Letesson Julien, Goin Bastien, Trouillet Jean Louis, Barthez Paul
Lameilhé Veterinary Clinic, Castres, France.
University of Lyon, VetAgro Sup, ICE, 69280 Marcy-l'Etoile, France.
Vet Med Int. 2022 Apr 26;2022:5112274. doi: 10.1155/2022/5112274. eCollection 2022.
Traumatic vertebral fracture or luxation often results in spinal instability requiring surgical stabilization. This study describes the long-term outcome of spinal stabilization using a unilateral 5-hole 2-0 UniLock implant in eight dogs and two cats with trauma-induced thoracolumbar vertebral luxation/subluxation and presumed instability, as assessed by a combination of preoperative radiographs and MRI using a 3-compartment method. The UniLock plate was secured with four monocortical locking screws in adjacent vertebral bodies. Additional pins and facet screws were used in several patients. Postoperative radiographs and MRI studies showed restoration of the main spinal axis in all patients and satisfactory implantation of the screws in the vertebral bodies, with no intrusion in the vertebral canal or in the adjacent intervertebral disc spaces. Neurological status improved in nine patients six weeks postoperatively. Partial implant failure was detected in three patients with no long-term consequences. After 12 months, seven patients reached full recovery with no neurological deficit, two patients were euthanized (including one owing to an unrelated condition), and one remained paraparetic. The results of this study demonstrate that using a 2-0 UniLock implant to stabilize the thoracolumbar spine results in satisfactory long-term recovery in most dogs and cats with traumatic spinal luxation/subluxation and presumed instability. Complications may occur but do not require revision surgery and do not affect clinical outcomes.
创伤性椎体骨折或脱位常导致脊柱不稳定，需要手术固定。本研究描述了使用单侧5孔2-0 UniLock植入物对8只犬和2只猫进行脊柱固定的长期结果，这些动物患有创伤性胸腰椎椎体脱位/半脱位且推测存在不稳定，术前通过X线片和采用三室法的MRI进行评估。UniLock钢板通过4枚单皮质锁定螺钉固定在相邻椎体上。部分患者还使用了额外的钢针和小关节螺钉。术后X线片和MRI研究显示，所有患者的脊柱主轴线均恢复，螺钉在椎体中的植入情况令人满意，无椎管或相邻椎间盘间隙侵犯。9例患者术后6周神经功能状态改善。3例患者检测到部分植入物失败，但无长期后果。12个月后，7例患者完全康复，无神经功能缺损，2例患者实施安乐死（其中1例因无关疾病），1例仍存在截瘫。本研究结果表明，使用2-0 UniLock植入物稳定胸腰椎脊柱，可使大多数患有创伤性脊柱脱位/半脱位且推测存在不稳定的犬猫获得满意的长期恢复。可能会出现并发症，但不需要翻修手术，也不影响临床结果。
