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The veterinary quarterly1987; 9(1); 1-8; doi: 10.1080/01652176.1987.9694070

Investigation into the heredity of congenital lateral patellar (sub)luxation in the Shetland pony.

Abstract: A breeding experiment was carried out in a group of Shetland ponies in order to investigate the heredity of congenital lateral patellar (sub)luxation. A breeding herd was established and consisted of stallions and mares acquired at different times. Some were free from, and others were affected by lateral patellar (sub)luxation in either one or both femoropatellar joints. Over a period of 20 years, 49 foals were born from different mating combinations. Some offspring were free from the defect and others showed the abnormality. Though the number of foals bred during the experiment is rather small, there is sufficient evidence to suggest a monogenic autosomal recessive hereditary transmission of the defect.
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Publication Date: 1987-01-01 PubMed ID: 3564314DOI: 10.1080/01652176.1987.9694070Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research aimed to investigate the genetic basis of a specific knee joint abnormality known as lateral patellar (sub)luxation in Shetland ponies, with results suggesting that the abnormality appears to be inherited as a recessive trait.

Background of the Research

  • The study undertook to investigate the pattern of inheritance of a specific joint abnormality in Shetland ponies, termed lateral patellar (sub)luxation. This condition involves the dislocation of the kneecap (patella), which can cause lameness.
  • Prior to this study, the inheritance mechanism of this condition in Shetland ponies was unknown, necessitating the present research.

Research Methodology

  • The study was conducted as a breeding experiment over a period of 20 years.
  • The breeding herd was composed of stallions and mares, some of whom were free from the condition, while others were affected by lateral patellar (sub)luxation in one or both femoropatellar joints. The horses were acquired at different times.
  • Overall, 49 foals resulted from various mating combinations during the experiment, and some were free from the condition, while others displayed the abnormality.

Research Findings

  • Despite the relatively small number of foals bred during the experiment, the results provided enough evidence to deduce a likely pattern of inheritance for the condition.
  • The study concluded that the lateral patellar (sub)luxation defect seems to be transmitted as an autosomal recessive trait, implying that a foal must inherit a copy of the defective gene from both parents in order to exhibit the condition.

Implications of the Research

  • The findings of this study contribute to a better understanding of the genetic mechanisms underpinning health issues in Shetland ponies, particularly in relation to the condition of lateral patellar (sub)luxation.
  • Knowing that the condition appears to be inherited as a recessive trait could help breeders in making informed decisions on breeding pair selection to reduce the incidence of the condition in future generations.

Cite This Article

APA
Hermans WA, Kersjes AW, van der Mey GJ, Dik KJ. (1987). Investigation into the heredity of congenital lateral patellar (sub)luxation in the Shetland pony. Vet Q, 9(1), 1-8. https://doi.org/10.1080/01652176.1987.9694070

Publication

The veterinary quarterly
ISSN: 0165-2176
NlmUniqueID: 7909485
Country: England
Language: English
Volume: 9
Issue: 1
Pages: 1-8

Researcher Affiliations

Hermans, W A
    Kersjes, A W
      van der Mey, G J
        Dik, K J

          MeSH Terms

          • Animals
          • Female
          • Horse Diseases / congenital
          • Horse Diseases / genetics
          • Horses
          • Joint Dislocations / congenital
          • Joint Dislocations / genetics
          • Joint Dislocations / veterinary
          • Male
          • Patella / injuries
          • Pedigree

          Citations

          This article has been cited 4 times.
          1. Ludwig EK, Hallowell K, Womble M, O'Neil E. Bilateral patellar aplasia in a foal. Vet Med Sci 2023 May;9(3):1143-1148.
            doi: 10.1002/vms3.1083pubmed: 36734120google scholar: lookup
          2. Abushhiwa MH, Alrtib AM, Elmeshreghi TN, Abdunnabi MA, Shmela ME, Bennour EM. Patellar luxation in Hejazi goats. Open Vet J 2021 Apr-Jun;11(2):295-300.
            doi: 10.5455/OVJ.2021.v11.i2.14pubmed: 34307087google scholar: lookup
          3. John EE, Viel L. Spontaneous resolution of bilateral congenital patellar luxation in an alpaca cria. Can Vet J 2018 May;59(5):518-520.
            pubmed: 29904205
          4. Rafati N, Andersson LS, Mikko S, Feng C, Raudsepp T, Pettersson J, Janecka J, Wattle O, Ameur A, Thyreen G, Eberth J, Huddleston J, Malig M, Bailey E, Eichler EE, Dalin G, Chowdary B, Andersson L, Lindgren G, Rubin CJ. Large Deletions at the SHOX Locus in the Pseudoautosomal Region Are Associated with Skeletal Atavism in Shetland Ponies. G3 (Bethesda) 2016 Jul 7;6(7):2213-23.
            doi: 10.1534/g3.116.029645pubmed: 27207956google scholar: lookup
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