Histological findings such as the amount of fibrous tissue, cartilaginous tissue, osteoid tissue
ratios, and level of bone healing graded according to Huo scores were compared using the Mann Whitney U test.
It is characterized by architectural deterioration of osteoid tissue
and reduced bone density, making the bones fragile.
Quantification of the percentage of osteoid tissue
on bone lamellae surface was performed using ImageJ software and was determined as area of the osteoid tissue
section/(area of the mineralized bone lamellae section x area of the osteoid tissue
Rat alveolar bone is dense and it has no osteons and marrow spaces while there is less amount of osteoid tissue
along the bone surface of alveolus as compare to humans.21 In few studies, it has been reported that acid mucopolysaccaride is less in the rat bone.
Aneurysmal bone cyst (ABC) is a rare benign bone tumor that contains blood-filled cavernous spaces separated by septa containing osteoid tissue
and osteoclast giant cells [1-3].
Adhesion of capillary buds and perivascular osteogenic cells forming the layers of osteoid tissue
is noted on the implant surface.
Osteosarcoma (OS) is an mesenchymal malignant bone tumor characterized by formation of disorganized immature woven bone or osteoid tissue
with a reported incidence of 1:100,000 per year.
New osteoid tissue
was observed in the pore structure, and osteoblast infiltration was seen on the surface of the implant.
In addition, DKO model provides similarities in X-ray analysis with human OS by revealed sunburst pattern which indicate osteoid tissue
(osseous before calcification stage) (24).
It is composed of osteoid tissue
and is surrounded by a halo of reactive hyperostosis.
These radiographic changes have been ascribed to failing mineralization of osteoid tissue
leading to increased thickness of growth plate and bending of long bones resulting into lameness and inability to bear weight properly (Rosol and Capen, 1997).Thickening of costochondral junction was also evident in a few chest radiographs (Fig.
Osteoblastic osteosarcomas accounted for 17.64% (3/17) of all cases, being characterized by a major component of osteoid tissue
with anaplastic and pleomorphic malignant cells characterized by vesiculated nuclei and large nucleoli (7).