Final answer:
Chronic injuries are those that develop over time due to repetitive tasks and are considered musculoskeletal disorders. Muscle strain and tendinitis are common forms, with first-aid treatment including the PRICE method and possibly NSAIDs. Severe cases of tendinitis may require surgery.
Step-by-step explanation:
A type of injury that develops over time from a worker performing a task repeatedly is known as a chronic injury. These injuries can be categorized under musculoskeletal disorders, which are the result of continuous biomechanical stresses such as repetitive motions, over-exertion, or maintaining awkward positions for extended periods.
Conditions like muscle strain and tendinitis are common musculoskeletal disorders. A muscle strain occurs when muscle fibers tear from being overstretched, also known as a pulled muscle. On the other hand, tendinitis is the result of the overuse of a joint causing microtrauma to the tendon, leading to inflammation. Individuals with jobs that require repetitive tasks, such as using a jackhammer, are at high risk for developing tendinitis – often referred to as tennis elbow, jumper's knee, or swimmer's shoulder depending on the joint affected.
First-aid treatment for these disorders includes the PRICE method – Protection, Rest, Ice, Compression, and Elevation. In addition, anti-inflammatory pain medications, such as NSAIDs, can be prescribed to help alleviate the symptoms. However, if tendinitis is severe, it may require surgical intervention due to the slow healing nature of tendon tissue.