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The end portion of a long bone in vertebrates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the jointed end of a tubular bone. The epiphyseal cartilage (known as growth plate) found between the epiphysis and the diaphysis plays a major role in the growth of bone lengthwise, becoming ossified between the ages of 12 and 25 years.

Injury to the epiphysis in childhood or adolescence may cause epiphysiolysis—that is, displacement of the epiphysis and rupture of the epiphyseal cartilage, which may slow down the bone’s growth and result in its shortening. A more frequent condition is osteoepiphysiolysis, in which the fracture line extends to the diaphysis as well.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
By positioning an extruding femoral head in a more covered position, there is a theoretical benefit for accelerated healing, decrease in fragmentation of the epiphysis, and potential change in the vascular supply.
The stages of maturity and union of the medial clavicular epiphysis were then observed and recorded chronologically according to the scoring system of Schmeling et al.
Pin is placed from the distal epiphysis of the radial styloid obliquely across the physis into the more proximal ulnar aspect of the radial metaphysis.
Exclusion criteria were fracture of the epiphysis, congenital anomaly of the bones, and/or bone disease.
CT scan confirmed the diagnosis of epiphysiolysis of the medial clavicular epiphysis (Figures 3(a) and 3(b)).
Magnetic resonance imagining (MRI) demonstrated a nonspecific infiltrative process involving the left distal medial femoral epiphysis, extending proximally along the posterior femoral cortical surface, appearing dark on T1 and bright on STIR and T2 weighted images (Figure 2).
In young people, it preferentially occurs in the epiphysis of long tubular bones, with the most common sites being the proximal tibia or femur, distal femur, and proximal humerus.
Figure 4: AP pelvis X-ray obtained 12 weeks from initial presentation with progressive flattening of femoral epiphysis indicative of segmental collapse seen in non-Perthes osteonecrosis.
Signs of osteophagic activity on cervical, thoracic, and lumbar vertebrae, on five ribs, scapula, and also on the humerus and femoral epiphysis were observed.
Therefore, we focused on the distribution of PEDF within different human cartilaginous tissues of different developmental stages that are subjected to endochondral ossification, including the fetal epiphysis, the postnatal growth plate, and adult articular and osteophytic cartilage.
To the Editor: Slipped capital femoral epiphysis (SCFE) is the most common hip disorder affecting adolescents and has multifactorial aetiology.
The epiphysis is separated from the shaft of the bone by a layer of cartilage, called the epiphyseal plate or growth plate.