The present invention relates to immunoglobulins that bind
ADAMTS5 and more in particular to polypeptides, that comprise or essentially consist of one or more such immunoglobulins. The invention also relates to constructs comprising such immunoglobulins, such as immunoglobulin
single variable domains (ISVDs) or polypeptides as well as nucleic acids encoding such immunoglobulins or polypeptides; to methods for preparing such immunoglobulins, polypeptides and constructs; to host cells expressing or capable of expressing such immunoglobulins or polypeptides; to compositions, and in particular to pharmaceutical compositions, that comprise such immunoglobulins, polypeptides, constructs, nucleic acids and / or host cells; and to uses of immunoglobulins, polypeptides, constructs, nucleic acids, host cells and / or compositions, in particular for prophylactic and / or therapeutic purposes, such as the prophylactic and / or therapeutic purposes mentioned herein.