• Title, Summary, Keyword: ossification center

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The Fine Structure of the Femoral Epiphysis of Growing Mouse: Endochondral Osteogenesis (생쥐 대퇴골단(大腿骨端) 골형성(骨形成)에 관(關)한 전자현미경적(電子顯微鏡的) 연구(硏究))

  • Yoon, Jae-Rhyong;Kim, Yong-Joo;Oh, Chang-Seok
    • Applied Microscopy
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    • v.24 no.1
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    • pp.59-76
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    • 1994
  • Fine structure of the distal femoral epiphysis of growing mouse was studied by electron microscopy. The first morphological evidence of developing secondary center of ossification in the distal femoral epiphysis was found at newborn mouse. Ossification center was in the form of multiple foci of calcification and its cells were represented by remnant of degenerated cells within large lacunae that were separated by mineralized cartilaginous septa. Endochondral ossification beneath the articular cartilage proceeded in a less orderly manner than metaphyseal endochondral ossification. Columns of hypertrophied chondrocytes were not distinctly parallel to intercellular mineralized septa in all direction. Hypertrophied chondrocytes in the inner zone of the epiphseal center of ossification showed disintegrated. Resorption of mineralized cartilaginous septa was undertaken by perivascular cells and multinucleated chondroclasts. Resorption of the calcified cartilage was restricted to the region of ruffled border of the chondroclast. Growth along the metaphyseal side of the epiphyseal center of ossification was different from that along the articular surface. As the secondary center expanded toward the metaphyseal side, many vascular buds penetrated unmineralized cartilaginous septa and invaded viable chondrocytes. Many hypertrophied chondrocytes bodering the metaphyseal side of bone center remained viable after they became embedded in mineralized cartilaginous septa. This result suggested that the hypertrophied.

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ASSESSMENT OF SKELETAL AGE (완골의 X-선학적 계측)

  • Ahn Hyoung Kyu
    • The Journal of Korean Academy of Maxillofacial Radiology
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    • v.1 no.1
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    • pp.21-27
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    • 1971
  • The author investigated the carpal bone and ephiphyses on the roentgenographic films. Several methods have been used in the study of carpal bones but I have calculated the numbers of ossification center. The subjects consisted of 259 boys and 239 girls from 3 to 13 years of age. The results are summerized as follows; 1. The number of ossification center were increased in aging both boys and girls. 2. Ossification tendency was more faster boys than girls and the difference of left and right hand were non significant. 3. The ossification of ephiphyses was completed in 4 years of age.

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Heterotopic Ossification of a Partially Ruptured Achilles Tendon (A Case Report) (아킬레스 건 부분 파열 후 발생한 이소성 골화(1예 보고))

  • Kwak, Ji-Hoon;Kim, Dong-Hee;Park, Hong-Gi
    • Journal of Korean Foot and Ankle Society
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    • v.13 no.1
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    • pp.99-102
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    • 2009
  • Heterotopic ossification of Achilles tendon is known to be related with history of prior Achilles tendon surgery, trauma, Achilles tendon rupture. We report a case of heterotopic ossification of partially ruptured Achilles tendon and treated by surgical removal of ossification and V-Y advancement with tendon repair.

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Unusual Isolated Complete Tear of Subscapularis and Biceps Long Head Tendon Associated with Heterotopic Ossification

  • Sohn, Hoon-Sang;Baek, Duck In;Shon, Min Soo
    • Clinics in Shoulder and Elbow
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    • v.17 no.3
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    • pp.127-133
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    • 2014
  • Heterotopic ossification (HO) within the substance of the subscapularis tendon is a rare lesion which remains a poorly described condition with little known of the exact mechanisms involved. Furthermore, its clinical importance remains still unclear. To our knowledge, there are no studies present to data regarding HO within the substance of the subscapularis tendon, even with resultant isolated complete tear of the subscapularis tendon. Here we present a case of huge HO associated with unusual isolated complete tear of subscapularis tendon concomitant with tear of biceps long head tendon. After arthroscopic debridement for the complete tear site of biceps long head tendon, mini-open excision of the ossification and subscapularis repair with suture anchor fixation were performed. The patient showed complete recovery of strength and function of the subscapularis at subsequent 24 months follow up.

