Joint Capsule Access
Joint Capsule Access - Related Videos
05:24
Teratoma Generation in the Testis Capsule
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Cited by 25 •
2011
Human pluripotent stem cells (hPSCs) have the potential to treat a myriad of different diseases. The utility of these cells lies in the fact that they can differentiate into any cell type in the body. Here we describe the teratoma assay, which is used to demonstrate the pluripotence of hPSCs.
02:17
Separation of Bacteria by Capsule Amount Using a Discontinuous Density Gradient
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2025
Source: Feltwell, T., et.al. Separating Bacteria by Capsule Amount Using a Discontinuous Density Gradient. J. Vis. Exp. (2019)This video demonstrates the use of a discontinuous density gradient to separate bacterial strains based on capsule amount. By centrifuging a transposon mutant library through the gradient, bacteria with different capsule densities localize to distinct layers. The separated fractions can then be collected for downstream analysis.
01:03
Structural Joints: Fibrous Joints
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2025
Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints. Suture All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
01:17
Structural Joints: Cartilaginous Joints
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2025
As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage. There are two types of cartilaginous joints: Synchondrosis A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary or...
06:28
Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis
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2025
Herein, we describe a surgical method to transect the anterior cruciate ligament (ACL) as a reliable model to induce knee osteoarthritis in rodents and methodologies for harvesting knee synovial fluid, measuring knee edema, and assessing osteoarthritis severity.
FAQs
Knowledge of joint anatomy guides the instrument through the surrounding soft tissues toward the enclosed joint space. This anatomical understanding supports accurate entry into the capsule rather than unnecessary tissue traversal. In clinical practice, it helps clinicians obtain synovial fluid or position a treatment, anesthetic, or contrast material where it is intended to act.
Accurate placement determines whether the procedure reaches the joint capsule and produces a useful clinical result. Correct positioning can support reliable synovial-fluid collection, pressure relief, or targeted delivery of medication, anesthetic, or contrast material. It also helps reduce unnecessary injury to surrounding tissues, making anatomical precision central to effective access.
The intended action within the capsule determines what the access is used to accomplish. Aspiration withdraws synovial fluid for analysis or pressure relief, whereas injection delivers medication or anesthetic for treatment. Contrast material serves imaging purposes. Thus, the same access principle can support diagnostic sampling, therapy, visualization, or selected minimally invasive procedures.
The procedure begins with identifying the relevant joint anatomy and selecting an entry path through the surrounding soft tissues. A needle or another instrument is then advanced into the joint capsule. Once access is established, the clinician may withdraw synovial fluid, deliver medication, anesthetic, or contrast, or proceed with a selected minimally invasive intervention.
A needle or other instrument provides the route into the capsule. Depending on the clinical objective, the access may permit withdrawal of synovial fluid or delivery of medication, anesthetic, or contrast material. The material introduced therefore reflects whether the procedure is intended for treatment, anesthesia, imaging, fluid analysis, or another supported intervention.
Clinicians use joint capsule access when they need information or treatment from within a synovial joint. Applications include obtaining fluid for analysis, relieving pressure, administering medication or anesthetic, supporting imaging with contrast material, and performing selected minimally invasive procedures. Its clinical value depends on matching accurate access with the intended diagnostic or therapeutic goal.