What condition involves microscopic tears in the collagen matrix of a tendon, usually due to overuse?

Tendonitis is the condition characterized by microscopic tears in the collagen matrix of a tendon, primarily resulting from overuse. This overuse can lead to inflammation and pain in the affected tendon. In the context of tendonitis, specifically, the collagen fibers within the tendon become damaged over time due to repetitive stress or activity, rather than an acute injury. This makes tendonitis a common issue among athletes and individuals who engage in repetitive movements, such as running, swimming, or certain occupational tasks.

Understanding tendonitis as an overuse injury differentiates it from other conditions like neuropathy, which involves nerve damage rather than tendon damage, and muscle strains, which refer to injuries within muscle fibers themselves. Additionally, ligament tears are injuries to connective tissues that support joints and are distinct from the issues affecting tendons. Thus, tendonitis is correctly identified as the condition involving microscopic tears in the tendon due to repetitive strain.