Joint Position Assessment
Joint Position Assessment - Related Videos
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...
01:16
Structural Joints: Synovial Joints
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2025
Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
10:10
In Vivo Imaging Uncovers the Migratory Behavior of Leukocytes within the Joints
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2025
In vivo imaging of the joints is a valuable technique for uncovering the migratory behavior of leukocytes and molecular dynamics within the inflamed joints. Here, we present a detailed protocol for in vivo imaging of the joints using a murine model of type II collagen-induced arthritis (CIA).
01:26
Joints
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2025
Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function. Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial. Fibrous Joints Are Immovable The bones of a...
FAQs
Performance reflects the combined contribution of muscle spindles, tendon organs, and joint receptors. These sources provide information about limb and joint location, but the assessment does not treat any one receptor as the complete explanation. Their signals are integrated through brain and spinal pathways, so an observed error can reflect problems in peripheral sensing, neural integration, or both.
Removing reliance on vision makes the task a test of proprioceptive processing rather than visual confirmation. The participant must use internally generated sensory information to identify or reproduce the target position. This distinction helps investigators examine sensorimotor function more specifically, especially when they want to determine whether performance changes reflect the nervous system’s position-sensing pathways instead of visual guidance.
Receptor signals must be combined into a usable representation of limb position before the participant can respond accurately. Consequently, performance can provide information about more than local tissue sensation: it also reflects neural processing involved in sensorimotor control. This makes the assessment useful for studying how peripheral input and central pathways work together.
Testing begins with a joint placed or moved to a target angle or position. The participant then responds by reproducing that position or identifying it, without depending on vision for the location judgment. The resulting performance serves as an indicator of proprioceptive and sensorimotor function, allowing the investigator to characterize position-sensing ability.
It can help characterize changes associated with peripheral nerve injury, musculoskeletal disorders, aging, and neurological disease. These contexts may affect proprioceptive or broader sensorimotor performance, making the assessment useful for describing functional impairment. Its findings can therefore place position-sensing changes within the wider context of altered nervous-system or musculoskeletal function.
Results can guide rehabilitation strategies by showing how sensorimotor control is functioning at a given time. When the assessment is repeated, changes in performance can be tracked over time, providing a way to evaluate whether sensory-motor function is improving, remaining impaired, or changing during rehabilitation. This makes it useful for monitoring progress, not only identifying deficits.