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MUSCULOSKELETAL SURGERY
Published in: MUSCULOSKELETAL SURGERY 3/2016

01-12-2016 | Original Article

Proposal of a therapeutic protocol for selected patients with patellofemoral knee osteoarthritis: arthroscopic lateral retinacular release followed by viscosupplementation

Authors: M. Fosco, E. Dagher

Published in: MUSCULOSKELETAL SURGERY | Issue 3/2016

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Abstract

Background

Lateral retinacular release has been demonstrated to reduce articular patellofemoral pressures, while intra-articular injection of hyaluronic acid can improve the biological and rheological knee pathway. We evaluated whether treatment protocol consisting on combination of these two therapies can provide significant symptomatic improvement in patients with patellofemoral osteoarthritis (PFO) and patellar tilt.

Materials and methods

We retrospectively analyzed the clinical and radiological data of 28 knees (25 patients with anterior knee pain) who underwent arthroscopic lateral retinacular release followed by viscosupplementation for isolated patellofemoral osteoarthritis without clinical or radiological signs of patellar instability. Clinical evaluation was performed at a mean follow-up of 32.4 months (range 24–47 months) by an independent surgeon using the Kujala score, visual analog scale (VAS), and patient satisfaction scale. Univariate and multivariate analysis was used to identify best determinants to have a good clinical outcome.

Results

Mean Kujala score improved from 45.8 points before surgery (range 33–65 points) to 82.7 points after treatment protocol (range 52–100 points). VAS improved of 68.5 % from preoperative and all patients except one were satisfied. Linear multiple regression modeling showed that younger age (OR 1.134, 95 % CI 1.018–1.263, p = 0.022) and short time delay between the onset of symptoms and treatment (OR 1.207, 95 % CI 0.982–1.484, p = 0.007) were the best determinants for a good final outcome.

Conclusions

Arthroscopic lateral retinacular release followed by viscosupplementation is an effective treatment protocol for PFO, simple and minimally invasive with respect to other therapeutic options.
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Metadata
Title
Proposal of a therapeutic protocol for selected patients with patellofemoral knee osteoarthritis: arthroscopic lateral retinacular release followed by viscosupplementation
Authors
M. Fosco
E. Dagher
Publication date
01-12-2016
Publisher
Springer Milan
Published in
MUSCULOSKELETAL SURGERY / Issue 3/2016
Print ISSN: 2035-5106
Electronic ISSN: 2035-5114
DOI
https://doi.org/10.1007/s12306-016-0402-7

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