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Arthrocentesis vs Observation Study for Acute ACL Tears (ASPIRATE)

4 november 2026 uppdaterad av: Jelle van der List, MD PhD MBA, Ohio State University

Arthrocentesis Study for Perioperative Intervention on Reducing Arthritis and Trauma-related Effects

The ASPIRATE trial is a randomized controlled trial evaluating the effects of pre- and post-operative knee joint aspiration in patients with an ACL injury. The study aims to determine if removing knee joint fluid can mitigate the increasing inflammation after surgery, reduce quadriceps atrophy, improve short-term pain, enhance functional recovery, and lower long-term rates of post-traumatic knee osteoarthritis.

Studieöversikt

Status

Rekrytering

Intervention / Behandling

Detaljerad beskrivning

While Anterior Cruciate Ligament Reconstruction (ACLR) successfully restores joint stability, patients still face challenges regarding long-term osteoarthritis and lower rates of returning to sports. Traumatic hemarthrosis-the buildup of blood in the joint following an injury and surgery-acts as a toxic agent that triggers cartilage degeneration. Furthermore, it causes arthrogenic muscle inhibition (AMI), which leads to quadriceps muscle shrinkage and abnormal walking patterns. This cycle is often referred to as the "second-hit phenomenon". While draining fluid from the knee (arthrocentesis) before surgery is common, performing repeat drainages after surgery to remove built-up blood is experimental. This study evaluates whether this low-cost, widely available procedure can safely interrupt that destructive cycle.

The main objective of this trial is to intervene in the hemarthrosis process to prevent or reduce the incidence of AMI and cartilage breakdown through pre- and post-operative joint drainage. Secondary objectives include assessing whether the procedure leads to less quadriceps muscle shrinkage, improves short-term pain, enhances leg strength at 3 and 6 months, accelerates return-to-sport rates, and reduces joint wear at a 1-year follow-up.

Eligible participants include individuals aged 15 to 40 years who experienced their injury 30 days or less prior, have a confirmed ACL tear, and have chosen to undergo ACLR using either a quadriceps tendon or bone-patellar tendon-bone autograft. Key exclusion criteria include previous knee or ACL surgery on the same leg, a cortisone injection within the previous 3 months, major multi-ligament repairs done at the same time (such as the MCL, PCL, or PLC), advanced osteoarthritis, pregnancy, or an inability to speak English fluently.

All participants will undergo standard ACLR surgery using their own tissue graft. Clinical assessments are conducted from baseline through 1 year, tracking patient surveys on knee pain, activity levels, and psychological readiness at baseline, 1 week, 2 weeks, 6 weeks, 3 months, 6 months, and 1 year. Physical and imaging steps include measuring thigh circumference with a tape measure at every visit, performing leg strength tests on a special machine at 3 and 6 months, and taking standing knee X-rays with a specialized framing device at the 1-year mark to evaluate joint health.

Studietyp

Interventionell

Inskrivning (Beräknad)

54

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studieorter

    • Ohio
      • Columbus, Ohio, Förenta staterna, 43230
        • Rekrytering
        • Jameson Crane Sports Medicine Institute
        • Kontakt:
        • Huvudutredare:
          • Jelle van der List, MD, PhD
      • Dublin, Ohio, Förenta staterna, 43016
        • Rekrytering
        • Ohio State Outpatient Care Dublin
        • Kontakt:
        • Huvudutredare:
          • Jelle van der List, MD, PhD

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

15 år till 40 år (Barn, Vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  1. Age 15 -40
  2. Time from injury to aspiration ≤30 days
  3. Patient with a confirmed ACL tear and have elected to have an ACL reconstruction using a quadriceps tendon (QT) or bone-patellar tendon-bone (BPTB) autograft tendon

Exclusion Criteria:

  1. Fear of needles or rejection of arthrocentesis
  2. Previous knee or ACL surgery on the affected knee
  3. Previous cortisone injection in the affected knee within the previous 3 months
  4. Concomitant procedures that involve repair or reconstruction of the medial collateral ligament (MCL), posterolateral corner (PLC) or posterior cruciate ligament reconstruction (PCL)
  5. Osteoarthritis Kellgren-Lawrence grade ≥3.
  6. Cartilage procedures beyond microfracture or chondroplasty
  7. Planned osteotomies or meniscus allograft transplantation (MAT)
  8. Muscular, vascular or neurological diseases that influence rehabilitation or surgery
  9. Current use of prednisone or cytostatic medication
  10. Obesity with a BMI ≥45
  11. Daily smoking
  12. History of illicit drug or alcohol abuse
  13. History of prior infection in knee
  14. History of chemotherapy treatment
  15. History of sickle cell disease
  16. Pregnancy during injury or surgery
  17. No mastery of the English language

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Aspiration

Each subject that is randomized to this arm will receive a knee aspiration both before and after ACL surgery.

