LPL and Hip dysplasia: Nine studies reported the measured values in healthy dogs [16,17,18,22,23,24,25,26,31]; however, 20 studies investigated dogs with and without different orthopedic diseases, such as CrCL rupture [19,20,21,29,32,33,34,37,38], different grades of MPL or LPL [28,30,35,36,39,40,41,42,43,44], and other orthopedic diseases such as hip dysplasia [27].