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Knee ChondropathyPRP-012NCT02135367

Platelet-rich Plasma (PRP) vs Viscosupplementation for the Treatment of Early Knee Articular Degenerative Pathology

A study testing PRP in people with Knee Chondropathy and Knee Early Osteoarthritis, run by Istituto Ortopedico Rizzoli at 1 site in Italy.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The investigators hypothesized that intra-articular injections of Platelet-rich Plasma (PRP) to treat knee degenerative articular cartilage pathology could determine pain relief and recovery of knee function with overall clinical outcome comparable or even better than viscosupplementation, which is a common injective… Read more about this study

Who is it for?
Ages 18 to 55 years
Conditions the study is for
Knee Chondropathy, Knee Early Osteoarthritis
What is being tested?
PRP
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
185 participants
Where
1 siteItaly
Study dates
Jan 2013to 30 Apr 2018
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • age ranging from 18 to 55
  • patients affected by knee articular degenerative pathology with history of chronic (for at least 4 months) pain or swelling;
  • imaging findings of degenerative changes of the joint (Kellgren Lawrence 0 to 2 at X-ray evaluation).

Who cannot join

  • age > 55 years;
  • Kellgren-Lawrence score at X-ray evaluation > 2;
  • major axial deviation (varus >5° , valgus > 5°),
  • systemic disorders such as diabetes, rheumatoid arthritis, haematological diseases (coagulopathy), severe cardiovascular diseases, infections, immunodepression;
  • patients in therapy with anticoagulants or antiaggregants;
  • use of NSAIDs in the 5 days before blood donation;
Show all 9Show fewer
  • previous intra-articular injections in the past 6 months before blood donation;
  • previous knee surgery in the past 12 months before blood donation;
  • patients with Hb values < 11 g/dl and platelet values < 150,000/mmc

Trial locations and contacts

1 site in 1 country.

Italy1 site
  • II Orthopaedic Clinic, Rizzoli Orthopaedic Institute

    Bologna, Emilia-Romagna, 40136

Other trials in Italy

About this study

Official title: Platelet-rich Plasma (PRP) vs Viscosupplementation for the Treatment of Early Knee Articular Degenerative Pathology: a Randomized Double-blind Controlled Trial

The investigators hypothesized that intra-articular injections of Platelet-rich Plasma (PRP) to treat knee degenerative articular cartilage pathology could determine pain relief and recovery of knee function with overall clinical outcome comparable or even better than viscosupplementation, which is a common injective approach applied in this kind of pathology. To this purpose the investigators designed a double blind randomized controlled trial comparing PRP vs viscosupplementation.

A power analysis has been performed for the primary endpoint of IKDC subjective score improvement at the 12-month follow-up for PRP. From a pilot study, a standard deviation of 15.2 points was found. With an alpha error of 0.05, a beta error of 0.2 and a minimal clinically significant difference of 6.7 points corresponding at 1/3 of the documented mean improvement, the minimum sample size was 83 for each group. Considering a possible drop out of 15%, 96 patients per group are required for total 192 patients, selected according to well-defined inclusion criteria (see 'Eligibility criteria' section). Patients are then assigned to two different treatment groups, according to a randomization list. The first group of treatment consists of three weekly intra-articular injections of autologous PRP obtained with the following procedure: a 150-ml autologous venous blood sample undergoes 2 centrifugations (the first at 1480 rpm for 6 minutes to separate erythrocytes, and a second at 3400 rpm for 15 minutes to concentrate platelets) to produced 20 ml of PRP. This unit of PRP is then divided into 4 small units of 5 ml each. One unit is sent to the laboratory for analysis of platelet concentration and for a quality test, 3 units are stored at -30° C.

Read more

The second treatment group consists of patients receiving three weekly injections of hyaluronic acid (Hyalubrix 30 mg/2ml, Fidia Farmaceutici Spa, Italy;Molecular Weight: 1500 kDa).

To guarantee the blinding of the patients, all of them undergo blood harvesting to obtain autologous PRP which will be used only in half of them, according to the aforementioned randomization list. One week after the PRP production, the injective treatment starts, with 3 weekly injections of PRP or HA. At the moment of the injection the syringe is properly covered to prevent the patient from discovering the substance he was receiving. After the injection, patients are sent home with instructions to limit the use of the leg for at least 24 h and to use cold therapy/ice on the affected area to relieve pain. During this period, the use of non-steroidal medication is forbidden.

Patients are prospectively evaluated basally and at 2, 6, and 12 months of follow-up using clinical subjective scores and objective parameters to determine clinical outcome (see 'Outcome measure' section). Patient satisfaction and adverse events will be also reported. All the clinical evaluations are performed by a medical staff not involved in the injective procedure, in order to keep the study double blinded. At the end of the study, the nature of the injected substance is revealed to the patients.