Aspiration is a minimally invasive medical procedure in which a sterile needle and syringe are inserted into the intra-articular space of the knee joint to extract excess synovial fluid that is built up around the knee space.

Inget ingripande: No Aspiration

Each subject that is randomized to this arm will not receive an intervention and will only complete questionnaires.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Quadriceps peak strength
Tidsram: 3 months and 6 months

The Biodex measurement physical device will be used to measure the isokinetic strength of the quadriceps muscle. The leg is brought from flexion to extension at 60 degrees per second and 300 degrees per second and the maximum force is measured for the quadriceps. This is compared to the contralateral side and expressed in the limb symmetry index (LSI) as the percentage of strength compared to the contralateral side. This is expressed N/m

3 months and 6 months

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Quadriceps atrophy
Tidsram: 3 and 6 Months

The quadriceps circumference of the affected leg is measured in centimeters at 6 and 16 centimeters above the superior pole of the patella and compared to the contralateral side.

3 and 6 Months
Short-term Pain
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months and 1 year

The overall pain in the knee is assessed using a visual analog scale (VAS) questionnaire that is standardized, and this is compared to the preoperative baseline score. The score ranges from 0 to 10 with 0 indicating no pain and 10 indicating worst pain imaginable

1 week, 2 weeks, 6 weeks, 3 months, 6 months and 1 year
Patient-reported outcome measures
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year

The questionnaire subjective International Knee Documentation Committee (IKDC) will be obtained. The score ranges from 0 to 100 with 100 having a normal score and 0 an abnormal score.

1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year
Lysholm Score
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year

The questionnaire Lysholm Score will be obtained. The score ranges from 0 to 100 with 100 having a normal score and 0 an abnormal score.

1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year
Forgotten Joint Score
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year

The questionnaire Forgotten Joint Score will be obtained. The score ranges from 0 to 100 with 100 having a normal score and 0 an abnormal score.

1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year
Tegner activity score
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year

The questionnaire Tegner activity score will be obtained. The score ranges from 0 to 100 with 100 having a normal score and 0 an abnormal score.

1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year
Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI)
Tidsram: 1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year

The questionnaire Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI) will be obtained. The score ranges from 0 to 100 with 100 having a normal score and 0 an abnormal score.

1 week, 2 weeks, 6 weeks, 3 months, 6 months, 1 year
Return to Sports
Tidsram: 3 months, 6 months and 1 year.

Return to sports will be assessed using questionnaires: when they return to sports (months after surgery), if they have reached preinjury level of performance (yes/no) and whether they are fully return to previous level (yes/no).

3 months, 6 months and 1 year.
Joint space narrowing on radiographs
Tidsram: 1 year

Osteoarthritic changes at AP and Rosenberg views at 1 year of the medial and lateral compartment compared to preoperative radiographs measured in absolute millimeters at the narrowest area of the respective compartments

1 year
Osteoarthritis grade on radiographs
Tidsram: 1 year

Osteoarthritic changes at AP and Rosenberg views at 1 year of the medial and lateral compartment compared to preoperative radiographs measured as Kellgren-Lawrence scale (scale from 0 to 4 with 0 indicating no signs of osteoarthritis and 4 indicating end-stage bone-on-bone osteoarthritis)

1 year

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Utredare

  • Studierektor: Jelle van der List, MD, PhD, Ohio State University

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 augusti 2026

Primärt slutförande (Beräknad)

31 december 2028

Avslutad studie (Beräknad)

31 december 2029

Studieregistreringsdatum

Först inskickad

3 september 2026

Först inskickad som uppfyllde QC-kriterierna

4 november 2026

Första postat (Faktisk)

10 november 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

10 november 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

4 november 2026

Senast verifierad

1 november 2026

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • STUDY20252711

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IPD-planbeskrivning

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