4) when compared with conservative management. With respect to function, the review identified moderate-certainty evidence that knee arthroscopy results in a very small improvement in the short term (mean difference =4.9 on a 100-point scale,

95% CI 1.5 to 8.4) and very small or no improved function up to 2 years (mean difference =3.2, 95% CI −0.5 to 6.8). Alternative presentations of magnitude of effect, and associated sensitivity

analyses, were consistent with the findings of the primary analysis. Low-quality evidence suggested a very low probability of serious complications after knee arthroscopy.

Conclusions: Over the long term, patients who undergo knee arthroscopy versus those who receivE conservative management strategies do not have important benefits in pain or function.’/

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