[The efficacy of low- and high-molecular-weight hyaluronic acid applications after arthroscopic debridement in patients with osteoarthritis of the knee].

We evaluated the efficacy of viscosupplementation with low- or high-molecular-weight hyaluronic acid (HA) preparations following arthroscopic debridement (AD) in patients with osteoarthritis of the knee.
The study included 45 patients (19 men, 26 women; mean age 53 years; range 41 to 66 years) with Kellgren-Lawrence grade 2-3 osteoarthritis of the knee. Following AD, the patients were randomized to three groups to receive three intra-articular injections of 2 ml hylan G-F 20 (Synvisc, n=16), five intra-articular injections of 2 ml sodium hyaluronate (Hyalgan, n=14), and no injections (controls, n=15). Injections were administered at one-week intervals. All the patients were evaluated with pain, stiffness, and functional capacity scores of the WOMAC (Western Ontario and McMaster Universities) osteoarthritis index before and 6 and 12 months after AD.
Two patients and three patients complained of transient pain in Synvisc and Hyalgan groups, respectively. WOMAC scores showed significant decreases in all the groups at 6 and 12 months. There were no significant differences between the three groups with respect to improvement in WOMAC scores at 6 months. However, compared to the control group, differences between pre- and posttreatment scores at 12 months were significantly greater in the Synvisc (p=0.004) and Hyalgan (p=0.003) groups, with no significant difference between the two HA groups (p>0.05).
Our findings show that AD is beneficial in osteoarthritis of the knee in patients with appropriate indications, viscosupplementation increases the efficacy of treatment, and that low- and high-molecular-weight HA preparations have similar efficacy.
AuthorsTolga Atay, Ahmet Aslan, Metin Lütfi Baydar, Berit Ceylan, Barbaros Baykal, Vecihi Kirdemir
JournalActa orthopaedica et traumatologica turcica (Acta Orthop Traumatol Turc) 2008 Aug-Oct Vol. 42 Issue 4 Pg. 228-33 ISSN: 1017-995X [Print] Turkey
Vernacular TitleGonartrozlu hastalarda artroskopik debridman sonrasi düşük ve yüksek molekül ağirlikli hiyalüronik asit uygulamalarinin etkinliği.
PMID19060515 (Publication Type: English Abstract, Journal Article, Randomized Controlled Trial)
Chemical References
  • Biocompatible Materials
  • Viscosupplements
  • hylan
  • Hyaluronic Acid
  • Adult
  • Aged
  • Arthroscopy (methods)
  • Biocompatible Materials (administration & dosage, chemistry, therapeutic use)
  • Debridement
  • Female
  • Humans
  • Hyaluronic Acid (administration & dosage, analogs & derivatives, chemistry, therapeutic use)
  • Male
  • Middle Aged
  • Molecular Weight
  • Osteoarthritis, Knee (drug therapy, pathology, surgery)
  • Pain (epidemiology)
  • Pain Measurement
  • Prospective Studies
  • Severity of Illness Index
  • Treatment Outcome
  • Viscosupplementation
  • Viscosupplements (administration & dosage, chemistry, therapeutic use)

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