Read the detailed description

Current research is investigating new methods for stimulating repair or replacing damaged cartilage. In particular, the most recent knowledge regarding tissue biology highlights a complex regulation of growth factors (GFs) for the normal tissue structure and the reaction to tissue damage. The influence of GFs on cartilage repair is now widely investigated in vitro and in vivo. Platelet Rich Plasma (PRP) is a simple, low- cost and minimally- invasive method that allows one to obtain a natural concentrate of autologous GFs from the blood, and it is increasingly applied in the clinical practice to treat knee degenerative pathology, such as chondropathy and early OA. The biological rational of PRP is that platelets contain storage pools of GFs, cytokines, chemokines and many other mediators.Although its widespread application, there are no high level studies in the literature to demonstrate the real efficacy of PRP. In fact, at the present moment, to our knowledge there is no published randomized controlled trial comparing PRP with other conservative treatments commonly used for knee OA.

The investigators hypothesized that intra-articular injections of PRP to treat knee degenerative articular cartilage pathology could determine pain relief and recovery of knee function with overall clinical outcome comparable or even better than viscosupplementation, which is a common injective approach applied in this kind of pathology. To this purpose the investigators designed a double blind randomized controlled trial comparing PRP vs viscosupplementation.

A power analysis has been performed for the primary endpoint of IKDC subjective score improvement at the 12-month follow-up for PRP. From a pilot study, a standard deviation of 15.2 points was found. With an alpha error of 0.05, a beta error of 0.2 and a minimal clinically significant difference of 6.7 points corresponding at 1/3 of the documented mean improvement, the minimum sample size was 83 for each group. Considering a possible drop out of 15%, 96 patients per group are required for total 192 patients. Patients are then assigned to two different treatment groups, according to a randomization list. The first group of treatment consists of three weekly intra-articular injections of autologous PRP obtained with the following procedure: a 150-ml autologous venous blood sample undergoes 2 centrifugations (the first at 1480 rpm for 6 minutes to separate erythrocytes, and a second at 3400 rpm for 15 minutes to concentrate platelets) to produced 20 ml of PRP. This unit of PRP is then divided into 4 small units of 5 ml each. One unit is sent to the laboratory for analysis of platelet concentration and for a quality test, 3 units are stored at -30° C.

The second treatment group consists of patients receiving three weekly injections of hyaluronic acid (Hyalubrix 30 mg/2ml, Fidia Farmaceutici Spa, Italy;Molecular Weight: 1500 kDa).

To guarantee the blinding of the patients, all of them undergo blood harvesting to obtain autologous PRP which will be used only in half of them, according to the aforementioned randomization list. One week after the PRP production, the injective treatment starts, with 3 weekly injections of PRP or HA. At the moment of the injection the syringe is properly covered to prevent the patient from discovering the substance he was receiving. After the injection, patients are sent home with instructions to limit the use of the leg for at least 24 h and to use cold therapy/ice on the affected area to relieve pain. During this period, the use of non-steroidal medication is forbidden.

Patients are prospectively evaluated basally and at 2, 6, and 12 months of follow-up using IKDC, KOOS, EQ-VAS for general health status, and Tegner scores. Furthermore at basal evaluation and at every follow-up the ROM and the transpatellar circumference of both the index knee and the contralateral one are measured to check if any changes occurred over time. Patient satisfaction and adverse events will be also reported. All the clinical evaluations are performed by a medical staff not involved in the injective procedure, in order to keep the study double blinded. At the end of the study, the nature of the injected substance is revealed to the patients.

Being tested
PRP
Keywords
PRP, growth factors, Viscosupplementation, injections, chondropathy, randomized controlled trial
Medical subject headings
Cartilage Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PRPBiological

    injections of Platelet rich Plasma

Study groups in NCT02135367
Study groupRoleWhat they receive
PRPExperimentalThis group of patients will be treated by three weekly Platelet rich Plasma intra-articular injections in the knee.
Receives: Biological: PRP
HAActive comparatorThis group of patients will be treated by three weekly hyaluronic acid (HA) intra-articular injections in the knee. The HA used is Hyalubrix 30 mg/2ml (Fidia Farmaceutici Spa, Padova, Italy)
Receives: Biological: PRP

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. IKDC (International Knee Documentation Committee) subjective score

    The primary outcome is the difference in IKDC-subjective score at 12 months' follow-up between treatment groups (visco-supplementation vs PRP)

    Measured: 12 months evaluation

Secondary outcomes (6)
  1. VAS (Visual Analogue Scale) for General Health status

    Any inter-group difference in general health status, evaluated by a VAS, will be documented at 2-, 6- and 12-months' follow-up

    Measured: 2-, 6-, 12- months evaluation

  2. KOOS (Knee injury and Osteoarthritis Outcome Score) score

    Any inter-group difference in KOOS Score will be documented at 2-, 6- and 12-months' follow-up

    Measured: 2-, 6-, 12- months evaluation

  3. IKDC objective score

    Any inter-group difference in IKDC objective score will be documented at 2-, 6- and 12-months' follow-up

