rickety

adjectives

inclined to shake as from weakness or defect
"a rickety table"; "a wobbly chair with shaky legs"; "the ladder felt a little wobbly"; "the bridge still stands though one of the arches is wonky"
is derived from
affected with, suffering from, or characteristic of rickets
"rickety limbs and joints"; "a rachitic patient"
lacking bodily or muscular strength or vitality
"a feeble old woman"; "her body looked sapless"