what causes tendon weakness
Causes of Tendon weakness: 1  Systemic lupus erythematosus. 2  Dermatomyositis. 3  Polymyositis. 4  Systemic sclerosis. 5  Wegener's granulomatosis. 6  Cutis laxa. 7  Duputyren's contracture. 8  Mucopolysaccharidoses.