![]() ![]() 13– 15 However, it is not known whether there is a difference between outcomes of CDBs and NCDBs undergoing VF combined with VSD. In addition, with respect to C-IVDH in small dogs, there are 2 known types of chondrodystrophic breeds (CDBs) that commonly develop type 1 hernias and non-CDBs (NCDBs) that commonly develop type 2 hernias. 8, 9, 11, 12 To our knowledge, whether use of VF combined with VSD in small dogs that undergo VSD affects recovery of initial neurologic signs and is associated with recurrence at adjacent sites after surgery, compared with dogs that undergo VSD alone, has not been evaluated using sufficient numbers of cases. 8– 10 The effect of combined VSD and VF on the mobility of the adjacent intervertebral region in large dogs has been reported in biomechanical studies and clinical cases, but there are few reports on their effect in small dogs. However, C-IVDH might recur in the adjacent intervertebral region after VF in large dogs because it creates an abnormal mechanical environment between adjacent vertebrae and contributes to instability. 6, 7 Depending on the amount and direction of disc material extrusion, in small dogs with a corresponding small vertebral body size, the limited slot width may be insufficient to allow complete retrieval of extruded disc material. 5 The presence of a large slot width after VSD (slot size larger than 33% to 50% of vertebral body width) can increase the risk for serious complications, such as postoperative instability, vertebral body subluxation, and fracture vertebral fixation (VF) can prevent these complications. 1– 4 This technique decompresses the spinal cord by removing the herniated disc material (nucleus pulposus), which often allows for rapid resolution of clinical signs. Cervical intervertebral disc herniation (C-IVDH) accounts for approximately 15% of disc herniations, and ventral slot decompression (VSD) is the surgical procedure most commonly performed to remove the disc material on the ventral side of the spinal cord in C-IVDH. ![]()
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