Arthroscopic examination for the canine stifle joint was investigated in 14 normal beagle dogs using a 2.7 mm rigid scope for the human shoulder joint. In 3 other dogs, experimental resection of the anterior cruciate ligament was made by the arthroscope. Medial meniscus as well as anterior and posterior cruciate ligaments were clearly observed in all the joints examined. Other components of the joint such as the lateral and medial femoral condyles, long digital extensor tendon and synovial membrane were also clearly observed. Abnormalities in the medial meniscus secondary to the resection of the anterior cruciate ligament, including transverse tear in the free border and instability of the caudal horn, were also clearly demonstrated. Based on these results, the arthroscopic examination is considered to be useful and practically applicable to evaluate the canine stifle joint disorders.

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A bony mass was found in the distal femur of a 10-month-old, male Golden Retriever with lameness of the left hindlimb. Eroded cortices, permeate bone lysis patterns and periosteal reactions were observed on the distal femur and proximal tibia. An amputation was performad, and subsequent histopathology revealed a proliferation of well-differentiated osteocytes and chondrocytes without malignant population as a result of osteocatilaginous exostosis. Chemotherapy was not performed. Approximately 140 days following the amputation, cutaneous masses were found on the truncus, and diagnosed as an extraskeletal osteosarcoma histopathologically. Pulmonary radiography also revealed the presence of metastatic tumors. The animal died about 160 days after surgery.

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Two Holstein calves (6 weeks old) with mild hypoxemia (PaO₂ : 83.2 and 74.8 mmHg, respectively) caused from mild pneumonia were treated with an infusion of 7.2 % hypertonic saline solution (HSS : 2400 mOsmol/kg⋅H₂O) . HSS infusion induced a progressive increase in PaO₂ to the levels of 95.3 and 89.4 mmHg, respectively, at 15 min after the administration, showing the improvement of hypoxemia. The HSS infusion also produced a transient increase in cardiac output (CO : 141.2 and 127.1%, respectively), however the effect of HSS on the cardiac function was limited within 60 min.

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