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Home / Equine Research Bank / Anat Embryol (Berl) / The developmental anatomy of the equine navicular bursa and ...
Anatomy and embryology1989; 179(4); 355-367; doi: 10.1007/BF00305062

The developmental anatomy of the equine navicular bursa and associated structures.

Abstract: The navicular bone, navicular bursa and their associated structures were collected from 20 horses ranging in age from 80 days gestation to 2 years post-gestation. The right front foot of every horse was sampled for light microscopy. The development of the navicular bursa and associated structures were studied. Study of the developmental anatomy of the equine navicular bursa established that the bursa is a distinct entity in both the fetus and the adult horse. Development of the bursal cavity in the fetus was found to be complete by 120 days of gestation. Synovial membrane of the navicular bursa was first evident at 100 days of fetal age. With increasing fetal maturation there was a concurrent development in the synovial membrane consisting of increased cellularity, vascularity and villi formation. Nerve fibers or nerve endings were not observed within the synovial membrane of the navicular bursa. However, nerve bundles were often observed within the associated connective tissue, bursal capsule and distal navicular ligament. Pacinian corpuscles were observed in the 200-day fetus in close proximity to the navicular bursa. The development of a fibrous bursal capsule was first evident at 160 days fetal age, thereafter increasing in both thickness and density. Ligaments of the navicular bone were found to develop early in fetal life. At 100 days the collateral sesamoidean ligaments were well developed; however earliest evidence of formation of the distal navicular ligament was at 120 days. In both the fetus and the adult the proximal blood supply to the navicular bone was found to course dorsally in close proximity to the collateral sesamoidean ligament to enter the proximal border of the navicular bone. Concurrent with weight bearing there was a dorsal palmar orientation of the bone trabeculae of the navicular bone. In the young postgestational horses a progressive roughening or fraying of the palmar surface of the navicular bone and the apposing surface of the deep digital flexor tendon was evident.
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Publication Date: 1989-01-01 PubMed ID: 2735530DOI: 10.1007/BF00305062Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

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 study looks at the development of the navicular bursa (a small fluid-filled sac situated at the navicular bone in horses) and its associated structures from fetuses to adult horses. The research discovered the timing of key stages of these structures’ development and differences in their maturity and location in relation to other important parts of the horse’s leg.

Methodology

  • The study used the right front foot of 20 horses at different development stages, ranging from 80 days of gestation to 2 years post-gestation.
  • These samples were then subjected to light microscopy to study the structures and development of the navicular bursa.

Findings

  • The research determined that the navicular bursa is a distinct entity in both fetuses and adult horses.
  • The development of the bursal cavity was complete by 120 days of gestation.
  • The first evidence of the synovial membrane of the navicular bursa was found at 100 days of gestation. As the fetus matured, so did the synovial membrane, featuring increased cellularity, vascularity and villi formation.
  • No nerve fibers or endings were observed within the synovial membrane; however, nerve bundles were frequently noted within the associated connective tissue, bursal capsule and distal navicular ligament.
  • The first evidence of a fibrous bursal capsule was found at 160 days of gestation, increasing in both thickness and density as time progressed.
  • Ligaments of the navicular bone were observed to develop early in fetal life, with evidence suggesting that collateral sesamoidean ligaments were well formed at 100 days, and the distal navicular ligaments first formed at around 120 days.

Structural Orientation and Changes

  • Both in fetuses and adults, the proximal blood supply to the navicular bone was observed to run dorsally in close proximity to the collateral sesamoidean ligament before entering the proximal border of the navicular bone.
  • With increase in weight bearing, orientation of the bone trabeculae of the navicular bone was observed to change from dorsal to palmar.
  • In young post-gestational horses, evidence of progressive roughening or fraying was seen on the palmar surface of the navicular bone and the opposing surface of the deep digital flexor tendon.

Cite This Article

APA
Hoffer MA, Leach DH, Doige CE. (1989). The developmental anatomy of the equine navicular bursa and associated structures. Anat Embryol (Berl), 179(4), 355-367. https://doi.org/10.1007/BF00305062

Publication

Anatomy and embryology
ISSN: 0340-2061
NlmUniqueID: 7505194
Country: Germany
Language: English
Volume: 179
Issue: 4
Pages: 355-367

Researcher Affiliations

Hoffer, M A
  • Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.
Leach, D H
    Doige, C E

      MeSH Terms

      • Animals
      • Fetus / anatomy & histology
      • Fetus / cytology
      • Foot / anatomy & histology
      • Foot / cytology
      • Foot / embryology
      • Horses / anatomy & histology

