Related Experiment Videos
[Structure and configuration of human tendons. II. Development of tendon structure during ontogenesis]
Insights
Premature infants show varying tendon development. Hand flexor tendons mature earlier than lower extremity flexor tendons, while lower extremity extensor tendons develop postnatally.
Area of Science:
- Histology
- Developmental Biology
- Orthopedics
Context:
- Investigates the prenatal and early postnatal development of tendon structures in preterm infants born between 24-30 weeks of gestation.
- Utilizes advanced photo- and polarization microscopy techniques to analyze tissue organization.
Purpose:
- To compare the developmental timelines of different muscle group tendons in preterm infants.
- To identify specific tendons that exhibit mature structure earlier in fetal development.
Summary:
- Tendons of the flexor hand muscles (M. flexor carpi radialis, M. flexor digitorum comm.) demonstrate a more mature structure earlier in prenatal development compared to lower extremity flexor tendons (M. semitendinosus femoris, M. triceps surae).
- Tendons of the extensor muscles of the lower extremity (M. quadriceps femoris, M. tibialis ant.) are found to be underdeveloped and disorganized during fetal life, with their structural organization occurring primarily after birth.
Impact:
- Provides crucial insights into the differential maturation rates of tendons in extremely preterm infants.
- Informs potential therapeutic strategies and timing for interventions related to musculoskeletal development in this vulnerable population.
- Contributes to a deeper understanding of fetal musculoskeletal development and its implications for long-term orthopedic health.
Abstract:
In infants born in the 24th--30th weeks of the gravidity the praenatal development and the process of the organization of the tendinous structure have been examined by the authors. By means of photo- and polarization microscopic examinations it was found that the tendon of the flexor hand muscles (M. flexor carpi radialis, M. flexor digitorum comm.) shows mature tendinous structure earlier, than the tendons of the flexor muscles of the lower extremity (M. semitendinosus femoris, M. triceps surae). The tendons of the extensor muscles of the lower extremity (M. quadriceps femoris, M. tibialis ant.) are underdeveloped and inordinate in the foetal life--their structure develops only during the postnatal life.