Study: Arthroscopic and open posterior knee capsulotomy are
A Study was conducted to assess the recovery of extension and improvement in functional scores after an arthroscopic or open posterior knee capsulotomy in the setting of an extension deficit.

The inclusion criteria consisted of patients with primary extension deficits?more than 5° who underwent an arthroscopic or open posterior knee capsulotomy. The assessed outcomes were preoperative and postoperative range of motion and functional outcome scores. Randomized controlled trials, cohort studies and case series with a follow-up longer than 6 months were included.

Results:
--Of 226 records identified through database searching, 7 studies were included in the final analysis.

--The outcomes of 107 patients with a mean age of 34.1 years were available.

--In all the included studies, a posterior capsulotomy resulted in the restoration of knee extension to normal or nearly normal values with a significant increase in functional outcome scores.

--No neurovascular complications were reported within the studies.

--Due to the diverse methodology of studies, the direct comparison of arthroscopic versus open approaches was not possible.

--Concerning the risk of bias assessment, the greatest concerns raised the selection of participants among the included studies and the methods of outcome measurement. The certainty of evidence was very low according to the GRADE.

In short, both arthroscopic as well as open post-knee capsulotomy leads to normal or almost normal knee extension restoration and considerable functional outcomes improved.

Source: https://link.springer.com/article/10.1007/s00167-021-06634-4
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