Related Experiment Video
Updated: Jul 16, 2026

07:35
Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
Published on: April 11, 2012
Monostotic fibrous dysplasia
Enzo A Cento1, Laurie M Lomasney, Terrence C Demos
1Department of Radiology, Loyola University, Medical Center, Maywood, IL 60153, USA.
Orthopedics
|February 28, 2007
Summary
Fibrous dysplasia is usually a benign, solitary bone lesion. Early recognition of its imaging features, like the "ground-glass" pattern, aids diagnosis and management.
Area of Science:
- Orthopedic Surgery
- Radiology
- Medical Genetics
Background:
- Fibrous dysplasia is a benign bone disorder where normal bone is replaced by fibrous tissue.
- It most commonly presents as a monostotic (single bone) lesion, often asymptomatic.
- Polyostotic (multiple bones) fibrous dysplasia can be associated with syndromes like McCune-Albright syndrome.
Observation:
- The characteristic imaging appearance includes a "ground-glass" pattern of mineralization.
- Medullary expansion of the affected bone is another common finding.
- Radiographic and CT imaging are crucial for diagnosis.
Findings:
- Monostotic fibrous dysplasia is typically an incidental finding in asymptomatic individuals.
- Polyostotic forms and associated syndromes can lead to significant morbidity.
- Surgical intervention may be required for complications and deformities.
Implications:
- Familiarity with fibrous dysplasia imaging can lead to earlier diagnosis and prevent unnecessary investigations.
- Accurate diagnosis and understanding of potential syndromes are vital for patient management.
- Imaging plays a key role in treatment planning and monitoring disease progression.
More Related Videos
Related Concept Videos
Structural Joints: Fibrous Joints
Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Nondisjunction
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
Nondisjunction
During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.
Sex-linked Disorders
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Desmosomes
The term desmosome derives from the Greek words "desmo" and "soma" meaning "adhesion bodies." This structure was first observed during the late 1800s and described as small, dense nodules in the epidermis. Desmosomes are button-like structures that help form an interlinked network of intermediate filaments across the cells. These junctions are essential to hold cells together under mechanical stress and to maintain tissue integrity. Desmosomes are multi-protein complexes comprising desmosomal...
Bone Formation by Intramembranous Ossification
Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...