Total Ankylosis by Heterotopic Ossification in an Adolescent Anterior Trans-olecranon Fracture Dislocation: A Case Report

  • Kim, Beom-Soo;Song, Kwang-Soon;Bae, Ki-Cheor;Lee, Si-Wook;Um, Sang-Hyun;Cho, Chul-Hyun
    • Clinics in Shoulder and Elbow
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    • v.22 no.3
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    • pp.154-158
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    • 2019
  • The incidence of heterotopic ossification in adolescents appears to be lower than in adults. There exist very few reports of heterotopic ossification with total bony ankylosis in child or adolescent populations. We describe a case of total bony ankylosis of the elbow secondary to heterotopic ossification, in a 14-year-old female. Total ankylosis of the elbow at 45 degrees of flexion was noted 6 months postsurgery, and complete surgical excision of the heterotopic mass was performed. After an additional one-time dose of radiation therapy and nonsteroidal anti-inflammatory drug medication, full range of motion was obtained without any recurrence or other complications, up to the last follow-up of 30 months.

Ossification of the Coracoacromial Ligament in Subacromial Impingement Syndrome: A Case Report

  • Moon, Kyupill;Hwang, Youn Soo;Kim, Kyung Taek;Kim, Jin Wan;Chae, Jeong Hoon
    • Clinics in Shoulder and Elbow
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    • v.20 no.3
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    • pp.167-171
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    • 2017
  • Here, a case of a 59-year-old man with rotator cuff tear and impingement syndrome caused by an ossified coracoacromial ligament is presented. Ossification of the coracoacromial ligaments can occur because of degenerative changes due to trauma or repeated stress, which can lead to impingement syndrome. Therefore, when coracoacromial ligament ossification is present, rotator cuff damage due to impingement syndrome should be considered. Here, we conducted arthroscopic subacromial decompression, removal of the ossified coracoacromial ligament, and supraspinatus and subscapularis tendon repairs. We achieved satisfactory surgical outcomes without relapse; therefore, we report this case with a literature review.

The Ultrastructure of Osteogenesis in Distal Extremity of the Distal Phalanges of Human Fetus (인태아 수지말절골의 골화에 관한 전자현미경적 연구)

  • Yoon, Jae-Rhyong;Kim, Sang-Yong;Nam, Kwang-Il
    • Applied Microscopy
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    • v.26 no.2
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    • pp.177-195
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    • 1996
  • Fine structure of the processes of intramembranous ossification and endochondral ossification at the tip of the distal phalanx of human fetuses was studied by electron microscopy. In 50 mm fetus, intramembranous ossification of the tip of cartilaginous phalanx was first noted. The osteoblasts of the perichondral zone of tip of cartilaginous phalanx started to lay down a thick membranous bony lamella. Most of the hypertrophied chondrocytes in the marginal parts of tip of the distal phalanx remained viable after being embeded in mineralized cartilaginous septa. The tuberosity of the distal phalanx was formed by membranous bony trabeculae on the exterior of the subperiosteal cap at 80 mm fetus. At this stage endochondral ossification was first observed in distal extremity of the distal phalanx. The maority of hypertrophied chondrocytes in the center of distal extremity appeared to be disintegrating. Resorption of calcified matrix was undertaken by perivascular cells and chondroclasts. From the periosteum, zone of calcification, vascular sprouts expanded within a recently opened lacunae, and the invading osteoblasts laid down osteoid and bone. After 120 mm fetus, endochondral and subperiosteal ossification proceeded in only one direction, just proximally. These findings demonstrate that intramembranous ossification, calcification, and endochondral ossification start at tip of the distal phalanx instead of at the center of the shaft, as was the case in other long bones.

