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DiscussionDiclofenac topical gel (brand Voltaren) helps postpone TKR
Joint Replacements | Last Active: Jun 28 3:29pm | Replies (7)Comment receiving replies
Replies to "How effective is Voltaren on the lower back. It seems it would be difficult to apply..."
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@jackiet Read online, but my understanding is that the diclofenac gel only penetrates a limited depth. So it is not considered useful for hip arthritis pain for example. I do not know about back pain, but here is an example article discussing how deep it has an effect.
Skin penetration and tissue permeation after topical administration of diclofenac
https://www.tandfonline.com/doi/full/10.1080/03007995.2017.1352497
EXCERPT: "... diclofenac has been shown to penetrate to a depth of around 3–4 mm ..."