(n.) The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistence, but is ultimately converted into true bone and unites the fragments into a single piece.
(n.) The new formation over the end of a cutting, before it puts out rootlets.
Example Sentences:
(1) In later phases, mast cells appeared in the newly formed marrow in the external callus.
(2) The mitotic activities of various cellular components of callus tissues in different periods after tibial fracture of rat were studied with 3H-thymidine labeling and electron radioautographic method.
(3) The fractures, which appeared on roentgenograms as transverse radiolucent zones with variable callus formation, healed slowly or not at all despite treatment with calcium and vitamin D. They resembled pseudofractures (Looser's transformation zones) radiologically, but the biochemical and histologic findings were those of idiopathic osteoporosis rather than osteomalacia.
(4) The normal process of fracture healing was described in which the dual role of external callus was stressed, firstly in providing immobilisation of the fragments and secondly in providing the first bony bridge between the fragments.
(5) Pinwheel inclusions (PWs) were found in cells of callus tissue derived from explants of secondary phloem parenchyma of carrot (Daucus carota) storage root and grown on a basal medium containing zeatin and indoleacetic acid or coconut milk, naphthalene acetic acid, or combinations of these.
(6) However, we failed to demonstrate any remarkable IL-1 inhibitory activity in each fraction after gel filtration high-performance liquid chromatography of the psoriatic scale extracts or in that of extracts from the plantar callus.
(7) The lack of periosteal callus appears to be the result of a small gap and rigid fixation, rather than related to strains induced in the bone.
(8) The ages of the callus were three, five, eight, and 11 days after the fracture, that is, from before the cartilage was demonstrable on Day 5 until the enchondral bone formation started on Day 11.
(9) Biochemical analysis of the callus is reminiscent of bone from early stages of human development and normal fracture healing (e.g.
(10) Origin of roots from calluses was not accompanied by formation of buds.
(11) While some gymnasts seem more ethereal than corporeal, Beth's blisters and calluses have always been obvious.
(12) Bet v I, the major birch pollen allergen, could be extracted easily from pollen, and in low amounts from callus and leaves.
(13) In the surrounding external callus Types I, II, and III were present, but Type III was not noted in the later stages of healing.
(14) Lipids from callus cultures and suspension cultures of higher plants constitute 5 to 8% of the dry tissue's weight.
(15) Histological investigation showed that the medullary cavity was closed after 2-3 weeks, chiefly by endosteal callus.
(16) The plate-fixed bones healed more rapidly, with less periosteal callus and less angulation of the fragments, than those treated with a cast.
(17) These findings indicate that the oxygen tension around the cathode was diminished in advance of the electrically stimulated callus formation.
(18) There is increased metabolism of glycosaminoglycan collagen synthesis, and transformation of fibrous and cartilaginous callus, combined with mineralization of the latter and intensified vascular invasion into bone.
(19) Bone union can be achieved under external fixation through different pathways, ranging from callus-free gap healing under a rigid neutralization configuration to direct-contact healing with periosteal new bone formation under axially dynamized stable fixation.
(20) We compare the gene activity in heterozygotes versus homozygotes, and show variation in activity between plants regenerated independently from the same transformed callus.
Fracture
Definition:
(n.) The act of breaking or snapping asunder; rupture; breach.
(n.) The breaking of a bone.
(n.) The texture of a freshly broken surface; as, a compact fracture; an even, hackly, or conchoidal fracture.
(v. t.) To cause a fracture or fractures in; to break; to burst asunder; to crack; to separate the continuous parts of; as, to fracture a bone; to fracture the skull.
Example Sentences:
(1) after operation for hip fracture, and merits assessment in other high-risk groups of patients.
(2) It is suggested that the Japanese may have lower trabecular bone mineral density than Caucasians but may also have a lower threshold for fracture of the vertebrae.
(3) Three of the patients had had fractures of the femoral neck.
(4) Anatomic and roentgenographic criteria used for the assessment of reduction in ankle fractures are highlighted in this review of ankle trauma.
(5) The decline in the frequency of serious complications was primarily due to a decrease in the proportion of patients with open fractures treated with plate osteosynthesis from nearly 50% to 19%.
(6) Two cases of posterior lumbar vertebral rim fracture and associated disc protrusion in adolescents are presented.
(7) The most important conclusion of both conferences was that oestrogen substitution can significantly reduce the incidence of fractures in postmenopausal women.
(8) From 1978 to 1983 in the Orthopedic University Clinic (Oskar-Helene-Heim, Berlin) 75 children with fractures of the distal humerus received medical treatment.
(9) Fractures which occur near the base of the dens have a low propensity to unite spontaneously.
(10) These unusual fractures are not easily detected on the routine three-view "hand-series."
(11) Internal fixation of these pathological fractures appeared to be the best treatment.
(12) Thirteen patients had had a posterior dislocation with an associated fracture of the femoral head located either caudad or cephalad to the fovea centralis (Pipkin Type-I or Type-II injury), one had had a posterior dislocation with associated fractures of the femoral head and neck (Pipkin Type III), two had had a posterior dislocation with associated fractures of the femoral head and the acetabular rim (Pipkin Type IV), and three had had a fracture-dislocation that we could not categorize according to the Pipkin classification.
(13) The incidence of femur fracture in non-cemented hip arthroplasty has been reported to be between 4.1% and 27.8%.
(14) In open fractures especially in those with severe soft tissue damage, fracture stabilisation is best achieved by using external fixators.
(15) By measurement and analysis of the changes in carpal angles and joint spaces, carpal instability was discovered in 41 fractures, an incidence of 30.6%.
(16) Conservatively treated compressed fractures of the distal radius dorsal metaphysis healed despite primarily good reduction and consequent treatment with a decrease in dorsal length.
(17) Unstable subcapital fractures and dislocation fractures of the humerus can usually be set by closed reduction.
(18) Formation of the functional contour plaster bandage within the limits of the foot along the border of the fissure of the ankle joint with preservation of the contours of the ankles 4-8 weeks after the treatment was started in accordance with the severity of the fractures of the ankles in 95 patients both without (6) and with (89) dislocation of the bone fragments allowed to achieve the bone consolidation of the ankle fragments with recovery of the supportive ability of the extremity in 85 (89.5%) of the patients, after 6-8 weeks (7.2%) in the patients without displacement and after 10-13 weeks (11.3%) with displacement of the bone fragments of the ankles.
(19) In 17 patients with femoral neck fractures who were between 15 and 40 years old the incidence of aseptic necrosis in patients followed more than 2 years was 18.7 per cent.
(20) The fracture can be treated arthroscopically by rigid internal fixation, while at the same time treating possible associated lesions.