      References

      This article includes 18 references
      1. Mishra PC, Leach DH. Extrinsic and intrinsic veins of the equine hoof wall.. J Anat 1983 May;136(Pt 3):543-60.
        pubmed: 6885617
      2. Pohlmeyer K. [The arterial blood supply and its intraosseus course in the appendigal bones of equine foals, IV. Ossa digitorum manus (author's transl)].. Dtsch Tierarztl Wochenschr 1979 Mar 5;86(3):113-9.
        pubmed: 369801
      3. Colles CM. Ischaemic necrosis of the navicular bone and its treatment.. Vet Rec 1979 Feb 17;104(7):133-7.
        pubmed: 452348doi: 10.1136/vr.104.7.133google scholar: lookup
      4. Ackerman N, Johnson JH, Dorn CR. Navicular disease in the horse: risk factors, radiographic changes, and response to therapy.. J Am Vet Med Assoc 1977 Jan 15;170(2):183-7.
        pubmed: 833042
      5. Shively JA, Van Sickle DC. Scanning electron microscopy of equine synovial membrane.. Am J Vet Res 1977 May;38(5):681-4.
        pubmed: 879568
      6. Halata Z, Groth HP. Innervation of the synovial membrane of the cats joint capsule.. Cell Tissue Res 1976 Jun 28;169(3):415-8.
        pubmed: 949731doi: 10.1007/BF00219612google scholar: lookup
      7. Lanyon LE. Experimental support for the trajectorial theory of bone structure.. J Bone Joint Surg Br 1974 Feb;56(1):160-6.
        pubmed: 4818846
      8. Cutlip RC, Cheville NF. Structure of synovial membrane of sheep.. Am J Vet Res 1973 Jan;34(1):45-50.
        pubmed: 4683974
      9. Okada Y, Nakanishi I, Kajikawa K. Ultrastructure of the mouse synovial membrane. Development and organization of the extracellular matrix.. Arthritis Rheum 1981 Jun;24(6):835-43.
        pubmed: 7247977doi: 10.1002/art.1780240611google scholar: lookup
      10. Colles CM, Hickman J. The arterial supply of the navicular bone and its variations in navicular disease.. Equine Vet J 1977 Jul;9(3):150-4.
        pubmed: 891518doi: 10.1111/j.2042-3306.1977.tb04009.xgoogle scholar: lookup
      11. Nilsson G, Olsson SE. Radiologic and patho-anatomic changes in the distal joints and the phalanges of the standardbred horse.. Acta Vet Scand Suppl 1973;44(0):1-57.
        pubmed: 4529375
      12. Linck G, Porte A. B-cells of the synovial membrane. I. A comparative ultrastructural study in some mammals.. Cell Tissue Res 1978 Feb 24;187(2):251-61.
        pubmed: 630595doi: 10.1007/BF00224368google scholar: lookup
      13. Henrikson RC, Cohen AS. Light and electron microscopic observations of the developing chick interphalangeal joint.. J Ultrastruct Res 1965 Aug;13(1):129-62.
        pubmed: 5891445doi: 10.1016/s0022-5320(65)80093-4google scholar: lookup
      14. Calislar T, St Clair LE. Observations on the navicular bursa and the distal interphalangeal joint cavity of the horse.. J Am Vet Med Assoc 1969 Feb 15;154(4):410-2.
        pubmed: 5812885
      15. ANDERSEN H. DEVELOPMENT, MORPHOLOGY AND HISTOCHEMISTRY OF THE EARLY SYNOVIAL TISSUE IN HUMAN FOETUSES.. Acta Anat (Basel) 1964;58:90-115.
        pubmed: 14253053doi: 10.1159/000142577google scholar: lookup
      16. Johansson HE, Rejnö S. Light and electron microscopic investigation of equine synovial membrane. A comparison between healthy joints and joints with intraarticular fractures and osteochondrosis dissecans.. Acta Vet Scand 1976;17(2):153-68.
        pubmed: 952248doi: 10.1186/BF03547924google scholar: lookup
      17. CURTISS PH Jr. CHANGES PRODUCED IN THE SYNOVIAL MEMBRANE AND SYNOVIAL FLUID BY DISEASE.. J Bone Joint Surg Am 1964 Jun;46:873-88.
        pubmed: 14161107
      18. Platt H. Growth and maturity in the equine fetus.. J R Soc Med 1978 Sep;71(9):658-61.
        pubmed: 712744doi: 10.1177/014107687807100906google scholar: lookup

      Citations

      This article has been cited 2 times.
      1. Osborn ML, Cornille JL, Blas-Machado U, Uhl EW. The equine navicular apparatus as a premier enthesis organ: Functional implications. Vet Surg 2021 May;50(4):713-728.
        doi: 10.1111/vsu.13620pubmed: 33710628google scholar: lookup
      2. Gabrie A, Detilleux J, Jolly S, Reginster J-Y, Collin B, Dessy-Doizé C. Morphometric study of the equine navicular bone: age-related changes and influence of exercise. Vet Res Commun 1999 Jan;23(1):15-40.
        doi: 10.1023/a:1006102921304pubmed: 10905816google scholar: lookup
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