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Intra-Articular

Phase 3

Knee Osteoarthritis | Small molecule | Musculoskeletal |Pacira BioSciences, Inc.|Last Updated: Apr 9, 2026

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Trial Design

RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment1,937

FDA Designations

No designations recorded

Clinical trial landscape

Intra-Articular · 1 trial · 1 indication

Phase 3 1
NCT04504812A Sequenced Strategy for Improving Outcomes in People With Knee Osteoarthritis PainKnee Osteoarthritis
COMPLETED1,937 Analytics
PHASE3COMPLETED
A Sequenced Strategy for Improving Outcomes in People With Knee Osteoarthritis Pain
Knee OsteoarthritisUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in Pain Intensity as assessed by the Modified 4-item Brief Pain Inventory (BPI) Pain Scale
Change from Baseline to 8 weeks post-randomization (mITT) and to 8 weeks post-treatment (per protocol) in Phase 1; Change from Baseline to 12 weeks post-randomization (mITT) and to 12 weeks post-treatment (per protocol) in Phase 2

The Modified 4-item BPI Pain scale consists of 3 items from BPI Pain Intensity and 1 item from BPI Pain Interference. This is a continuous measure that will be calculated as the average of worst, average, current knee pain, and pain upon walking. Change from baseline (BL) will be used in mITT analyses, and change from treatment will be used in per protocol analyses.

Secondary Endpoints

Change in Pain Interference as assessed by the BPI
Change from Baseline to 8 weeks post-randomization (mITT) and to 8 weeks post-treatment (per protocol) in Phase 1; Change from Baseline to 12 weeks post-randomization (mITT) and to 12 weeks post-treatment (per protocol) in Phase 2
Change in Physical Functioning as assessed by the Knee Injury and Osteoarthritis Outcome Score (KOOS)
Change from baseline to 8 weeks post-randomization (mITT) and to 8 weeks post-treatment (per protocol) in Phase 1; Change from Baseline to 12 weeks post-randomization (mITT) and to 12 weeks post-treatment (per protocol) in Phase 2
Patient Global impression of Change (PGIC)
8 weeks post-randomization (mITT) and 8 weeks post-treatment (per protocol) in Phase 1; 12 weeks post-randomization (mITT) and 12 weeks post-treatment (per protocol) in Phase 2
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Study Design & Arms

AllocationRANDOMIZED
MaskingSINGLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1: Best Practices + DuloxetineACTIVE_COMPARATORParticipants will receive Duloxetine and a prescription for guideline-recommended treatments for knee osteoarthritis, i.e., Best Practices. Best Practices can include topical or oral nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen; physical therapy that may include aquatherapy; integrative treatments such as acupuncture, yoga, or a structured exercise program; and other non-invasive treatments. Phase 1 ended enrollment on April 12, 2024.
Phase 1: Best Practices + Duloxetine + Pain coping skillsACTIVE_COMPARATORParticipants will receive Duloxetine, pain coping skills training, and a prescription for guideline-recommended treatments for knee osteoarthritis, i.e., Best Practices. Best Practices can include topical or oral nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen; physical therapy that may include aquatherapy; integrative treatments such as acupuncture, yoga, or a structured exercise program; and other non-invasive treatments. Phase 1 ended enrollment on April 12, 2024.
Phase 2: Intra-Articular Injection (HA+)ACTIVE_COMPARATORParticipants will receive an intra-articular injection of hyaluronic acid mixed with steroid and bupivacaine. Phase 2 ended enrollment on October 24, 2024.
Phase 2: Nerve Procedure: Long Acting BlocksACTIVE_COMPARATORParticipants will receive a nerve blocking procedure, long-acting local anesthetic, and steroid injection. Phase 2 ended enrollment on October 24, 2024.
Phase 2: Nerve Procedure: Nerve AblationACTIVE_COMPARATORParticipants will receive a nerve ablation procedure and steroid injection. Phase 2 ended enrollment on October 24, 2024.
Phase 1: Best PracticesACTIVE_COMPARATORParticipants will receive a prescription for guideline-recommended treatments for knee osteoarthritis, i.e., Best Practices. Best Practices can include topical or oral nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen; physical therapy that may include aquatherapy; integrative treatments such as acupuncture, yoga, or a structured exercise program; and other non-invasive treatments. Based on the pre-specified stopping rules described in Protocol section 13.2, the DSMB advised ceasing enrollment into Arm 1A (Best Practices). This recommendation was accepted by the sponsor and study investigators. Arm 1A (Best Practices) was closed on 11/29/2023.

Interventions

NameTypeDescription
DuloxetineDRUGDuloxetine is a drug that is used to improve pain and function in people with knee osteoarthritis (KOA). Duloxetine is approved by the Food and Drug Administration (FDA) for the treatment of depression, anxiety disorder, fibromyalgia, and joint pain. It will be titrated up from 20 or 30mg according to a schedule provided by a study provider.
Intra-Articular InjectionCOMBINATION_PRODUCTIntra-Articular Injection is an injection of 3-6 milliliter (mL) hyaluronic acid (HA) mixed with 1 milliliter (mL) depo methylprednisolone (a steroid) and 2 mL 0.5% bupivacaine (an anesthetic) into the knee.
Nerve Procedure with long acting blocksPROCEDUREPeople assigned to receive this will have 1 milliliter (mL) of a long-acting local anesthetic (a.k.a. liposomal bupivacaine or EXPAREL) and steroid injected into the knee.
Nerve Procedure with nerve ablationPROCEDUREPeople assigned to receive this will have heat applied to destroy the nerve signaling pain in the knee. Steroid will be administered after the procedure to reduce the risk of neuritis.
Pain Coping Skills TrainingBEHAVIORALParticipants will be provided with a written manual that includes login information for the pain coping skills training website. The participants will be expected to log into the system weekly, work through the modules, and participate in skills practice.
Best PracticesOTHERBest Practices can include topical or oral nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen; physical therapy that may include aquatherapy; integrative treatments such as acupuncture, yoga, or a structured exercise program; and other non-invasive treatments.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites24

Inclusion Criteria: * Knee pain score of ≥4 and ≤ 9 on the Modified 4-Item BPI Pain Scale at pre-intervention screening * Meets at least 1 of the 3 American College of Rheumatology (ACR) Classification criteria for knee osteoarthritis. ACR criteria are: 1. At least three of the following using hi...

Countries:United States
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Frequently asked questions about Intra-Articular

What is Intra-Articular used for in knee osteoarthritis?

Intra-Articular is an investigational small molecule being developed by Pacira BioSciences for the treatment of knee osteoarthritis. It is administered intra-articularly, meaning directly into the joint. The drug is currently in Phase 3 clinical development for this indication.

Who makes Intra-Articular?

Intra-Articular is being developed by Pacira BioSciences, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol PCRX. The company is advancing this investigational therapy for knee osteoarthritis.

What phase is Intra-Articular in?

Intra-Articular is in Phase 3 clinical development for knee osteoarthritis. It is an investigational drug and has not been approved by regulatory authorities. The Phase 3 trial has been completed, with results expected to inform further development.

What clinical trials is Intra-Articular in?

Intra-Articular has been studied in a Phase 3 clinical trial registered as NCT04504812, titled "A Sequenced Strategy for Improving Outcomes in People With Knee Osteoarthritis Pain." This completed trial enrolled 1,937 participants with knee osteoarthritis in the United States.

Is Intra-Articular the same as any other drug?

Intra-Articular is the name used for this investigational therapy in clinical development. No alternative names have been disclosed for this drug. It is being studied specifically for its potential role in managing knee osteoarthritis pain.