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Early Osteological Development of Larvae and Juveniles in the Korean Spotted Sleeper Odontobutis interrupta from Korea (한국산 얼록동사리(Odontobutis interrupta) 자치어의 골격발달)

  • Park, Jae Min;Han, Ji Hyeong;Yun, Seong Min;Han, Kyeong Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.50 no.4
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    • pp.396-405
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    • 2017
  • We observed the osteological development in larvae and juveniles of Korean spotted sleeper Odontobutis interrupta bred in the laboratory in April 2014. Immediately after hatching, the prelarvae, which were about 4.27 mm long, showed ossification of the premaxillary bones in the upper jaw and the dentary and articular bones in the lower jaw. At 7.11 mm, the larvae showed complete fusion of the post-cleithra and ossification of the scapulae with the appearance of one hole. At 8.65 mm, the larvae showed ossification of seven ribs from the third abdominal vertebra and an increase in the length of the neural spine and hemal spine. The number of caudal fin rays increased to 19. At 11.9 mm, the juveniles showed ossification of three procurrent rays on the side of the parhypural bone as well as ossification of two procurrent rays on the side of the epural bone, indicating the complete ossification of all spicules.

A histological study on the development of scapula in the Korean native cattle (한우 태자의 견갑골 발생에 관한 조직학적 연구)

  • Park, Moon-euk;Yang, Hong-hyun;Paik, Young-ki;Lee, Han-kyoung
    • Korean Journal of Veterinary Research
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    • v.32 no.3
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    • pp.309-319
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    • 1992
  • This study was undertaken to establish the sequence of development of ages and its time of the fetal endochondral ossification in the scapula of the Korean native cattle. This study was also designed to confirm through histological observation the earliest stages of both chondrification and ossification. Thirty eight scapulae, a series of embryos and fetuses from the pregnant Korean native cattle ranging from 11 to 110mm in crown-rump (C-R) length, were used. The following results were obtained. The ossification center was observed in the supra- and infra- spinous fossa in the 5th group (CRL 51-60mm), that was markedly ossified in the 6th group (CRL 61~70mm) by Alizarin red S stain. The chondrogenic center of scapula was observed in the 1st group (CRL 11~20mm). The primary ossification center was presented in the 4th group (CRL 41~50mm). In the 5th group(CRL 51~60mm), the endochondral ossification progressed actively. Alcianophility was markedly increased in the interterritorial matrix in the 3rd group (CRL 31~40mm. However this reaction was markedly decreased in the interterritorial matrix the adjacent portion to the marrow cavity and trabecula in the 5th group (CRL 51~60mm).

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Early Osteological Development of Larvae and Juveniles in Red Spotted Grouper, Epinephelus akaara (Pisces: Serranidae)

  • Park, Jong Youn;Han, Kyeong Ho;Cho, Jae Kwon;Myeong, Jeong In;Park, Jae Min
    • Development and Reproduction
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    • v.20 no.2
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    • pp.65-79
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    • 2016
  • We observed the osteological development of larval and juvenile red spotted grouper (Epinephelus akaara) in order to generate data for the assessment of skeletal deformities and to inform phylogenetic systematics research. Larvae and juveniles were obtained from a aquafarm in Muan-gun, Jeolla-namdo Province, Korea. The average water temperature at the time of breeding was $23.0^{\circ}C$ and average water salinity was 33.0 psu. Freshly hatched fish larvae had not undergone any ossification, but ossification of the parasphenoid bone, which forms the base of the cranium, occurred as the juveniles reached an average body length (BL) of 2.49 mm. At the same time, ossification of the preopercle and opercle occurred in the operculum, and ossification of the maxilla, which forms the upper jaw, and the dentary bones, which form the lower jaw, began. In addition, ossification of the vertebra occurred by formation of 7 vertebral centra and the neural spine in the abdominal vertebra. When the juveniles reached an average (BL) of 5.22 mm, ossification of the nasal, lateral ethmoid, and alisphenoid bones occurred in the cranium; ossification of the endopterygoid and metapterygoid bones began in the palatine region; and ossification of the hypohyal and interhyal bones occurred in the hyoid arch. At an average (BL) of 20.9 mm, ossification of the basisphenoid bone in the cranium and the suborbital bone in the orbital region occurred. Ossification of the vertebra then occurred by the formation of long pairs of ribs from the third to the ninth abdominal vertebrae, completing osteological development.