Knee function after intra-articular hydrocortisone

Area of Science:

• Rheumatology
• Orthopedics
• Pharmacology

Background:

• Rheumatoid synovitis causes significant knee joint dysfunction and pain.
• Intra-articular corticosteroid injections are a common treatment modality.
• Objective assessment of treatment efficacy is crucial for patient management.

Purpose of the Study:

• To objectively assess the effect of intra-articular hydrocortisone on knee function in rheumatoid synovitis.
• To compare the efficacy of hydrocortisone against intra-articular saline injections.
• To evaluate the time course of functional and symptomatic improvement.

Main Methods:

• A single-blind study involving 12 patients with rheumatoid synovitis.
• Objective assessment of knee flexion range during walking using an electrogoniometer.
• Comparison of hydrocortisone injections with intra-articular saline placebo.

Main Results:

• Intra-articular hydrocortisone significantly improved knee flexion range, with some patients achieving normal levels.
• The beneficial effects on knee flexion were maintained for up to eight weeks.
• Functional improvements were observed to occur more slowly than pain relief.

Conclusions:

• Intra-articular hydrocortisone provides significant symptomatic and functional benefits for knees affected by rheumatoid synovitis.
• The differential rate of improvement in pain versus function has implications for anti-inflammatory drug evaluation.
• Electrogoniometry offers an objective method for assessing treatment outcomes in inflammatory arthritis.