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Achondroplasia: Genetics and Management
Student Name
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Professor Name
Course Name and Code
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Achondroplasia: Genetics and Management
Description of Pathology
Achondroplasia is a genetically determined skeletal disease that causes short stature. It is the
most common type of dwarfism with an incidence of 1 in 15,000 to 40,000 live births
worldwide. The disorder is caused by a mutation that interferes with normal bone growth and
development. The disorder mainly affects long bones, causing shortening of the arms and legs,
macrocephaly, and a normal-sized torso. Patients with this condition can have an impressive
forehead and a lack of nasal bridge (Wrobel et al., 2021; Fafílek et al., 2022).
The physical appearance is also impacted, although intelligence and life expectancy are generally
normal. Others may develop spinal stenosis, ear infection, and breathlessness. Achondroplasia is
an autosomal dominant disease, meaning that only one copy of the mutated gene is required to
cause the disease. However, most cases are caused by mutations that occur in families without
prior disease. To gain a clear understanding of this disorder, the usual structure and functioning
of the skeletal system must be investigated, and then the mechanisms of its formation should be
discussed, as noted by Savarirayan et al. (2021).
Normal Anatomy of the Major Body System Affected
, 2
Achondroplasia primarily affects the skeletal and central nervous systems. The skeletal system
provides the body with structure and protection and aids in body movement. The humerus and
the femur are the most important parts of the appendicular skeleton. A long bone has a long
shaft, the diaphysis, and two ends, the epiphyses, which are flared (Zhang et al., 2024). The
growth plate or epiphyseal plate is the growth in the middle of a growing child between the
epiphysis and the diaphysis. This plate is composed of hyaline cartilage, which serves as a site
for bone growth. The distribution of the cartilage cells (chondrocytes) is well-ordered in some
regions of the plate. This growth plate chondrocyte structure is required for subsequent bone
maturation and growth. The cranium, pelvis, and vertebrae also play significant roles in everyday
functioning and development (Wrobel et al., 2021).
Normal Physiology of the Major Body System Affected
Bone development is called endochondral ossification. This is a process in which cartilage is
replaced by bone during a child’s growth. Chondrocytes are cells found in the growth plate.
These cells proliferate, enlarge, and eventually form bones. This is controlled by growth-
controlling hormones (Fafilek et al., 2022; Savarirayan et al., 2021). One of the most important
regulators of this process is the fibroblast growth factor receptor, which regulates the conversion
of cartilage into bone. In normal development, bones lengthen and shape as related to the activity
of the receptor. The pituitary gland produces growth hormone, which stimulates bone cell
division and growth. Calcium and phosphorus are needed for mineralization, as well as vitamin
D (Wrobel et al., 2021).
Skeletal remodeling is the process by which bones remodel. This gives strength and post-
traumatic healing. The normal physiology of bones supports the body, holds it up, and protects
Achondroplasia: Genetics and Management
Student Name
Institution Affiliation
Professor Name
Course Name and Code
Assignment Due Date
Achondroplasia: Genetics and Management
Description of Pathology
Achondroplasia is a genetically determined skeletal disease that causes short stature. It is the
most common type of dwarfism with an incidence of 1 in 15,000 to 40,000 live births
worldwide. The disorder is caused by a mutation that interferes with normal bone growth and
development. The disorder mainly affects long bones, causing shortening of the arms and legs,
macrocephaly, and a normal-sized torso. Patients with this condition can have an impressive
forehead and a lack of nasal bridge (Wrobel et al., 2021; Fafílek et al., 2022).
The physical appearance is also impacted, although intelligence and life expectancy are generally
normal. Others may develop spinal stenosis, ear infection, and breathlessness. Achondroplasia is
an autosomal dominant disease, meaning that only one copy of the mutated gene is required to
cause the disease. However, most cases are caused by mutations that occur in families without
prior disease. To gain a clear understanding of this disorder, the usual structure and functioning
of the skeletal system must be investigated, and then the mechanisms of its formation should be
discussed, as noted by Savarirayan et al. (2021).
Normal Anatomy of the Major Body System Affected
, 2
Achondroplasia primarily affects the skeletal and central nervous systems. The skeletal system
provides the body with structure and protection and aids in body movement. The humerus and
the femur are the most important parts of the appendicular skeleton. A long bone has a long
shaft, the diaphysis, and two ends, the epiphyses, which are flared (Zhang et al., 2024). The
growth plate or epiphyseal plate is the growth in the middle of a growing child between the
epiphysis and the diaphysis. This plate is composed of hyaline cartilage, which serves as a site
for bone growth. The distribution of the cartilage cells (chondrocytes) is well-ordered in some
regions of the plate. This growth plate chondrocyte structure is required for subsequent bone
maturation and growth. The cranium, pelvis, and vertebrae also play significant roles in everyday
functioning and development (Wrobel et al., 2021).
Normal Physiology of the Major Body System Affected
Bone development is called endochondral ossification. This is a process in which cartilage is
replaced by bone during a child’s growth. Chondrocytes are cells found in the growth plate.
These cells proliferate, enlarge, and eventually form bones. This is controlled by growth-
controlling hormones (Fafilek et al., 2022; Savarirayan et al., 2021). One of the most important
regulators of this process is the fibroblast growth factor receptor, which regulates the conversion
of cartilage into bone. In normal development, bones lengthen and shape as related to the activity
of the receptor. The pituitary gland produces growth hormone, which stimulates bone cell
division and growth. Calcium and phosphorus are needed for mineralization, as well as vitamin
D (Wrobel et al., 2021).
Skeletal remodeling is the process by which bones remodel. This gives strength and post-
traumatic healing. The normal physiology of bones supports the body, holds it up, and protects
