The effects of lengthening of the metacarpal bone on peripheral nerves and blood vessels were studied in 8 calves. Specimens for light and electron microscopy were obtained from the palmar neurovascular bundle at 1 cm (8% of the initial length), 2.5 cm (20% of the initial length), and 4 cm (33% of the initial length) of metacarpal lengthening. In 2 calves, specimens were studied 2 months after the end of the lengthening procedure. At 8% of lengthening, myelinated fibers of the palmar nerve showed moderate degenerative changes in the myelin sheath. This became severe at 20% and 33% of lengthening, and affected the axoplasm as well. At 20% of lengthening, the palmar vein started to show fibrous metaplasia of the smooth muscle tissue of the tunica media. This became much thinner than normal. The palmar artery showed moderate alterations of the inner part of the tunica media and the intima. The palmar nerve and blood vessels recovered their normal structure almost completely 2 months after the end of the lengthening procedure. The morphologic alterations of peripheral nerves and vessels may constitute the pathophysiologic basis of the nervous and circulatory disturbance observed in clinical practice.

Ippolito, E., Peretti, G., Bellocci, M., Farsetti, P., Tudisco, C., Caterini, R., et al. (1994). Histology and ultrastructure of arteries, veins, and peripheral nerves during limb lengthening. CLINICAL ORTHOPAEDICS AND RELATED RESEARCH(308), 54-62.

Histology and ultrastructure of arteries, veins, and peripheral nerves during limb lengthening

IPPOLITO, ERNESTO;FARSETTI, PASQUALE;TUDISCO, COSIMO;CATERINI, ROBERTO;
1994-11-01

Abstract

The effects of lengthening of the metacarpal bone on peripheral nerves and blood vessels were studied in 8 calves. Specimens for light and electron microscopy were obtained from the palmar neurovascular bundle at 1 cm (8% of the initial length), 2.5 cm (20% of the initial length), and 4 cm (33% of the initial length) of metacarpal lengthening. In 2 calves, specimens were studied 2 months after the end of the lengthening procedure. At 8% of lengthening, myelinated fibers of the palmar nerve showed moderate degenerative changes in the myelin sheath. This became severe at 20% and 33% of lengthening, and affected the axoplasm as well. At 20% of lengthening, the palmar vein started to show fibrous metaplasia of the smooth muscle tissue of the tunica media. This became much thinner than normal. The palmar artery showed moderate alterations of the inner part of the tunica media and the intima. The palmar nerve and blood vessels recovered their normal structure almost completely 2 months after the end of the lengthening procedure. The morphologic alterations of peripheral nerves and vessels may constitute the pathophysiologic basis of the nervous and circulatory disturbance observed in clinical practice.
nov-1994
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore MED/33 - MALATTIE APPARATO LOCOMOTORE
English
Peripheral Nerves; Animals; Cattle; Veins; Bone Lengthening; Metacarpus; Arteries; Blood Vessels; Microscopy, Electron
Ippolito, E., Peretti, G., Bellocci, M., Farsetti, P., Tudisco, C., Caterini, R., et al. (1994). Histology and ultrastructure of arteries, veins, and peripheral nerves during limb lengthening. CLINICAL ORTHOPAEDICS AND RELATED RESEARCH(308), 54-62.
Ippolito, E; Peretti, G; Bellocci, M; Farsetti, P; Tudisco, C; Caterini, R; De Martino, C
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/52208
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 62
  • ???jsp.display-item.citation.isi??? 20
social impact