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Hip dysplasia, one of the most common orthopaedic diseases in dogs, can lead to chronic pain and functional impairment (Lust et al., 1973). Hip joint laxity is considered a major risk factor leading to abnormal weight-bearing forces and subsequent development of osteoarthrosis (Riser, 1975 and Frost, 1989). However, direct cause and effect between instability and osteoarthrosis has not been established (Prieur, 1980); while dogs that are affected with osteoarthrosis due to hip dysplasia show laxity, not all dogs that show laxity develop osteoarthrosis (Wright and Mason, 1977 and Smith, 1992). Osteoarthritic hip joints can benefit from early detection and subsequent treatment. Physical therapists have long utilized manual testing techniques and clinical reasoning to diagnose early-onset joint osteoarthritis and therapeutic treatments consisting of correcting muscle dysfunctions, relieving pain, joint mobilizations, and advisement on lifestyle modifications could be equally beneficial to the canine patient. As well, sacroiliac joint dysfunctions may also afflict the dog. An understanding of the anatomy and biomechanics of the canine sacroiliac joint and application of clinical assessment and treatmenttechniques from the human field may be substantially beneficial for dogs suffering from lumbopelvic or hindlimb issues (Edge-Hughes, 2007).
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