An unmet need remains for a bone graft substitute material that is biocompatible, biodegradable and capable of promoting osteogenesis safely in vivo. The aim of this study was to investigate the use of a novel collagen–hydroxyapatite (CHA) bone graft substitute in the clinical treatment of a mandibular bone cyst in a young horse and to assess its potential to enhance repair of the affected bone. A 2 year‐old thoroughbred filly, presenting with a multilobulated aneurysmal bone cyst, was treated using the CHA scaffold. Post‐operative clinical follow‐up was carried out at 2 weeks and 3, 6 and 14 months. Cortical thickening in the affected area was observed from computed tomography (CT) examination as early as 3 months post‐surgery. At 14 months, reduced enlargement of the operated mandible was observed, with no fluid‐filled area. The expansile cavity was occupied by moderately dense mineralized tissue and fat and the compact bone was remodelled, with a clearer definition between cortex and medulla observed. This report demonstrates the promotion of enhanced bone repair following application of the CHA scaffold material in this craniomaxillofacial indication, and thus the potential of this material for translation to human applications. Copyright © 2015 John Wiley & Sons, Ltd.

Ultrasound-guided injection techniques may be of great help for equine practitioners in the diagnosis and treatment of pathologies involving synovial structures in the shoulder region. Further work is needed to confirm these results in clinical cases.

An immature gray seal was presented with lethargy, weight loss, vomiting and hematuria. Hepatic disease and urinary tract infection were suspected. Abdominal ultrasound showed hyperechoic structures with marked acoustic shadowing spread throughout both kidneys, but incomplete visualization of the liver. Abdominal CT showed mineral densities scattered throughout both kidneys and poor delineation of the liver. Due to the poor quality of life, the seal was euthanized. Postmortem examination showed ammonium urate nephroliths, pyelonephritis, and hepatic cirrhosis. This case report emphasizes the difficulty of characterizing liver disease with conventional 2D-ultrasound and CT in a deep-chested animal with minimal intra-abdominal fat.

Leiomyoma with short, wide, and thick peduncles were treated successfully in a cow and a mare with minimally invasive endoscopic approaches aiming at maximal uterine tissue preservation.

Subchondral bone cyst in the sulcus intertrochlearis tali -Diagnostics and therapySubchondrale bone cysts are a rare cause of lameness in the horse. In the present case report, a severe lameness of the right hind leg appeared in a ten-year-old Arabian gelding. Consequently, due to a septic arthritis of the talocrural joint and an aseptic arthritis of all three compartments of the right knee, the horse had been treated twice in two months. Six weeks after this treatment, medium-grade, aseptic arthritis of the right stifle joint was diagnosed. This was treated with triamcinolone acetonide and hyaluronic acid. The horse was then released with a movement plan and oral pain medication. Ten days after the treatment of the right stifle joint, the horse again showed a severe lameness of the right hind leg. On the side and on the dorsomedial-lateroplantar and dorsoplantar radiograph of the tarsus, a well demarcated, round, radiolucent area of approximately one centimetre in diameter with a radiolucent centre was found in the proximal talus. On the basis of the clinical, radiographic and scintigraphic findings collected, a suspected subchondral bone cyst in the sulcus intertrochlearis was diagnosed and a diagnostic-therapeutic arthroscopy of the tarsal joint was carried out. After three weeks of box rest, a step program was started which was conducted over a period of two months. About three months after the operation, the horse was no longer lame, could trot and be used again..