Table 2. Aetiology of tendinopathy: proposals for predisposing factors (Alfredson et al., 2006; Andres and Murrell, 2008; Bard, 2009; Forsgren et al., 2009; Fournier and Rappoport, 2005).
Innate general factors Acquired general factors Acquired local factors
- age (> 40 years)
- male gender
- anatomic variants
- blood type O
- genetic factors		 - nutrition (excess of protein)
- excessive force
- body composition (adiposity)
- new physical activities
- poor technique
- training errors
- high body weight/adiposity
- weakness
- environmental conditions
- running surface
- hyperthermia
- drugs (oral corticosteroid or contraception, fluoroquinolones, cannabis, heroin, cocaine)
- infectious diseases
- general diseases (RA, psoriasis, SLE, neurological conditions, hyperuricemia, AHT, CRF, diabetes, insulin resistance, hypothyroidism, arteriosclerosis, hyperparathyroidism, glycogen storage disease)		 - decrease in local vascular perfusion
- repetitive loading
- excessive loading
- abnormal and unusual movements
- impingement
- new/old shoes and equipment
RA = rheumatoid arthritis; SLE = systemic lupus erythematosus; AHT = arterial hypertension; CRF chronic renal failure.