نشریه التیام
سال هفتم شماره 2 (پاییز و زمستان 1399)

Disorders and problems of the ligaments of the motor limbs are among the things that severely affect the performance of the horse and cause lameness. Early diagnosis, management and treatment measures will improve the prognosis of treatment. Damage to the ligaments of the suspensory apparatus, which includes the suspensory ligament and distal sesamoidean ligaments, is one of the most important ligament injuries of the fore and hind limbs. Despite advances in horse care, ligament injuries continue to occur. In this paper, we review the types of ligament problems in the limbs, etiology, clinical signs, examination, diagnosis, treatment and prognosis.

Tendon sheath is a connective tissue that main function is to protect the tendon in the areas that are most vulnerable to damage. One of the relatively common causes of lameness and abnormalities in the limb of horses is tendon sheath damage. Injuries to the digital tendon sheath, tarsus, and carp are more common than tendon sheaths in other parts of the limbs. Lameness and swelling at the site of the lesion are common clinical findings in many tendon sheath injuries. Primary diagnosis of tendon sheath inflammation is possible with the help of animal history and clinical signs. The use of diagnostic tools, especially diagnostic imaging, is very useful for definitive diagnosis and identifying the primary cause of the disorders or damage to the surrounding tissues. Complete treatment should be done after identifying the underlying cause of sheath inflammation, although treatments such as rest, the use of anti-inflammatory drugs, and cold therapy are effective in reducing inflammation and improving clinical signs.

Among the flexor tendons in the horse's limbs, the superficial digital flexor tendon is more prone to damage than the deep digital flexor tendon. SDF tendonitis is a common injury in event horses. Recovery of superficial digital flexor tendon (SDFT) injuries is slow, but re-injury is likely. SDF tendon injuries are more common in the forelimb. Flexor tendon injuries are due to strain on the tendon or a direct trauma. Tendon damage vary from inflammation and pain to complete rupture of the tendon. Injuries caused by strain are associated with swelling that require ultrasound assessment to confirm the diagnosis. Treatment for these injuries includes anti-inflammatory treatment, which is initially followed by a rehabilitation program. In cases where drug treatment is not responsive, surgical procedures including tendon splitting and superior check ligament desmotomy can be used. In this study, we briefly review the tendonitis of the superficial digital flexor tendon, etiology, clinical signs, diagnosis, treatment and prognosis.

Nowadays, due to compression of sports competitions and the occurrence of more injuries, the role of sports medicine in minimizing the recovery and returning the animal to its previous performance with maximum power is more prominent than before. Various remedies are employed for these cases, but they are not accepted by all physician and veterinarian around the world. Complementary or alternative medicine should be considered as a type of treatment that is not in the medical world today or is not even registered, but some individuals and communities refer to it as the best treatment and define professional branches and sub-categories for it. But another unusual branch for treating diseases is regenerative or reconstructive medicine. In recent years, advances in cell biology, genetic immunology, and other fields have enabled regenerative medicine to fundamentally change health care. One of the duties of governmental and international organizations working in the field of health and treatment is to provide proper information and appropriate awareness of all fields of complementary and regenerative medicine for therapists and horse owners so that each person, after reviewing and consulting, can use these branches of medicine according to their needs and problems. Recently, significant progress has been made in the field of these two branches of unconventional medicine in European countries and North America

The tendon is a firm fibrous band of connective tissue that connects muscle to bone. This structure has the ability to transfer mechanical forces resulting from muscle contraction to the skeletal system. Tendinitis is a general term, often used to describe painful tendon situations due to constant stretching, overuse, degeneration, or poor tendon biomechanism. Tendinopathy is often the result of useless attempts by the body to regenerate a tendon, which a pathological conflict has led to a malfunction. Various treatments have been used to manage tendon disorders. Stem cells are divided into two categories. Embryonic cells (which are very potential but due to ethical considerations, limited studies have been done on them) and postnatal cells. Postnatal cells are divided into two categories, which include; Hematopoietic stem cells and mesenchymal stem cells. Mesenchymal stem cells have the ability to differentiate into multiple cells, including tenocytes, chondrocytes, and fibroblasts. these cells are a potential alternative to treating tendon lesions. This article presentan overview of the structure, biomechanics and disorders of tendon and, while pointing to the common therapies today, introduces stem cells , retrospective studies and possibility of using these cells in the optimal treatment of tendon disorders.

Tendon is a mechanical bridge that transmits muscle strength to the bones and joints. Musculoskeletal disorders damages millions of dollars in economic losses each year to companies in the animal husbandry industry that inflict food. The tendon is mainly composed of tenocyte and tenoblast cells and is oriented and organized by collagen fibers. Viral arthritis / tenosynovitis in poultry is one of the pathological manifestations of avian reovirus infection. Viral arthritis can be diagnosed by clinical observations and serological examination and radiological findings. Studies show the effect of vaccines on the prevention of this disease. Tendon mineralization in poultry can be a part of the natural process or can be caused by aging or tendon damage. Mineral deposition in tendons makes it a hard structure with less flexibility. The morphological properties of tissue and mineralized tendon cells have been studied. Several studies on the effects of activity on avian Gastrocnemius tendon have been performed. One of the tendon injuries is related to the patagial tendon, which responds well to treatment after surgery. The tendon plays a vital role in function of birds and is damaged, which causes irreparable problems. Therefore, it is necessary to know its structure and precise function in preventing damage as well as their more effective treatment.

Ligament injuries are one of the most common injuries in small animals. These injuries can cause sudden pain, lameness and even weight intolerance. Early diagnosis and prompt treatment greatly increase the likelihood of successful treatment. Chronic injuries usually do not respond well to treatment and weaken the prognosis of treatment. Injury to the cruciate ligaments, followed by damage to the collateral ligaments, is one of the most common injuries to the knee joint. There are many ways to diagnose and confirm these injuries. These include ultrasonography and radiography. Numerous strategies for diagnosing and treating ligament injuries have been presented in previous studies, some of which have been attempted during this study.

Tendon tissue has limited regeneration potential and usually the consequent formation of scar tissue causes inferior mechanical properties. Nanoparticles could be used in different way to improve tendon healing and regeneration, ranging from scaffolds manufacturing (increasing the strength and endurance or anti-adhesions, anti-microbial, and ante inflammatory properties) to gene therapy. This paper aims to summarize the most relevant studies showing the potential application of nanoparticles for tendon tissue regeneration.

Veterinary anesthesia is a relatively new science that uses different drugs and techniques to provide optimal condition (analgesia, immobility, muscle relaxation and amnesia) to perform various medical, diagnostic and surgical procedures in domestic, exotic and wild animals. In order to perform a safe sedation, analgesia, local and general anesthesia, adequate scientific knowledge of anatomy, physiology and pharmacology of the species are required. The most common species that referred for surgical procedures are small animal (cat and dog) and horses. Although surgical procedure are also performed on ruminants, general anesthesia is not common in these species due to some specific reasons (economic costs, bloat, regurgitation and easily performed standing surgeries in cattle). There are several anatomical, physiological and pharmacological differences as well as difference in body weight and temperament between small animal and horses that should be considered before anesthesia. The present paper discusses the major differences that require appropriate preoperative preparation when conducting anesthesia in small animal and horses.