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Which age close growth plates?

During the growth and development of children, there is a crucial element that plays a significant role in determining their overall height and skeletal structure – growth plates. These growth plates, also known as epiphyseal plates, are areas of cartilage found at the ends of long bones. They are responsible for enabling bone growth and development until they eventually close. Understanding when these growth plates close is essential in predicting how tall a child will become and assessing their overall growth and development.

One common question that arises in this context is: at what age do growth plates typically close? The answer to this question differs between genders and individuals. On average, girls’ growth plates close when they’re about 14-15 years old, while boys’ growth plates close around the time they turn 16-17. However, it’s important to note that there is significant variation among individuals and different bones’ growth plates close at different times.

Growth Plates in Girls

Growth plate closure in girls generally occurs a few years earlier than in boys. The average age at which girls’ growth plates close is between 14 and 15 years old. However, it’s important to remember that this is just an average, and some girls may experience growth plate closure earlier or later.

Several factors influence the timing of growth plate closure in girls. Genetics play a significant role, as growth patterns tend to run in families. Hormonal changes during puberty also contribute to the closure of growth plates. Estrogen, in particular, promotes fusion of the growth plates.

The closure process of growth plates in different bones may vary. For example, the growth plates in the long bones of the legs (femur and tibia) tend to close earlier than those in the spine or the bones of the hands and feet.

Growth Plates in Boys

Boys typically experience growth plate closure a few years later than girls. On average, boys’ growth plates close around the age of 16-17. However, as with girls, there is variation among individuals in the timing of growth plate closure.

Similar to girls, genetics and hormones play important roles in determining the timing of growth plate closure in boys. Testosterone, the primary male sex hormone, affects bone growth and can influence the closure of growth plates.

Just like in girls, the closure process of growth plates in boys can differ depending on the bone. Some growth plates may close earlier than others, leading to potential differences in height and skeletal development.

Individual Variations

While there are average ages at which growth plates close, it’s essential to recognize that there is considerable individual variation. Some children may experience growth plate closure earlier than the average, while others may undergo this process later. It’s crucial to consider these individual variations when assessing growth and development.

Several factors contribute to the variability in growth plate closure. Genetics play a significant role, as growth patterns can be inherited from parents. Nutrition and overall health also play a role, as malnutrition or certain health conditions can impact the closure process. Additionally, factors such as physical activity levels and hormones can influence the timing of growth plate closure.

Importance of Growth Plate Closure

The closure of growth plates is crucial for reaching adult height and ensuring proper skeletal development. Once growth plates close, further bone growth in length is no longer possible. Therefore, it’s important to monitor the closure process during adolescence to be aware of any potential growth-related concerns.

Premature or delayed closure of growth plates can have various implications. If growth plates close earlier than expected, it may result in a shorter stature. On the other hand, delayed closure can lead to prolonged growth and potentially taller stature. These variations can impact an individual’s self-esteem and overall well-being.

In addition to height implications, growth plate closure also affects skeletal health and injury risk. Closed growth plates contribute to the stability and strength of bones. Injuries that occur near growth plates can affect their closure process and potentially lead to long-term complications.

Monitoring and Assessment

To track the closure of growth plates and assess overall growth and development, monitoring is crucial during adolescence. Regular check-ups with healthcare providers, including pediatricians or orthopedic specialists, can help determine the progress of growth plate closure. These professionals may use various techniques, such as measuring height and monitoring growth patterns over time, to assess the status of growth plates.

In some cases, imaging techniques, such as X-rays or MRI scans, may be used to evaluate growth plate closure. These imaging methods provide detailed information about the growth plates, bone development, and any potential abnormalities or concerns.

Regular monitoring and assessment of growth plate closure are essential for identifying any potential growth-related issues early on. Early intervention and appropriate medical guidance can help address these concerns and ensure optimal growth and development.


Understanding when growth plates close is vital for predicting height, assessing growth patterns, and monitoring overall growth and development in children and adolescents. While girls’ growth plates typically close around the age of 14-15, boys’ growth plates tend to close a few years later, around 16-17. However, individual variations and different closure times for various bones highlight the need for personalized monitoring.

Factors such as genetics, hormones, nutrition, and overall health contribute to the variability in growth plate closure. It’s crucial to recognize the importance of growth plate closure in reaching adult height, skeletal health, and injury risk. Regular check-ups and assessments aid in monitoring the closure process and ensuring appropriate intervention if needed.

By understanding the significance of growth plate closure and actively monitoring it, healthcare providers and parents can support optimal growth and development in children and provide appropriate medical guidance along the way.


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