Local anti-inflammatory therapy for osteoarthritis with high comorbidity
Osteoarthritis (OA) is a widespread disease, the leading symptom of which is pain in the load-bearing joints, and the incidence increases with age. Many patients with OA have several comorbidities, such as arterial hypertension, coronary heart disease, diabetes mellitus, gastric and duodenal ulcers. Currently, there are different approaches to the treatment of OA with and without comorbidity. In particular, oral non-steroidal anti-inflammatory drugs (NSAIDs) are not recommended for OA with high comorbidity. The literature review discusses the prospects and popularity of the use of local forms of NSAIDs associated with their equal analgesic efficacy relative to oral drugs, but with a smaller number of adverse events. Data on transcutaneous forms of diclofenac are analyzed, which can provide at least oral equivalent analgesia, improved physical function and reduced stiffness in osteoarthritis of the hands and knee joints, while showing fewer systemic adverse events. This feature of topical NSAIDs allows them to be considered as an effective first-line treatment option, especially in elderly patients and those with severe comorbidity. Topical medications containing diclofenac as the main active ingredient are popular among both patients and doctors, and their use has an extensive evidence base. Diclofenac ethylenediamine salt has advantages over sodium salt in its penetrating properties, and the form of an emulsion gel containing a hydrophobic phase that slows down the drying of the substance applied to the skin provides ease of use and improves the consumer properties of agents for local antiinflammatory therapy of osteoarthritis.