Comparison of the short-term complications of TTA-rapid and modified cTTA procedures.

The objective of this retrospective study was to determine the complications of the first 30 tibial tuberosity advancement rapid (TTA-rapid) and 30 modified circular tibial tuberosity advancement (mcTTA) procedures performed by our team, and to compare the results with the findings reported in the literature. Our research was based on 30 procedures in each group. All dogs were client-owned. Data were collected only for the study of cases that had a minimum follow-up period of 3 months. Intraoperative (IO) and postoperative (PO) complications were assessed, with the latter divided into two subgroups: major and minor. Results obtained for the TTA-rapid group: IO complications 23.3% (7/30), major PO complications 13.3% (4/30), minor PO complications 16.7% (5/30). Results of the mcTTA group: IO complications 0% (0/30), major PO complications 3.3% (1/30), minor PO complications 20% (6/30). Comparing the complication rates, we found that there was a significant difference between the two groups in the occurrence of IO complications (P = 0.01054); however, there was no significant difference in the incidence of major (P = 0.3533) and minor (P > 0.9999) PO complications between groups. Our results are consistent with the findings reported in the literature and suggest that both techniques are efficient and carry a relatively low complication rate.

Biomechanical testing of canine tibiae: Changes resulting from different tibial tuberosity advancement techniques - Pilot study.

The objective of the present pilot study was to determine the force required to break (a) intact canine tibiae, (b) tibiae following the osteotomy of the tibial tuberosity and (c) tibiae following Tibial Tuberosity Advancement- (TTA-) rapid surgery. Six pairs of tibiae of dogs between 15 and 35 kg body weight were used in a cadaver study. Three groups were created with four tibiae in each group; intact (Group 1), osteotomy of the tibial tuberosity and tibial crest (Group 2) and TTA-rapid (Group 3). The tibiae were put under static axial compressive load, applied until failure. The force required to break the tibiae was termed maximal force (F max). The mean of F max was 8193.25 ± 2082.84 N in Group 1, 6868.58 ± 1950.44 N in Group 2 and 7169.71 ± 4450.39 N in Group 3. The sample size was small for a statistical analysis but as a preliminary result, we have determined the force (F max) required to break canine tibiae. Furthermore, we hypothesise that osteotomies result in weakening of the tibial structure.

Vertebral osteomyelitis and meningomyelitis caused by Pasteurella canis in a dog--clinicopathological case report.

A clinicopathological case study of vertebral osteomyelitis caused by Pasteurella canis in a 2.5-year-old male Jack Russell Terrier is presented. The case was characterised by a chronic course with signs of spinal pain and acute paraplegia. The diagnosis was established by radiography, myelography, post-myelographic CT examination, and laboratory tests including routine blood work and cerebrospinal fluid (CSF) cytology, and confirmed by postmortem pathological and microbiological examinations. Diagnostic imaging showed severe osteolysis, ventral spondylosis and spinal cord compression at the 4th and 5th lumbar vertebrae. The blood tests revealed mild leukocytosis and anaemia, while CSF cytology showed lymphocytic and mononuclear pleocytosis. Necropsy demonstrated severe osteomyelitis and meningomyelitis, but the source of infection could not be established. To the authors' knowledge, this is the first description of canine vertebral osteomyelitis caused by this organism.

[Comparative study of hand-held nickel-titanium dental instruments based on the shape of the prepared root canal]. / A nikkel-titánium endodontiai kézi múszerek összehasonlító vizsgálata a preparált gyökércsatorna formája alapján.

The aim of this study was to compare the shaping characteristics of two hand instruments: the NiTi K-files and the NiTi S-files. A total of 60 extracted human roots were embedded in resin blocks. The roots were divided into three groups according to their shape: straight, apically curved and entirely curved. Each of the three groups was divided into two subgroups for the NiTi K-file and the NiTi S-file instrumentation. The files were used with a step-back technique and enlarged so that the master apical file was size 30, and the canals were stepped back to size 40. The performance of the files was assessed by the superimposition of projected radiographs taken in bucco-lingual and mesio-distal views before and after preparation. The results were analyzed statistically using of analysis of covariance and Duncan's multiple range test. Although canal preparation using NiTi K-files was quicker, there were no statistically significant differences between file types. The NiTi S-file removed significantly more dentine at the most coronal level (p < 0.05). There were minor differences between instruments at the apical level. Only in the proximal view of apically curved canals prepared with NiTi S-files was significantly more dentine removed from the convex side of the wall (p < 0.05). At the middle level the NiTi S-files removed more dentine from the concave wall in apically curved canals. Under the conditions of this study, preparation with NiTi K-files produced more appropriate shapes in roots with apically curved canals than NiTi S-files.