Clinicopathological studies on neurectomy in equids

Said, Ahmed; Khamis, Y.; Mahfouz, Mamdouh; Hegazy, Ahmed

doi:10.1111/j.2042-3306.1984.tb01972.x

Cited by 15 publications

(15 citation statements)

References 1 publication

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“…Attempts have been made to induce navicular disease by ligation of the medial palmar digital artery (Scott, Thrall and Sandler 1976), by bilateral ligation of the palmar digital arteries (Bhargava and Singh 1984; Rijkenhuizen et a1 1989a) and by bilateral neurectomy and ligation of digital arteries (Said, Khamis, Mafouz and Hegazy 1984).…”

mentioning

confidence: 99%

Navicular disease ‐ in search of definition

MacGREGOR

1989

Equine Veterinary Journal

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mentioning

confidence: 99%

Navicular disease ‐ in search of definition

MacGREGOR

1989

Equine Veterinary Journal

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“…In this way, an increased prevalence of neuroma is observed several months after docking (lamb: dog: Gross and Carr, 1990;pig: Simonsen et al, 1991); neurectomy (horse: Said and Khami, 1984;rat: Fischer et al, 1983); or beak trimming in poultry (Breward and Gentle, 1985;Gentle, 1986). Neuroma is not systematically associated with acute or chronic pain.…”

Section: Cosmetic Aspectsmentioning

confidence: 99%

“…Neuroma is not systematically associated with acute or chronic pain. Pain, caused by abnormal spontaneous neuroma's activity or to increased sensibility of it (Swanson, 1961;Scadding, 1981;Blumberg and Jä nig, 1984), is influenced by the healing process quality, itself relying on the type of operation, the age and the quantity of tissue removed (horse: Said and Khami, 1984;poultry: Gentle et al, 1995;Lunam et al, 1996). Skin adhesion subsequent to tail docking has also been observed in docked dogs (Carr, 1979).…”

Section: Cosmetic Aspectsmentioning

confidence: 99%

Tail docking in horses: a review of the issues

Lefebvre¹,

Lips

Ödberg

et al. 2007

Animal

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Routinely performed painful procedures are of increasing interest and, in 2001 (Royal Order, May 17), Belgium prohibited docking in several vertebrates including horses. In 2004, opponents to this decision submitted a Bill (Doc51 0969/001) to Parliament, intending to obtain derogation for Belgian draught horses, which were traditionally docked. The Animal Welfare Council of Belgium, an official body advising the Minister of Public Health, was asked to evaluate this complex question, including biological, ethical and socio-economic aspects, on the basis of the available peer-reviewed studies. In this context, this study reviews legal aspects (overview of the European legislation), zootechnic aspects (uses of the Belgian draught horse) and biological aspects (pain potentially related to docking; horses’ welfare linked to insect harassment and hygiene, communication and reproduction) of tail docking in draught horses. We conclude that (1) there is no benefit for horses in tail docking, including Belgian draught horses, (2) potential advantages of docking are essentially in favour of humans and these advantages could be scrupulously re-evaluated, taking into account practices of other countries. Therefore, there is no need to dock any horse other than for veterinary reasons.

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“…IN horses suffering lameness caused by navicular disease, resection of the palmar digital nerves has been identified as the only treatment which may provide permanent relief of the associated pain and lameness (Adams 1974). Palrnar digital neurectomy, however, is often complicated by subsequent formation of painful neuromas or re-establishment of innervation (Evans, Campbell, Pinner-Poole and Jenny 1968 ;Said, Khamis, Mahfouz and Hegazy 1984). Although improved operative techniques (Evans et ~11968;Keller 1%9;Fackelman and Clodius 1972;Tate and Evans 1980) have reduced the prevalence of postoperative complications, no surgical procedure has prevented completely neuroma formation and reinnervation.…”

Section: Introductionmentioning

confidence: 99%

Preliminary studies on long distance, retrograde transport of horseradish peroxidase in equine peripheral nerves

Fubini

Cummings

Todhunter

1985

Equine Veterinary Journal

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Summary As a prelude to studies on retrograde axonal transport of neurotoxin (ie, so‐called suicide transport) as a means to prevent post neurectomy neuroma formation, preliminary studies were conducted with an innocuous enzymatic marker, horseradish peroxidase (HRP). The proximal stumps of resected medial and lateral palmar digital nerves in six ponies were injected via a tuberculin syringe and needle with 50 μl of a 30 per cent solution of HRP in order to assess long distance retrograde axonal transport. The dorsal root ganglion of the cervical spinal enlargement (ie, C6, C7, C8, T1, T2) were removed at post injection intervals of two, four, six, eight, 10 and 12 days. These were sectioned serially and reacted by the tetramethylbenzidine method to demonstrate transported enzyme in the ganglionic cell bodies which give rise to sensory fibres of the palmar digital nerves. Enzyme, retrogradely transported over axon lengths of 115 cm, was first demonstrated in spinal ganglia four days after injections of the palmar digital nerves. The calculated transport velocity of 287 mm/day, although almost certainly an underestimate, greatly exceeded rates of 72 to 120 mm/day recorded previously with HRP in the peripheral nerves of small laboratory animals. The intensity of the HRP reaction product in ganglionic neurons was strong at four days and it remained unabated in ganglia examined at six, eight, 10 and 12 days post injection. The major sources of the sensory fibres of the palmar digital nerves appeared to be the ganglia of the C8 and T1 spinal segments which contained more than 90 per cent of all labelled neurons. Somatotopic localisation of the labelled cells could not be discerned. The total numbers of ganglionic neurons labelled after unilateral injections of the medial and lateral palmar digital nerves varied from several hundred to nearly 5000. Although the results supported the feasibility of undertaking studies on retrograde suicide transport, the wide range in the total numbers of labelled ganglionic neurons suggested that the simple injection procedure will have to be modified to ensure wide intraneural diffusion and maximal uptake of injected toxic substances.

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Clinicopathological studies on neurectomy in equids

Cited by 15 publications

References 1 publication

Navicular disease ‐ in search of definition

Navicular disease ‐ in search of definition

Tail docking in horses: a review of the issues

Preliminary studies on long distance, retrograde transport of horseradish peroxidase in equine peripheral nerves

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