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- Author or Editor: Steven C. Schrader x
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Summary
Pelvic osteotomy with removal or repositioning of bone was performed as treatment for obstipation in 6 domestic shorthair cats with stenosis of the pelvic canal. Narrowing of the pelvic canal was the result of pelvic fracture or sacroiliac luxation in all cats. Tenesmus and obstipation began shortly after pelvic injury in 3 cats and 5 to 12 months after injury in the remaining cats. The duration of clinical signs ranged from 36 hours to 36 months. The duration of large intestinal obstruction influenced the outcome of surgery. Surgical widening of the pelvic canal helped eliminate signs of obstruction when signs were of <6 months' duration (n = 2). When signs of obstipation had continued for a longer period, and megacolon had developed, such treatment was minimally effective (n = 4).
Summary
Medical records of 98 dogs with wounds of the limbs caused by shearing forces (shearing wounds) were reviewed. Shearing wounds were reported most often in young dogs of many breeds, and most often resulted from trauma received during an encounter with an automobile. Wounds were located mainly on the distal portion of the limbs, with the most common site being the medial aspect of the tarsus and metatarsus. All injuries resulted in exposure of subcutaneous soft tissues, about three fourths of all injuries resulted in bone or joint exposure, and slightly more than half of the dogs had joint instability. All wounds were lavaged and debrided. Wounds were sutured, using primary closure techniques or methods that allowed the wound to remain partially or totally open to heal by second intention. Bandages were applied in all dogs. Most bandages were reinforced with a splint device. Grafting procedures or internal fixation devices were not used in initial treatment of the injuries. In the study reported here, healing time ranged from 2.0 to 8.7 weeks, depending on the size and depth of the wound and type of closure used. Mean number of anesthetic and surgical procedures was 1.7 per dog, and the mean number of rechecks after discharge from the hospital was 5.5 per dog. Outcome was considered excellent or good in 89 of 98 (91 %) dogs; these dogs were clinically normal or had only minor functional abnormalities after their injuries healed. Outcome was poor in 9 of 60 (15%) dogs.
Summary
High-density, polysulfone rods were used to repair 4 comminuted and 4 short-oblique, mid-diaphyseal femoral fractures in 8 dogs. Bony union was achieved in 2 dogs at 10 and 12 weeks after surgery. In one dog, the femoral fracture was healing when amputation of the limb became necessary because of sciatic nerve damage secondary to an ipsilateral pelvic fracture. In a fourth dog, fracture repair resulted in nonunion, despite normal clinical function at 18 months after surgery. In the remaining 4 dogs (50%), the rods failed at 3.5, 4, 6, and 22 weeks after surgery. These fractures were then stabilized by use of other methods. Although several factors may have contributed to failure of the rods, multiple autoclaving of the thermoplastic implants may have caused embrittlement and subsequent breakage.
Summary
Partial rupture of the cranial cruciate ligament was diagnosed in 25 dogs. In all dogs, the primary problem at the time of physical examination was hind limb lameness. The mean time from initial onset of lameness to diagnosis at exploratory surgery was 17 weeks. A cranial drawer sign was detected in 13 of the 25 dogs; in 9, the cranial drawer sign was evident only when the stifle was positioned in flexion. Of the 25 dogs, 12 had no detectable cranial drawer sign in response to manipulation of the involved stifle. In all dogs, lateral stifle arthrotomy was performed in routine manner, and the cranial cruciate ligament was found to be incompletely torn. Lesions identified during arthrotomy were rupture of the craniomedial band (n = 20 dogs), interstitial tear (n = 4 dogs), and rupture of the caudolateral band (n = 1 dog).
Summary
Displacement of the tendon of the superficial digital flexor muscle was diagnosed in 9 dogs (10 tarsi). Four of 10 displacements occurred in Shetland Sheepdogs. All dogs had an acute onset of lameness with swelling over the proximal end of the tuber cal-canei. Lateral displacement occurred in 8 tarsi and medial displacement in 2 tarsi. Nonsurgical treatment (exercise restriction, bandaging, and administration of anti-inflammatory medication) was ineffective in the 5 dogs in which it was attempted. Surgical reconstruction of the supporting soft tissues resulted in return to normal function in 9 cases available for follow-up evaluation.
