endosteum


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

endosteum

[en′däs·tē·əm]
(anatomy)
The membrane lining of bone marrow cavities.
Mentioned in ?
References in periodicals archive ?
The section shows a successful SSCD model in the plane perpendicular to the superior semicircular canal dehiscence with H&E staining showing the thin endosteum in the dehiscence ((a) 1 = endolymph fluid space, 2 = perilymph fluid space) and a failed SSCD model with a large fistula (b).
In addition, a loss of medullar substance and endosteum may also contribute to the delay in healing since they contain progenitor cells that contribute to bone healing [35, 46].
(29,30) However, he failed to recognize the bone forming potential of the periosteum and endosteum. (1) He reported his results with femoral lengthening where he cut through the periosteum, cortical bone, and cancellous bone.
Pain may be caused by direct invasion of the bone causing micro-fractures, increased pressure of the endosteum or distortion of the periosteum.
Thinning of the endosteum with corresponding widening of the medullary canal can be found in the area of the metaphysic bone.
According to literature, long bones have three distinct concentric layers: 1) periosteum layer, which is the first layer of bone (it is about 0.3 to 0.5 mm thick), 2) compact bone layer, and 3) endosteum layer, of about 0.1 mm thickness [2,7].
However, the procedure of screwing damages endosteum ([dagger]) integrity, resulting in endosteal absorption and consequent medullary canal widening, which may cause clinically unstable implants [87].
A characteristic of the endosteum where active bone modelling and remodelling take place is an increased [Ca.sup.2+.sub.o] concentration, which reaches 40 mM near resorbing osteoclasts (93), a level that is about 33-fold more than serum calcium levels.
Briefly, skull (frontal and parietal bones) were dissected; then the endosteum and periosteum were stripped off, and the bone was cut into approximately 1-2 [mm.sup.2] pieces and digested sequentially using trypsin (2.5 g/l) for 30 min and collagenase II (1.0 g/l) twice for 1 h each time.
The small sizes of the bone and marrow cavities and the short ranges of the alpha particles complicate accurate dose estimates to the red bone marrow and bone endosteum. This work utilizes Monte Carlo techniques to couple physical range-energy data to measurements of chords (straight-line paths) of bone and marrow cavities.
In experiments with mice, evidence indicates that viral replication can take place in the periosteum or endosteum (19).
Pain results from stimulation of pain receptors in the periosteum and endosteum, although the underlying mechanisms are poorly understood.