Eskelinen Esa V, Suhonen Ari P, Virolainen Juha V, Liska William D
IVC Evidensia, Finland.
Aisti Veterinary Hospital, Finland.
Vet Comp Orthop Traumatol. 2025 Jul;38(4):186-193. doi: 10.1055/s-0044-1795087. Epub 2024 Nov 21.
To evaluate the outcome and complications in dogs with medial patellar luxation (MPL) undergoing tibial tuberosity transposition (TTT) with a locking plate and pin fixation (Plate-Pin).
This retrospective multicenter study included 65 consecutive MPL stifle surgeries using tibial tuberosity (TT) fixation with a 5-hole locking plate and a pin. The median weight of the dogs was 6.2 kg. The grade of luxation was 2/4 in 50 stifles and 3/4 in 15 stifles. Outcomes were assessed during follow-up examinations 33 to 648 days after surgery with clinical examination and radiography. Canine Orthopedic Index questionnaires were sent to owners 6 to 39 months after surgery.
Complications were reported in 14/65 stifles, of which 8/14 were minor and 6/14 were major. After treatment of the major complications, lameness was resolved in all cases and the MPL was resolved in 64/65 stifles.
When the surgery was performed as described in this article, Plate-Pin fixation for TT during MPL surgery is a feasible technique with a lower incidence of luxation recurrence, TT avulsion, and fractures compared with recent retrospective studies with pin and tension band wire TT fixation. Further development of the locking plate TT fixation is indicated to resolve pin-related complications and to determine if fixation including a pin is necessary.
评估采用锁定钢板和钢针固定（钢板 - 钢针）进行胫骨结节移位术（TTT）治疗内侧髌骨脱位（MPL）犬的治疗效果及并发症。
这项回顾性多中心研究纳入了连续65例使用5孔锁定钢板和钢针进行胫骨结节（TT）固定的MPL stifle手术。犬的中位体重为6.2千克。50个stifle的脱位等级为2/4，15个stifle为3/4。在术后33至648天的随访检查中，通过临床检查和放射照相评估治疗效果。术后6至39个月向犬主发送犬骨科指数问卷。
65个stifle中有14个报告了并发症，其中14个中的8个为轻度，6个为重度。在对重度并发症进行治疗后，所有病例的跛行均得到缓解，65个stifle中有64个的MPL得到缓解。
按照本文所述进行手术时，与近期采用钢针和张力带钢丝进行TT固定的回顾性研究相比，MPL手术期间采用钢板 - 钢针固定TT是一种可行的技术，脱位复发、TT撕脱和骨折的发生率较低。需要进一步改进锁定钢板TT固定以解决与钢针相关的并发症，并确定是否有必要采用包括钢针在内的固定方式。
