Arthrocentesis knee is a procedure where a clinician inserts a needle into the knee joint to remove joint fluid. It is also called knee joint aspiration. It is commonly used in orthopedics, sports medicine, emergency care, and rheumatology. It can be done for diagnosis, symptom relief, or both.

Aspiration knee effusion is the removal of excess fluid from the knee joint using a needle and syringe. It is also called **knee aspiration** or **arthrocentesis**. It is commonly used in orthopedics, sports medicine, emergency care, and rheumatology. It can be done to help diagnose the cause of swelling or to reduce pressure and discomfort.

A Fluoroscopy-guided knee injection is a knee injection performed while using real-time X-ray imaging to guide the needle. It is most often used to place medication accurately into the knee joint space or a targeted region around the knee. Clinicians commonly use it in orthopedic, sports medicine, radiology, and pain-management settings. It can be used for both diagnosis (finding a pain source) and treatment (reducing symptoms).

Ultrasound-guided knee injection is a knee injection performed while the clinician watches a live ultrasound image. It is used to place a needle into a specific knee space or tissue with visual confirmation. It is commonly performed in orthopedics, sports medicine, rheumatology, and pain-focused musculoskeletal care. It may be used for diagnosis (to localize pain) or treatment (to deliver medication or biologic material).

RFA genicular nerves is a pain procedure that targets small sensory nerves around the knee. It uses radiofrequency energy to reduce pain signals traveling from the knee to the brain. It is most commonly discussed for chronic knee pain, especially when arthritis is involved. It is typically performed in interventional pain, sports medicine, or orthopedic care pathways.

Genicular nerve radiofrequency ablation is a minimally invasive pain procedure for the knee. It uses controlled radiofrequency energy to reduce pain signals carried by small nerves around the joint. It is most commonly discussed for knee osteoarthritis pain and persistent knee pain when surgery is not preferred or is being delayed. It is performed by clinicians trained in image-guided pain procedures, often in outpatient settings.

Genicular nerve block is an injection-based pain procedure that targets small nerves that carry pain signals from the knee joint. It is commonly used to help clarify where knee pain is coming from and to reduce pain for a period of time. It is often discussed in the setting of knee osteoarthritis, chronic knee pain, or pain after knee surgery.

Prolotherapy knee is an injection-based treatment used to address certain types of knee pain and perceived joint instability. It most commonly involves injecting an irritant solution (often hypertonic dextrose) around or within the knee. It is used in outpatient settings by some sports medicine, orthopedic, and pain-focused clinicians. It is generally discussed as a “regenerative” or “stimulatory” injection approach, although results vary.

Stem cell injection knee is a type of orthopedic injection that aims to support a painful or injured knee joint. It usually involves placing a patient-derived “cell-rich” or “biologic” preparation into the knee, most often into the joint space. It is commonly discussed in the context of knee osteoarthritis, cartilage wear, and some soft-tissue problems around the knee. The exact product, processing, and technique vary by clinician and case.

BMAC injection knee refers to injecting bone marrow aspirate concentrate (BMAC) into or around the knee joint. BMAC is made from a person’s own bone marrow that is collected and concentrated on the same day. It is commonly discussed in orthopedics and sports medicine as a “biologic” treatment option for certain knee conditions. Clinicians may use it as a non-surgical option or as an adjunct to a surgical procedure, depending on the case.