    Measured: 2-, 6-, 12- months evaluation

  4. Tegner Score

    Any inter-group difference in Tegner Score, will be documented at 2-, 6- and 12-months' follow-up

    Measured: 2-, 6-, 12- months evaluation

  5. Adverse events

    Any eventual adverse events will be documented at any follow-up evaluations of the present study

    Measured: 2-, 6-, 12- months evaluation

  6. Patients' satisfaction

    Patients' satisfaction for the treatment received will be registered at the final 12 months evaluation

    Measured: 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 May 2014 (estimated)
  2. Study startJan 2013
  3. Primary completion30 Apr 2018
  4. Study completion30 Apr 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
185 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02135367
Sponsor's protocol ID
PRP-KNEE 012
Acronym
PRP-012
Status last verified
Aug 2018
First submitted
7 May 2014
Last updated
8 Aug 2018
Results posted
No
Data monitoring committee
Yes

Publications

  • Kon E, Filardo G, Di Martino A, Marcacci M. Platelet-rich plasma (PRP) to treat sports injuries: evidence to support its use. Knee Surg Sports Traumatol Arthrosc. 2011 Apr;19(4):516-27. doi: 10.1007/s00167-010-1306-y. Epub 2010 Nov 17.

    PubMed 21082164
  • Kon E, Buda R, Filardo G, Di Martino A, Timoncini A, Cenacchi A, Fornasari PM, Giannini S, Marcacci M. Platelet-rich plasma: intra-articular knee injections produced favorable results on degenerative cartilage lesions. Knee Surg Sports Traumatol Arthrosc. 2010 Apr;18(4):472-9. doi: 10.1007/s00167-009-0940-8. Epub 2009 Oct 17.

    PubMed 19838676
  • Filardo G, Kon E, Buda R, Timoncini A, Di Martino A, Cenacchi A, Fornasari PM, Giannini S, Marcacci M. Platelet-rich plasma intra-articular knee injections for the treatment of degenerative cartilage lesions and osteoarthritis. Knee Surg Sports Traumatol Arthrosc. 2011 Apr;19(4):528-35. doi: 10.1007/s00167-010-1238-6. Epub 2010 Aug 26.

    PubMed 20740273
  • Patel S, Dhillon MS, Aggarwal S, Marwaha N, Jain A. Treatment with platelet-rich plasma is more effective than placebo for knee osteoarthritis: a prospective, double-blind, randomized trial. Am J Sports Med. 2013 Feb;41(2):356-64. doi: 10.1177/0363546512471299. Epub 2013 Jan 8.

    PubMed 23299850
  • Cerza F, Carni S, Carcangiu A, Di Vavo I, Schiavilla V, Pecora A, De Biasi G, Ciuffreda M. Comparison between hyaluronic acid and platelet-rich plasma, intra-articular infiltration in the treatment of gonarthrosis. Am J Sports Med. 2012 Dec;40(12):2822-7. doi: 10.1177/0363546512461902. Epub 2012 Oct 25.

    PubMed 23104611
  • Filardo G, Kon E, Di Martino A, Di Matteo B, Merli ML, Cenacchi A, Fornasari PM, Marcacci M. Platelet-rich plasma vs hyaluronic acid to treat knee degenerative pathology: study design and preliminary results of a randomized controlled trial. BMC Musculoskelet Disord. 2012 Nov 23;13:229. doi: 10.1186/1471-2474-13-229.

    PubMed 23176112
  • Sanchez M, Fiz N, Azofra J, Usabiaga J, Aduriz Recalde E, Garcia Gutierrez A, Albillos J, Garate R, Aguirre JJ, Padilla S, Orive G, Anitua E. A randomized clinical trial evaluating plasma rich in growth factors (PRGF-Endoret) versus hyaluronic acid in the short-term treatment of symptomatic knee osteoarthritis. Arthroscopy. 2012 Aug;28(8):1070-8. doi: 10.1016/j.arthro.2012.05.011.

    PubMed 22840987
  • Filardo G, Kon E, Roffi A, Di Matteo B, Merli ML, Marcacci M. Platelet-rich plasma: why intra-articular? A systematic review of preclinical studies and clinical evidence on PRP for joint degeneration. Knee Surg Sports Traumatol Arthrosc. 2015 Sep;23(9):2459-74. doi: 10.1007/s00167-013-2743-1. Epub 2013 Nov 26.

    PubMed 24275957
  • Kon E, Filardo G, Di Matteo B, Marcacci M. PRP for the treatment of cartilage pathology. Open Orthop J. 2013 May 3;7:120-8. doi: 10.2174/1874325001307010120. Print 2013.

    PubMed 23730375

Questions about this trial

What is this clinical trial studying?

A study testing PRP in people with Knee Chondropathy and Knee Early Osteoarthritis, run by Istituto Ortopedico Rizzoli at 1 site in Italy.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Aug 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

IKDC (International Knee Documentation Committee) subjective score (time frame: 12 months evaluation). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02135367, which also lists 9 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Aug 2018.

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