At what age does the acetabulum complete ossification?
On average, the posterior wall of the acetabulum began to ossify at the chronological age of eight years, followed by a discrete rim of posterior calcification (posterior rim sign) at the patient age of twelve years, just prior to the fusion of the posterior acetabular wall elements to the pelvis.
What is the meaning of ossification?
Definition of ossification 1a : the natural process of bone formation. b : the hardening (as of muscular tissue) into a bony substance. 2 : a mass or particle of ossified tissue. 3 : a tendency toward or state of being molded into a rigid, conventional, sterile, or unimaginative condition.
What is Intramembranous and endochondral ossification?
Intramembranous ossification is the process of bone development from fibrous membranes. Endochondral ossification is the process of bone development from hyaline cartilage. Long bones lengthen as chondrocytes divide and secrete hyaline cartilage. Osteoblasts replace cartilage with bone.
What is Ossa Coxae?
The os coxa (also known as the innominate) is a paired bone which articulates with the sacrum to form the pelvis. The os coxae articulate with one another ventrally at the pubic symphisis. The pelvis anchors the leg to the axial skeleton though the articulation between the os coxa and the head of the femur.
At what age does the femoral head ossify?
Background. The ossification center of the femoral head reportedly appears at 7–8 months in 95% infants in the radiographs, but its appearance often delays in Japanese normal infants.
What is ossify in science?
Medically speaking, ossify refers to the process by which bone forms, or by which tissue (usually cartilage) changes into bone. Ossification is a natural process that starts in utero and which comprises several different steps—one of which is the deposit of calcium salts, also known as calcification.
What is another name for ossification?
In this page you can discover 13 synonyms, antonyms, idiomatic expressions, and related words for ossification, like: fossilization, hardening, induration, bone formation, ostosis, osteoblast osteoclast, conformity, endochondral, osseous, calcification and resorption.
Where does Endochondral lengthening occur?
Both endochondral and perichondral bone growth both take place toward epiphyses and joints. In the bone lengthening process during endochondral ossification depends on the growth of epiphyseal cartilage. When the epiphyseal line has been closed, the bone will not increase in length.
Where is the diaphysis?
long bone
The diaphysis is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat). It is a middle tubular part composed of compact bone which surrounds a central marrow cavity which contains red or yellow marrow.
Where is the Ossa Coxae?
hip bone
The hip bone (os coxae, innominate bone, pelvic bone or coxal bone) is a large irregular bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty) it is composed of three parts: the ilium, ischium, and the pubis.
What is the meaning of os coxae?
a large flat bone formed by the fusion of the ilium, ischium, and pubis (in the adult), constituting the anterolateral portion of the pelvic girdle; it articulates with its fellow anteriorly at the pubic symphysis, with the sacrum posteriorly at the sacroiliac joint, and with the femur laterally at the hip joint. os coxae. See innominate bone. 2os.
Why is the os coxae called the bone with no name?
Pages 226-237 Unlike many bones that earned their names due to perceived similarities with common objects, the os coxae resembles no common object and thus has earned the informal name innominate-the “bone with no name.”
What is ossify in anatomy?
Medically speaking, ossify refers to the process by which bone forms, or by which tissue (usually cartilage) changes into bone. Ossification is a natural process that starts in utero and which comprises several different steps—one of which is the deposit of calcium salts,…
How do you orientate the os coxae?
Anatomical orientation of the os coxae is accomplished by placing the hip socket laterally and the ilium superiorly; this allows the plane of the pubic symphysis (the only place where right and left os coxae nearly meet) to define the sagittal plane. The features identified here occur on both the surfaces and the edges of the os coxae.