{"action":"create","ckan_id":null,"date_created":"Wed, 01 Apr 2026 17:30:32 GMT","date_finished":null,"harvest_job_id":"962ea3eb-b8f9-487f-97a7-a998d42dd6a5","harvest_source_id":"8e0c0837-e26e-432c-bb3b-dd0df4f1b9af","id":"8782142b-7958-43fa-9787-5ae819ef4fc6","identifier":"https://data.cdc.gov/api/views/u287-dqd4","parent_identifier":null,"source_hash":"d62aa59869af16ab65e81ab8e4bd911066921bf7db1bb2a7e8091cbf9341f2bb","source_raw":"{\"@type\": \"dcat:Dataset\", \"accessLevel\": \"public\", \"bureauCode\": [\"009:20\"], \"contactPoint\": {\"@type\": \"vcard:Contact\", \"fn\": \"Physical Effects Research Branch (PERB), Health Effects Laboratory Division (HELD), National Institute for Occupational Safety and Health\", \"hasEmail\": \"mailto:sa-cin-webteam@cdc.gov\"}, \"description\": \"Occupational activities that require high knee flexion, such as kneeling and squatting, are associated with a higher prevalence of knee osteoarthritis (OA). It is generally accepted that excessive contact pressures in the joint may cause degeneration of healthy knee joints. Ailments in the patellofemoral (PF) joint were a common cause for knee pain in clinical observations. Knee savers have been used in sports and occupational activities to protect the knee joints during tasks involving high knee flexion. The biomechanics of the effects of knee savers on musculoskeletal loading have not been investigated. The purpose of the current study was two-fold: first was to develop a biomechanical model that accounts for the effects of the interface contact forces between thigh and leg, or between thigh-leg and knee savers; and second was to evaluate, using the biomechanical modeling, the effects of knee savers on musculoskeletal loading in the knee joint in high knee-flexion tasks. The biomechanical model was used to analyze the basic comfort and fitting tests of knee savers: the subjects to start from a standing posture, squat down to a working posture, and return to the standing posture, while subjects\\u2019 heels remained on the ground during the tasks. The tasks were repeated without and with knee savers. The musculoskeletal loadings in the knees were calculated using inverse dynamic modeling. Our results indicated that the wearing of knee savers in the high knee-flexion tasks helped to reduce the contact forces in the PF joint by about 20%. Our findings suggest that wearing knee savers may help reduce the risks of the knee OA for workers who are frequently required to perform high knee-flexion tasks for extended time.\", \"distribution\": [{\"@type\": \"dcat:Distribution\", \"downloadURL\": \"https://data.cdc.gov/download/u287-dqd4/application/x-zip-compressed\", \"mediaType\": \"application/x-zip-compressed\"}], \"identifier\": \"https://data.cdc.gov/api/views/u287-dqd4\", \"issued\": \"2025-11-18\", \"landingPage\": \"https://data.cdc.gov/d/u287-dqd4\", \"license\": \"http://opendefinition.org/licenses/odc-odbl/\", \"modified\": \"2026-01-14\", \"programCode\": [\"009:034\"], \"publisher\": {\"@type\": \"org:Organization\", \"name\": \"Centers for Disease Control and Prevention\"}, \"theme\": [\"National Institute for Occupational Safety and Health\"], \"title\": \"Biomechanical Analysis of the Effects of Knee Savers on Knee Joint Loading During High Knee-Flexion Tasks\"}","source_transform":null,"status":"error"}