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The occurrence of primary endotracheal adenocarcinoma in two 12-year-old cats is reported. Dyspnoea was the most dominant clinical sign in both cases. The endotracheal masses were identified radiographically and removed via thoracotomy and tracheotomy in the first case and cervical tracheal resection and anastomosis in the second case. In both cases, the diagnosis of adenocarcinoma was confirmed histopathologically.

A compaiison is made between mongrels and miniature Poodles of the healing of experimentally produced fractures of the radius and ulna. Three different postoperative regimes were used in comparing the factors which predispose to nonunion. Resume. On compare la guerison d'une fracture experimentale du radius et cubitus entre un groupe de chiens croises et un groupe de caniches nains. Trois differentes methodes de soins postoperatoires ont ete instituees en comparant les facteurs predisposant a la non-union. Zusammenfassung. Die Heilung von experimentell erzeugten Frakturen von Radius und Ulna bei Bastardhunden und Zwergpudelm wurde verglichen. Zur vergleichenden Betrachtung von Faktoren die praedisponierend die Frakturvereinigung verhindern, kamen postoperativ drei verschiedene Behandlungsverfahren zur Anwendung.

SUMMARY The Prieur technique was employed to hook plates to fractures and corrective osteotomies. The technique permits rigid internal fixation when one component of the bone is particularly small.

Two types of total hip prostheses were implanted in three dogs that had been previously treated by excision arthroplasty, two for degenerative joint disease secondary to hip dysplasia and one for removal of a fractured femoral neck. Complications occurred in one case when the femoral shaft was split during the reaming process for implantation of the prosthesis and at three weeks after surgery when an oblique fracture of the distal femur occurred. Both complications were treated successfully. The time since surgery varied between eight and 18 months. All three dogs had excellent functional results evidenced by increased joint mobility and freedom from pain.

Lack of mineralization of a fracture of a radius and ulna does not necessarily produce nonunion or pseudarthrosis. Hyaline cartilage may persist at the fracture site beyond 24 weeks. A fracture may be firm although radiographically there is no evidence that the site is mineralized, being bridged only by hyaline and fibrocartilage and not by bone. Resume. On a constate qu'un defaut de mineralisation lors d'une fracture du radius et cubitus ne produit pas necessairement une non-union ou une pseudo-arthrose et que le cartilage hyalin peut demeurer au site d'une fracture au-dela de 24 semaines. Par consequent, une fracture peut etre suffisamment solide, bien que radiographiquement le site n'est pas mine ralise, etant soudee par du cartilage hyalin et fibreux seulement et non pas du tissu osseux. Zusammenfassung. Fehlende Mineralisierung einer Fraktur von Radius und Ulna fuehrt nicht unbedingt zu mangelnder Vereinigung oder zu einer Pseudarthrose, und hyaliner Knorpel mag laenger als 24 Wochen im Frakturgebiet vorkommen. Die Fraktur kann stabil sein, wenn roentgenologisch das Frakturgebiet nicht mineralisiert ist, und lediglich durch hyalinen und fibroesen Knorpel—nicht durch Knochen—ueberbrueckt ist.

A new method for repair of femoral capital epiphyseal fractures in the immature dog is described. The technique employs two small AO/ASIF cortical screws inserted in lag fashion from the articular surface into the femoral neck. The screw heads are countersunk, so as not to project from the articular cartilage of the femoral epiphyseal fragment, While this is an early report it is hoped that it will prompt the use of the technique by others so that its long term assessment may be more rapidly determined than by one clinic working alone.

— A review is presented of the clinical aspects and differential diagnosis of “open” and “closed” pyometra in the bitch and cat. Resume— Un compte-rendu est presente sur les aspects cliniques et les diagnoses differentielles des pyometres “ouverts” et “fermes” chez la femelle et le chat. Zusammenfassung— Die klinische Seite und unterschiedlichen Diagnosen von “offener” und “geschlossener” Pyometra bei Hundinnen und Katzen werden behandelt.

The utilization of an established technique of tendon repair for the correction of avulsion of the tibial tuberosity is presented. The method provides good fixation and support and does not require elaborate equipment. Two cases are described. Resume. L'article presente l'utilisation d'une technique etablie de reparation du tendon pour l'avulsion d'une tuberosite tibiale. La methode assure une bonne fixation et un bon support et ne necessite pas d'instruments compliques. Dew cas sont decrits. Zusammenfassung. Dargestellt wird die Anwendung eines bewahrten Verfahrens der Sehnenchirurgie fur die Besserung der Avulsion bei Tuberositas tibiae. Das Verfahren liefert gute Fixierung und Stutzung und erfordert keine komplizierte Instrumentausrustung. Zwei Falle werden beschrieben.

An investigation into the healing of experimentally produced fractures of the radius and ulna of miniature poodles is reported. A comparison is made between the healing of fractures subjected to various postoperative regimes. Resume. Etude de la consolidation des fractures experimentales du radius et du cubitus chez les caniches nains. Comparaison des resultats de differentes methodes de traitement post-operatoire. Zusammenfassung. Es wird uber eine Untersuchung der Heilung experimentell verursachter Frakturen des Radius und der Ulna von Zwergpudeln berichtet. Zwischen den Heilungserfolgen bei den Frakturen nach verschiedenen postoperativen Behandlungsweisen werden Vergleiche angestellt.

— A radiographic study of epiphyseal union of the canine appendicular skeleton—and it is reported that variation in the ossification pattern exists between siblings, that there is a wider difference between unrelated dogs of the same breed and a marked discrepancy between randomly selected dogs. Thus this criterion can only be used at best, as a crude indication of the age of a puppy. Resume— Une etude radiographique de l'union epiphysienne du squelette appendiculaire du chien —il est rapporte qu'il existe une variation dans le schema de Possification chez les enfants de meCme parents, qu'il y a une plus ample difference entre les chiens non-apparentes et appartenant a la meCme race et une divergence tres marquee entre des chiens choisis au hasard. Par ce fait, ces criteriums ne peuvent eCtre employes qu'au mieux comme indication possible de l'age du chiot. Zusammenfassung— Eine radiographische Studie uber die Knochenendevereinigung des appendikularen Hundeskeletts—es wird auch berichtet, dass Verande rungen in den Verknocherungsschemen bei Geschwisterhunden vorkommen und ein grosserer Unterschied zwischen nicht-verwandten Hunden derselben Rasse sowie ein auffallender Widerspruch bei aufs Geradewohl gewahlten Hunden besteht. Daher kann dieses Kriterium im gunstigsten Falle lediglich als grobe Andeutung fur das Alter des jungen Hundes dienen.

— Observations on the effects of chlorprothixene on thirty-nine dogs attended in practice are reported. The use of the drug as a sedative, narcotic and premedicant is discussed and the opinion is expressed that it is a useful improvement in its field. A notable feature is the marked potentiation of general anaesthesia with very smooth induction and recovery.

A new method of fusion of the canine tarsocrural joint is described employing a lag screw which is. protected by an AO/ASIF cuttable plate. The latter is placed on the lateral aspect of the joint following removal of the distal one-third of the fibula.