Skip to content

Cross-linked Hyaluronic Acid in Knee Osteoarthritis

Clinical Superiority of Cross-linked Hyaluronic Acid in Knee Osteoarthritis: Sustained Efficacy on Pain and Function

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07241442
Enrollment
88
Registered
2025-11-21
Start date
2021-01-02
Completion date
2025-05-31
Last updated
2026-02-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Knee Osteoarthritis (Knee OA)

Keywords

Knee Osteoarthritis, Cross-linked Hyaluronic Acid, Recreational Athletes, Intra-articular Injection, WOMAC

Brief summary

Knee Osteoarthritis (Knee OA) leads to pain and loss of function, especially in recreational athletes. While hyaluronic acid (HA) injections are a common part of conservative treatment, comparative data on the efficacy of straight-chain (ST-HA) versus cross-linked (CL-HA) formulations remain limited. Therefore, the aim of this study was to compare the 6-month efficacy of a single dose of CL-HA versus two doses of ST-HA regarding pain, stiffness, and joint function in recreational athletes aged 50-70 with Kellgren-Lawrence grade 2-3 Knee OA refractory to pharmacological treatment.

Detailed description

This retrospective observational study included 88 recreational athletes (CL-HA: n=44, ST-HA: n=44). All participants received either a single dose of CL-HA or two doses of ST-HA administered 4 weeks apart. Patients were comparatively evaluated pre-treatment and at 1, 3, and 6 months post-treatment using the WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) and VAS scores.

Interventions

DRUGStraight-bonded hyaluronic acid

Straight-bonded HA injection was applied in 2 doses, 4 weeks apart.

Cross-linked HA was applied as a single dose to the knee via the anterolateral approach.

Sponsors

Istanbul Medipol University Hospital
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
50 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

Inclusion criteria: Recreational athletes aged 50-70 years; participants must not have received any injections or undergone physical therapy or rehabilitation in the last 3 months; and symptomatic cases of Kellgren-Lawrence stage 2-3 knee osteoarthritis and failure of pharmacological treatment.

Exclusion criteria

Inflammatory disease, active rheumatic disease, malignancy, bleeding diathesis, peripheral neuropathy, BMI \>30, grade 4 gonarthrosis, regular NSAID use, previous knee surgery, local infection at the procedure site, corticosteroid injection at the procedure site within the last 3 months, systemic corticosteroid use within the last 2 weeks, immunosuppressant use or immunodeficiency within the last 6 weeks, and any local or systemic osteoarthritis-related treatments (therapeutic exercises, physical therapy, other injections, NSAIDs, etc.) within the last 6 months.

Design outcomes

Primary

MeasureTime frameDescription
Patients were comparatively evaluated pre-treatment and at 1, 3, and 6 months post-treatment using the WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) score.Patients were comparatively evaluated pre-treatment and at 1, 3, and 6 months post-treatmentMinimal value is 0, while maximum value is 96.

Secondary

MeasureTime frameDescription
Patients were comparatively evaluated pre-treatment and at 1, 3, and 6 months post-treatment using the VAS score.Patients were comparatively evaluated pre-treatment and at 1, 3, and 6 months post-treatmentMinimal value is 0, while maximum value is 10.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026