bones definition

The main chemical compound in bone, deposited as minute amorphous crystals in a netlike matrix of collagenous fibres containing collagen; it closely resembles the naturally occurring fluorapatite 3Ca3(PO4)2-CaF2, but is probably a hydroxyapatite in which F is replaced by OH.

<investigation>

<radiology> A study of the body skeleton. A dose of radioactive substance is injected and the scan (taken a little time later) reads the distribution of the radioactivity.

(16 Dec 1997)

<radiology> Anaplastic tumours, reticulum cell sarcoma, renal cell carcinoma, thyroid carcinoma, histiocytosis, neuroblastoma, multiple myeloma (positive scan usually due to recent or impending fracture)

(12 Dec )

Preferred term: eburnation

Preferred term: pallesthesia

<botany> A medicinal plant, the thoroughwort (Eupatorium perfoliatum). Its properties are diaphoretic and tonic.

<medicine>

Preferred term: sciatica

The phalanges and sesamoid bones of the fingers and toes.

Synonyms: ossa digitorum.

Preferred term: bones of lower limb

These include the inferior limb girdle (hip bone) and the skeleton of the free inferior limb (femur, tibia, fibula, patella, tarsus, metatarsus, and bones of the toes).

Synonyms: ossa membri inferioris, bones of inferior limb.

The paired inferior nasal concha, lacrimal, maxilla, nasal, palatine, parietal, temporal, and zygomatic; and the unpaired ethmoid, frontal, occipital, sphenoid, and vomer.

Synonyms: ossa cranii, cranial bones.

Preferred term: bones of upper limb

The bones of the upper and lower arm. They include the clavicle and scapula.

(12 Dec )

These include the superior limb girdle (scapula and clavicle) and the skeleton of the free superior limb (humerus, radius, ulna, wrist bones, metacarpus, and bones of the fingers).

Synonyms: ossa membri superioris, bones of superior limb.

Preferred term: facial bones

A rarefying osteitis involving the bones of the tarsus of the horse, usually those on the medial surface, resulting in exostoses and ankylosis.

Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.

(12 Dec )