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Apophysitis – Causes, Symptoms and Treatment

Apophysitis is a painful overuse condition affecting the apophysis, a bony growth area in children and adolescents, commonly caused by repetitive physical stress.

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Apophysitis is a painful overuse condition affecting the apophysis, a bony growth area in children and adolescents, commonly caused by repetitive physical stress.

What is Apophysitis?

Apophysitis refers to a painful condition affecting the apophysis – a bony prominence or attachment site where tendons or muscles connect to a bone. These growth cartilage areas are not yet fully ossified in children and adolescents, making them particularly vulnerable to mechanical stress. Apophysitis typically occurs during periods of rapid growth and is especially common in physically active young people.

Causes

The most common cause of apophysitis is chronic overuse resulting from repetitive traction forces on the immature apophysis. Children and teenagers who participate in high-intensity sports such as football, athletics, gymnastics, or basketball are most at risk. Additional contributing factors include:

Rapid growth spurts that reduce muscle and tendon flexibility
Muscular imbalances or tight muscle groups
Sudden increases in training intensity or frequency
Insufficient recovery time between training sessions
Inappropriate or worn-out footwear

Common Locations

Apophysitis can occur at various sites in the body. The most well-known clinical presentations include:

Osgood-Schlatter disease: Apophysitis at the tibial tuberosity, common in active adolescents
Sever disease: Apophysitis at the calcaneal apophysis (heel bone), typical in school-age children
Iselin disease: Apophysitis at the base of the fifth metatarsal
Pelvic apophysitis: Occurring at sites such as the anterior superior iliac spine or ischial tuberosity

Symptoms

The symptoms of apophysitis are usually well-localized and characteristic of overuse injuries:

Localized pain at the affected apophysis, especially during physical activity
Swelling and tenderness over the affected bony prominence
Reduced athletic performance
Pain when stretching the associated muscle group
Significant improvement or absence of symptoms during rest

Diagnosis

Apophysitis is primarily diagnosed clinically through a thorough medical history and physical examination. The clinician assesses sporting habits, recent growth spurts, and the precise nature and location of the pain. The following investigations may also be used:

X-ray: To evaluate bone structure and rule out fractures or other pathologies
Ultrasound: To assess soft tissue changes and signs of inflammation
MRI (Magnetic Resonance Imaging): In cases with unclear findings or suspected complications

Treatment

The treatment of apophysitis is primarily conservative and is guided by the severity of symptoms:

General Measures

Rest from sport or significant reduction in training load
Application of ice or cold packs to the affected area for pain relief
Pain relief medication (e.g., ibuprofen) as advised by a doctor

Physiotherapy

Targeted stretching and strengthening exercises for the affected muscle groups
Manual therapy to improve joint mobility
Gait retraining and biomechanical correction in cases of foot malalignment

Assistive Devices

Orthotic insoles (e.g., for Sever disease)
Braces or taping to offload the apophysis

Surgical Treatment

Surgery is very rarely required for apophysitis and is reserved for exceptional cases such as bony avulsion of the apophysis or symptoms that do not respond to conservative treatment.

Prognosis

The prognosis for apophysitis is generally excellent. Once skeletal maturity is reached and the apophysis has fully ossified, most affected individuals experience a complete resolution of symptoms. Early treatment and consistent load reduction help shorten the duration of symptoms and prevent complications.

References

Geidel, H. & Liebs, T. R. (2017). Growth disturbances and apophyseal injuries in children and adolescents. Orthopadie und Unfallchirurgie up2date, 12(1), 67–84.
Letts, M. et al. (2009). Apophyseal injuries in young athletes. Clinical Journal of Sport Medicine, 19(6), 483–489. PubMed PMID: 19898082.
World Health Organization (WHO) – Physical Activity and Youth Health: Recommendations for Safe Training Practices in Children and Adolescents. WHO Guidelines, Geneva.

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