wearable crutch with lap joints

The present invention relates to a wearable crutch with a knee joint, and more specifically, to a wearable crutch with a knee joint, which rarely does not feel a pain of armpit as the length of the crutch is automatically adjusted by a crutch joint spring when walking or stopping after wearing the crutch, does not need to use power of the arm, can walk while wearing, and does not use power of the arm at all when walking. Accordingly, both hands can be freely used when walking or stopping so that handicraft can be freely performed by both hands at any time while using the crutch. Also, the crutch has functional characteristics as being seated in a chair or a vehicle such as a taxi while wearing.