| vaginal process of sphenoid bone | A thin lamina of bone that extends medially under the body of the sphenoid bone from the medial lamina of the pterygoid process; it articulates with the vomer and the palatine bone. Synonym: processus vaginalis ossis sphenoidalis, sheath process of sphenoid bone. (05 Mar 2000) |
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| palatine bone | An irregularly shaped bone posterior to the maxilla, which enters into the formation of the nasal cavity, the orbit, and the hard palate; it articulates with the maxilla, inferior nasal concha, sphenoid, and ethmoid bones, the vomer and its fellow of the opposite side. Synonym: os palatinum. (05 Mar 2000) |
| palatine surface of horizontal plate of palatine bone | The inferior surface of the horizontal plate of the palatine bone. Synonym: facies palatina laminae horizontalis ossis palatini. (05 Mar 2000) |
| malar bone | A quadrilateral bone which forms the prominence of the cheek; it articulates with the frontal, sphenoid, temporal, and maxillary bone. Synonym: os zygomaticum, cheek bone, jugal bone, mala, malar bone, os malare, yoke bone, zygoma. (05 Mar 2000) |
| marble bone disease | The formation of abnormally dense bone, as opposed to osteoporosis. (18 Nov 1997) |
| marginal tubercle of zygomatic bone | A prominence on the temporal border of the zygomatic bone to which the temporal fascia is attached. Synonym: tuberculum marginale ossis zygomatici, marginal tubercle. (05 Mar 2000) |
| Recklinghausen's disease of bone | Rarefying osteitis with fibrous degeneration and formation of cysts, and with the presence of fibrous nodules on the affected bones. It is due to marked osteoclastic activity secondary to hyperfunction of the parathyroid glands. (12 Dec 1998) |
| Vesalius' bone | The tuberosity of the fifth metatarsal bone sometimes existing as a separate bone. Synonym: vesalianum, Vesalius' bone. (05 Mar 2000) |
| cartilage bone | A bone that develops in a cartilage environment after the latter is partially or entirely destroyed by calcification and subsequent resorption. Synonym: cartilage bone, replacement bone. (05 Mar 2000) |
| giant cell tumour of bone | A bone tumour composed of cellular spindle-cell stroma containing scattered multinucleated giant cells resembling osteoclasts. The tumours range from benign to frankly malignant lesions. The tumour occurs most frequently in an end of a long tubular bone in young adults. (12 Dec 1998) |
| red bone marrow | Bone marrow in which the meshes contain the developmental stages of erythrocytes, leukocytes, and megakaryocytes. Synonym: medulla ossium rubra. (05 Mar 2000) |
| maxillary surface of palatine bone | The lateral surface of the perpendicular plate of the palatine bone. Synonym: facies maxillaris ossis palatini. (05 Mar 2000) |
| cavalry bone | Heterotopic bone ossification of the tendon of the adductor longus muscle from strain in horseback riding. Synonym: cavalry bone, exercise bone. (05 Mar 2000) |
| medial cuneiform bone | The largest of the three cuneiform bones, the medial bone of the distal row of the tarsus, articulating with the intermediate cuneiform, navicular, and first and second metatarsal bones. Synonym: os cuneiforme mediale, first cuneiform bone, wedge bone. (05 Mar 2000) |
| replacement bone | A bone that develops in a cartilage environment after the latter is partially or entirely destroyed by calcification and subsequent resorption. Synonym: cartilage bone, replacement bone. (05 Mar 2000) |