Background:The metacarpophalangeal and metatarsophalangeal joints are very demanded during high intensity exercises, and may be affected by osteoarthritis, fractures, luxations and rupture of the suspensory apparatus. Thus, arthrodesis may be indicated to restore joint stability and accelerate the ankylosis process. The most commonly used surgical techniques have been associated with postoperative complications, including infection and failure of the implants, so it is important to develop procedures that are less invasive procedures and promoting stable fixation. Therefore, the aim of this work is to report the use of the modified steel basket technique for metatarsophalangeal arthrodesis in a foal with hyperextension of the joint due to rupture of the digital flexor muscles. Case: A 2-day-old male foal was admitted to clinical care, presenting multiple cutaneous wounds caused by dogs bites, located in the tarsus and thigh of the hindlimb. The animal presented in standing position and had no difficulty of movement, being initially treated through daily cleaning of the cutaneous wounds and systemic antibiotic therapy. Hyperextension of the metatarsophalangeal joint was evidenced after 20 days, being approached through tenotomy and tendon shortening, followed by tenorrhaphy and immobilization for 30 days. Due to the failure of the treatment, it was opted for metatarsophalangeal arthrodesis by modified steel basket technique. The procedure involved the implantation of a steel basket of 25.0 mm in diameter x 25.0 mm long in a 24.0 mm hole created on the dorsal surface between the third metacarpal and the proximal phalanx. The basket was filled with bone extracted from drilling and fixed with two cortical screws at an angle of 25° toward proximoplantar and distoplantar direction. Immobilization of the limb was performed postoperatively with synthetic plaster cast for 45 days and, due to the persistence of lameness, maintained with Robert Jones banding and plantar splint for another 15 days. At 90 days after surgery, radiographic control showed signs of degeneration and joint fusion, and grade 2 claudication (1-5) was observed during locomotion. At six months after surgery, discrete claudication (grade 1/1-5) was evident. The aesthetic and functional result was considered satisfactory and the animal was then ridden and used for leisure. Discussion: In this report, arthrodesis was indicated due to hyperextension of the metatarsophalangeal joint caused by the rupture of the digital flexor muscles, since these structures, together with the suspensory apparatus, assist in the support of the joint. Several techniques have been descrited for arthrodesis of metacarpal/metatarsophalangeal joints in horses, being the technique described by Bramlage the most employed and successful one. However, complications related to the techniques such as infection and implant failure were evidenced in one study. The technique of the modified steel basket is characterized by the promotional of effective intervertebral arthrodesis in cases o...
Background: Laparoscopic ovariectomy it is used more than 20 years in veterinary medicine, however, information of this technique in Brazil are rare. Also, the cost for his execution are high, specially the ovarian hemostasis procedure, that depends on highly specialized surgical instruments. The goal of this study is show the results achieved during laparoscopic ovariectomy in mares using a device to apply and cut tie-wraps, developed by the authors and that is in a patent process.Materials, Methods & Results: Four mares with ovarian pathologies were selected for a standing unilateral ovariectomy procedure and access to cavity occurred through three laparoscopic portals. The vessels and ligament were dissected to allow positioning of a polyamide tie-wrap by the device for cutting and applying those seals. Occlusion was made by pushing, and cutting through a rotation on the tie latch. Then, the mesovarium was cut with laparoscopic scissors and ovary removed by a communication between two accesses. Total surgical time and the equipment handling were noted. The average duration of surgical procedures was 80 ± 12.35 min and device handling time since its external preparation, application and cutting the polyamide tie-wraps was 3.4 ± 2.63 min. Only in one of four animals it was necessary to apply more than one tie, since the first promoted incomplete vessels occlusion. Within 10 postoperative days none of the animals showed clinical signs consistent with bleeding and / or infection and the wound’s healing were complete.Discussion: Surgical time for dissection and hemostasis during laparoscopic ovariectomy in mares shows great variation in the literature and depend on hemostasis technique. The average time of 80 min for a one-sided procedure using the device for application and cutting tie-wraps was considered appropriate, with the possibility of significantly reduction, since this is an instrumental in testing and yet there is not a definition of the learning curve from its use. The main reason related to the tie-wraps use, even controversial, is due a significant reduction in cost, since the devices for hemostasis available are very expensive to brazilian veterinarians. Although considered a simple application and advantages over other hemostatic methods the authors of this study do not indicate the use of non-surgical polyamide ties when other materials are available, also, it is important to clarify that the main purpose of this study was to report the effectiveness of the device for application and cut these ties while performing these surgical procedure steps. The device for applying and cutting tie-wraps allows closing and resection of polyamide tie-wraps, producing safe hemostasis to ovarian vessels during laparoscopic ovariectomy in mares, with appropriate surgical time and without trans or postoperative complications.
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