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Open labeled clinical research on utility of pentosan polysulfate(pentosan) to osteoarthritis of the knee

Open labeled clinical research on utility of pentosan polysulfate(pentosan) to osteoarthritis of the knee - Clinical research on utility of pentosan to knee OA

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000002790
Enrollment
20
Registered
2009-11-22
Start date
2005-12-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

almost healthy with mild osteoarthritis of the knee

Interventions

As a utilized agents, Pentosanpolysulfat SP 54, used in this study, was manufactured and supplied in sterile injectable vials (pentosan 100mg/ml) by bene-Arzneimittel GmbH, Munich, Germany. The trea

Sponsors

Pentosan Research Society
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Symptomatic patients with primary OA of the knee affecting the tibio-femoral and/or the patello-femoral compartment were consulted by senior orthopaedic surgeons who discussed their preferred management strategy. The radiographic indications of OA were grades 1 to 2 in Koshino's classification and stages 1 to 3a in the Hokkaido University stage grading system, changing into the Kellgren-Lawrence Grading System for OA, 1957, grades 1 to 2.

Exclusion criteria

Exclusion criteria: 1. Patients who received previous intra-articular corticosteroid or another drug injection in the knee joint within the previous 3 months. 2. Patients who had other lower-extremity musculoskeletal disability or pain. 3. Patients who had pain exceeding 45 mm on a 100-mm visual analogue scale (VAS, 0- 100, 100 as worst pain) immediately following walking for 50 m. 4. Patients who had any bleeding tendency with anti-coagulant drugs (besides aspirin) having gastric or duodenal ulcer or with suspicion of alimentary tract bleeding. 5. Patients who had other severe disease or handicap (for example (i.e.), liver, kidney, and bone marrow). 6. Patients who had a past history of drug allergy. 7. Patients who were pregnant or were breastfeeding. 8. Patients who had difficulty providing us with information. 9. Patients who had difficulty with the informed consent. About using NSAIDs, the patients were not eliminated if they could have a two-week wash-out period before entering into this study.

Design outcomes

Primary

MeasureTime frame
All patients were prospectively reviewed at entry and at weeks 1, 2, 3, 4, 8, 12, 16, 24, and 52 with a physical examination of the knee and VAS for stiffness, pain at rest or at walking, with ROM exercises, and with walking up and down stairs. The primary outcome variable in the knee pain was measured by VAS at each visit. Blood and urine were checked including usual biochemical test and coagulation test. Weight bearing radiographs were reviewed at the baseline and at the end of study to grade the degree of OA.

Secondary

MeasureTime frame
To check the change of the metabolism in the cartilage, procollagen new synthesis (CPII) and degradation of type II Collagen (C2C) in the blood was measured with an ELISA kit, in accordance with the manufacturer's instructions, and, in addition,WOMAC 3.1 (Likert) was used to measure secondary effectiveness (pain, stiffness, physical function, social function, emotional function).

Countries

Japan

Contacts

Public ContactKenji Kumagai, M.D., PhD

Nagasaki University Hospital Orthopedic Surgery

kenjikum@nagasaki-u.ac.jp095-819-7321

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026