Management of Canine Y-T Humeral Fractures Using Titanium Polyaxial Locking Plates in 17 Dogs

ABSTRACT The objective of this study was to document the short- and medium-to-long-term outcomes and complication rates of Y-T humeral condylar fractures fixed using titanium polyaxial locking plate (T-PLP). A retrospective review was performed of the medical records and radiographs of dogs with a Y-T humeral condylar fracture treated with T-PLP at a single veterinary referral center (2012–2018). Seventeen cases met the inclusion criteria. Medium- to long-term follow-up (.6 mo) information was derived using the Liverpool Osteoarthritis in Dogs (LOAD) questionnaire. Recorded complications were catastrophic (1/17) and minor (2/17). Gait at 10–12 wk following surgery was subjectively assessed as good or excellent for 13 cases. Radiographic bone union was achieved in 7/12 cases at 4–6 wk. LOAD scores obtained a mean of 15 mo (range 6–29 mo) following surgery and indicated no or mild impairment in 15/16 and moderate functional impairment in 1. The application of T-PLP for the treatment of Y-T humeral condylar fractures resulted in adequate stabilization allowing successful fracture healing and medium- to long-term outcomes comparable to previous reports. According to results of LOAD testing, the medium- to long-term follow-up suggests that clients were aware of mild to moderate functional impairment in all cases.

The Influence of the Mandibular Chin Angle on the Occurrence of Mandibular Condylar Fracture: A Retrospective Study

Background. Condylar fractures are commonly associated with symphysis/parasymphysis fractures. Condylar fractures have been attributed to direct and indirect traumatic forces, the direction and magnitude of the forces, and the condylar anatomy. The chief aim of this study was to determine the association between the newly defined mandibular chin angle and the occurrence of condylar fractures. Materials and Methods. A retrospective study was conducted to analyze two-dimensional computed tomography (2D CT) scans of patients with a history of chin trauma. The outcome was a symphysis/parasymphysis fracture with or without fracture of the mandibular condyle. The Mediff InstaRISPACS web-based platform was used to measure the chin angle. The cerebral aqueduct of Sylvius in the corresponding 2D CT midsagittal image was the standard reference plane to measure the chin angle. The SPSS Version 20 (IBM Corp, Armonk, NY) was used for data analysis. Results. The sample size included 120 2D CT scans of patients with symphysis/parasymphysis fractures (60 associated with condylar fractures and 60 without condylar fractures). The mean chin angle in the group without condylar fracture was 133.35 ± 3.87°, which was approximately 15° lesser than in the condylar fracture group (mean, 148.56 ± 5.49°), and these findings were statistically significant P < 0.05 . Conclusion. Individuals with a high chin angle are potentially at a higher risk of sustaining associated condylar fractures.

DIAGNOSTIC TACTICS FOR TRANSCONDYLAR AND SUPRACONDYLAR FRACTURES OF THE HUMERUS IN CHILDREN

Transcondylar and supracondylar fractures of the humerus in children are one of the most relevant and still not completely solved problems of modern pediatric traumatology. In the problem of condylar and supraorbital fractures of the humerus, the issues of diagnosis, choice of indications for surgical revision of the vascular-nervous bundle of the elbow area in this pathology are insufficiently covered. To solve the problems of the study, we analyzed the treatment of 313 victims with transcondylar and supracondylar fractures of the humerus, which were treated at the City Children's Clinical Hospital in Lviv in the period from 2013 to 2018. The structure of the distribution of arrays on the basis of rotational displacement in condylar fractures of the humerus is dominated by displacement up to 30°, which in the first group was found in 61.8% of cases, and in the second group - 69.2% of cases. The share of severe rotational displacements in the structure of group arrays is almost the same in both observation groups: 29.1% in the first group and 29.5% in the second group. Analysis of the proportion of extremely severe rotational displacements up to 90° in the structure of group arrays revealed that such victims were 7 times more among the victims of the first group than among the victims of the second group, due to the use of the proposed unified protocol scheme for diagnosis and treatment humeral fractures in pediatric patients, which avoids or reduces the difference in the occurrence of secondary displacements.

Acute soft tissue injury to the temporomandibular joint and posttraumatic assessment after mandibular condyle fractures: a longitudinal prospective MRI study

Objective: Evaluation of acute soft tissue injury of the temporomandibular joint (TMJ) with type I-VI fractures immediately after trauma and investigation of the longitudinal evolution including response to conservative treatment using MRI. Methods: The joints of 24 patients with 33 condylar fractures (15 unilateral, nine bilateral) were imaged on a 1 Tesla MR system within the first 24 h post-trauma. 12 of these patients with 16 condylar fractures (eight unilateral, four bilateral) were clinically re-evaluated using MRI after 3 months of closed treatment. The position, morphology and signal intensities of the disc, capsule, retrodiscal tissue, and osseous structures were documented. Results: In the acute phase, disc displacements (DDs) were diagnosed in 8 out of 33 joints with fracture, including posterior DDs in two joints and tears of the inferior retrodiscal lamina in 11 joints. The follow-up MRI in 12 patients revealed new DD in four joints on the fractured side (FS) including a posterior DD and an increased degree of displacement, and new DDs in two joints in the non-fractured side (NFS). Conclusion: Preexisting and traumatic DD and soft tissue injuries are frequent findings in patients with condylar fracture. Independent of the degree of trauma, condylar fractures may determine the subsequent development of DD on both FS and NFS. Early MR imaging may help initiate well-directed specific measures for better outcomes in the acutely injured TMJ.

Study of open versus closed reduction of mandibular condyle fractures

Background: Condylar fractures of the mandible are a commonest occurrence in maxillofacial surgery. Many surgeons prefer closed therapy with maxillomandibular fixation, while open treatment with rigid internal fixation has become more common in recent years. This study provides a comparative evaluation of open and closed reduction of the mandibular condyle.Methods: The 50 patients with condylar fractures were treated with open and closed reduction as per the requirement.Results: A higher incidence of unilateral segmented condylar fractures were seen in young adult males. Open reduction and internal fixation (ORIF) with a combined approach was the preferred treatment of choice with fewer post-op complications.Conclusions: ORIF is a suitable technique in the treatment of condylar fractures as it promises few complications.