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Work-Related Ill Health
Published in Céline McKeown, Office Ergonomics and Human Factors, 2018
A ganglion is a fluid-filled cyst, usually found around a joint or tendon sheath, often on the back of the hand or wrist. The fluid is synovial fluid, and the cyst is usually about the size of a pea, but can get bigger. Although there is no generally accepted association between working conditions and the appearance of ganglion, most ergonomists would probably agree that their presence in large numbers amongst a workforce suggests that the workers are exposed to inappropriate working conditions.
Work-Related III Health
Published in Céline McKeown, Office Ergonomics, 2007
A ganglion is a fluid-filled cyst, usually found around a joint or tendon sheath, often on the back of the hand or wrist. The fluid is synovial fluid, and the cyst is usually about the size of a pea but can get bigger. Although there is no generally accepted association between working conditions and the appearance of ganglion, most ergonomists would probably agree that their presence in large numbers amongst a workforce suggests that the workers are exposed to inappropriate working conditions.
Overuse wrist injuries in adolescent platform and springboard divers
Published in Research in Sports Medicine, 2023
Cici Zhang, Si Shen, Lin Qiu, Liqin Wang, Xuwen Zeng, Quan Zhou
Ganglion cysts were observed in the divers. Ganglion cysts are benign mucin-filled cysts typically located near joints and tendons and are the most common soft tissue masses in the wrist. The exact etiology is uncertain; nevertheless, theories include joint stress resulting in fluid leakage through a joint capsule, mucin secretion stimulation by periarticular mesenchymal cells, or mucoid degeneration of periarticular connective tissue (Gude & Morelli, 2008). Ganglion cysts in divers may result from repetitive loading, and common sites include the dorsal wrist superficial to the pisiform and the volar wrist between the radial artery and the flexor carpi radialis tendon. The tendency of ganglion cysts to occur at these anatomic locations may be associated with repetitive mechanical stress. However, the presence of ganglion cysts may be temporary, and their number may decrease after a certain time. Intraosseous ganglion cysts were also found in the hamate, capitate, and lunate. All cysts were located adjacent to periarticular sites. In osteoarthritis, cysts may arise from the intrusion of synovial fluid into the bone at the joint surface, degeneration in intramedullary connective tissue, and metaplasia of skeletal connective tissue. Ganglion cysts and intraosseous ganglia have been associated with nonspecific wrist pain, which have also been observed in the asymptomatic and symptomatic wrists of computer users (Burgess et al., 2010).
Vibrotactile sensitivity testing for occupational and disease-induce peripheral neuropathies
Published in Journal of Toxicology and Environmental Health, Part B, 2021
The peripheral sensory system is used by humans and animals to investigate and identify objects in their environment. Changes or loss of peripheral sensory perception may indicate the presence of disease or injury to 1) cutaneous sensory receptors; 2) peripheral nerves that carry sensory information from the site of stimulation to the dorsal root ganglia and/or spinal cord; 3) spinal afferent pathways that carry sensory information to the brain; and/or 4) regions of the brain involved in sensory perception (Hendry, Hsiao, and Bushnell 1999). Tests examining sensory perception, including tests of thermal perception, touch, two-point tactile discrimination, manual dexterity, nerve conduction velocity, and perception of vibration, have been used to assess sensory loss in workers exposed to hand- or foot-transmitted vibrations (Cherniack et al. 2008, 1990; Cole et al. 1998; Poole, Mason, and Harding 2016; Seah and Griffin 2008) or workers exposed to various chemicals, such as pesticides (Dicka et al. 2001; Starks et al. 2012; Steenland et al. 1984) Other investigators also reported that sensitivity to vibrotactile stimuli is altered in the hands and feet as a result of aging (Brammer, Taylor, and Lundborg 1987; Peterson et al. 2020), and various diseases including diabetes (Ising, Dahlin, and Larsson 2018; Peterson et al. 2020) and stroke (Liu et al. 2002). In contrast, very low-amplitude vibration may be able to be used to improve sensory perception in subjects with balance problems and various movement disorders (Bao et al. 2019; Liu et al. 2002). This review summarizes how, and under which conditions, the vibrotactile perception threshold (VPT) test has been used to detect injury or dysfunction of the sensory nervous system (Brammer et al. 2010).