Intra-Articular Therapies for Hip Osteoarthritis

Intra-articular therapies for hip osteoarthritis aim to deliver pharmacological or biological agents directly into the joint space to alleviate pain, improve function and potentially modify disease processes. Established approaches include corticosteroid injections for rapid anti-inflammatory relief and viscosupplementation with hyaluronic acid to restore synovial fluid viscosity and joint lubrication. More recent innovations explore orthobiologic solutions such as platelet-rich plasma and mesenchymal stem cells, which seek to harness growth factors and regenerative potential. Experimental strategies have even incorporated metallic microparticles to modulate local inflammatory and proteomic profiles. Image guidance, most commonly ultrasound or fluoroscopy, is employed to ensure accurate needle placement and minimise complications. Collectively, these therapies offer non-surgical options for symptom management and may delay or reduce the need for arthroplasty in selected patients.

Research from Nature Portfolio

A pilot clinical study evaluated intra-articular injection of metallic gold microparticles suspended in hyaluronic acid in patients with moderate to severe hip osteoarthritis. Over a two-year follow-up, participants reported marked reductions in pain and improvements in stiffness and physical function as measured by the Western Ontario and McMaster Universities Arthritis Index. Early analysis of synovial fluid and serum revealed significant shifts in proteomic biomarkers eight weeks post-injection, suggesting a sustained biological effect. Safety was acceptable, with no serious device-related adverse events. These findings establish proof of concept and support a future placebo-controlled randomised trial of gold microparticles combined with hyaluronic acid in hip osteoarthritis.

Intra-Articular Therapies for Hip Osteoarthritis publication trend

The graph below shows the total number of articles in intra-articular therapies for hip osteoarthritis across all publications each year (not limited to Nature Index journals).

Technical terms

Intra-articular injection: Delivery of therapeutic agents directly into the joint cavity, often under image guidance to ensure accurate placement.

Hyaluronic acid (HA): A naturally occurring polysaccharide in synovial fluid used in viscosupplementation to enhance lubrication and shock absorption.

Platelet-rich plasma (PRP): Autologous plasma fraction enriched in platelets and growth factors, intended to promote tissue repair and modulate inflammation.

Corticosteroids: Anti-inflammatory agents injected locally to reduce synovial inflammation and pain in osteoarthritis.

Western Ontario and McMaster Universities Arthritis Index (WOMAC): A validated questionnaire assessing pain, stiffness and physical function in osteoarthritis research.

Synovitis: Inflammation of the synovial membrane characterized by fluid accumulation and pain, detectable by ultrasound or MRI.

References

1. Intraarticular gold microparticles using hyaluronic acid as the carrier for hip osteoarthritis. A 2-year follow-up pilot study. Scientific Reports (2024).
2. Clinical effectiveness of one ultrasound guided intra-articular corticosteroid and local anaesthetic injection in addition to advice and education for hip osteoarthritis (HIT trial): single blind, parallel group, three arm, randomised controlled trial. The BMJ (2022).
3. Comparison between the effects of ultrasound guided intra-articular injections of platelet-rich plasma (PRP), high molecular weight hyaluronic acid, and their combination in hip osteoarthritis: a randomized clinical trial. BMC Musculoskeletal Disorders (2022).
4. Intra‐Articular Steroid Injection for Patients with Hip Osteoarthritis: A Systematic Review and Meta‐Analysis. BioMed Research International (2020).