Heel fat pad syndrome often causes pain in almost the same location as plantar fasciosis, which is one of the reasons it is frequently overlooked. However, the pattern of symptoms is usually quite different. Recognising these differences is important because the treatment for heel fat pad syndrome focuses on protecting the heel's natural shock absorber rather than treating the plantar fascia.
The most common symptom is pain directly beneath the centre of the heel. Patients often describe the sensation as though they are "walking on bone" or "walking on a bruise." Unlike plantar fasciosis, where pain is usually concentrated near the inside of the heel at the attachment of the plantar fascia, heel fat pad syndrome typically produces tenderness over the middle of the heel where body weight is transmitted during standing.
The pain is usually worse on hard surfaces. Walking barefoot on tiles, concrete or timber floors commonly aggravates symptoms because there is little external cushioning to compensate for the damaged fat pad. Many patients notice that simply wearing well-cushioned shoes provides immediate relief, whereas walking without shoes becomes increasingly uncomfortable.
Standing for prolonged periods is another common trigger. The heel fat pad is designed to absorb repeated impact and distribute pressure evenly across the calcaneus. When this cushioning system becomes damaged or thinner, the heel bone is exposed to greater mechanical stress during prolonged weight-bearing. As a result, symptoms often increase steadily throughout the day rather than improving with movement.
Unlike plantar fasciosis, severe "first-step pain" in the morning is often absent. Some patients experience mild stiffness when getting out of bed, but many report that the heel actually feels worse after standing or walking for long periods. This gradual increase in discomfort is one of the clinical features that helps distinguish heel fat pad syndrome from plantar fascia degeneration.
Patients frequently describe the pain as deep, bruised or aching rather than sharp. Some compare it to repeatedly walking on a stone hidden inside their shoe. Others explain that it feels as though the natural padding beneath the heel has disappeared. These descriptions often reflect the loss of the heel's normal shock-absorbing capacity.
Direct pressure beneath the heel usually reproduces symptoms. During clinical examination, pressing on the centre of the heel often causes tenderness, while pressure over the medial plantar fascia attachment may be less painful than expected. Squeezing the heel from the sides is usually less uncomfortable than pressing directly upward into the fat pad, helping differentiate the condition from bone-related causes of heel pain.
Heel fat pad syndrome may affect one heel or both. Bilateral symptoms are more common in patients where age-related thinning or repetitive occupational loading has contributed to gradual deterioration of the fat pads. Following trauma, however, only the injured heel is usually affected.
It is also important to recognise that heel fat pad syndrome frequently coexists with other conditions. Patients may simultaneously have plantar fasciosis, calcaneal bone marrow oedema or Baxter's nerve entrapment. This explains why some individuals improve only partially with treatment directed at the plantar fascia. If the damaged fat pad continues to absorb inadequate shock, pain may persist despite successful treatment of the fascia itself.
No single symptom confirms heel fat pad syndrome. Instead, the diagnosis depends on recognising the characteristic pattern of pain together with a careful clinical examination and, where appropriate, diagnostic ultrasound. Ultrasound allows both the plantar fascia and the heel fat pad to be assessed during the same examination, helping identify whether one or both structures are contributing to the patient's symptoms.
Persistent pain beneath the centre of the heel, particularly when it worsens on hard surfaces and improves with cushioned footwear, should prompt consideration of heel fat pad syndrome. Identifying the condition early allows treatment to focus on restoring protection to the heel rather than repeatedly treating the wrong structure.