What Is Fat Pad Atrophy?
The bottom of the foot has built-in cushioning: pads of fat under the heel and under the ball of the foot that absorb pressure with every step. Fat pad atrophy is the thinning of that cushioning. As the padding wears down, more of your body weight lands directly on the bones and nerves underneath, and walking on hard surfaces starts to hurt. It tends to develop gradually, and it often shows up first under the ball of the foot or the heel.
Why Rapid Weight Loss Can Thin the Fat Pad
The fat under the foot is living, metabolically active tissue, and it can shrink when the body loses weight quickly. Rapid weight loss, including the kind many people experience on GLP-1 medications such as Ozempic, Wegovy, Mounjaro, and Zepbound, can reduce the volume of these protective pads faster than the foot adapts. Aging, years of high-impact activity, long-term steroid use, and certain foot shapes can thin the fat pad as well. The result is the same: less cushioning between bone and ground. If you have noticed foot pain during or after significant weight loss, this is a common and treatable reason.
Symptoms of Fat Pad Atrophy
Most people describe a feeling of walking directly on bone. The ball of the foot or the heel can ache in a deep, bruised way, and the pain is usually worse barefoot or on hard floors and eases on soft or cushioned surfaces. Pressing on the ball of the foot often feels tender, and the discomfort tends to build over a day of standing or walking. Some people start to change how they walk to avoid the sore spot, which can lead to new aches elsewhere in the foot.
How We Help: Fat Pad Atrophy Treatment Options
In our boutique Manhattan offices, care starts with an exam to confirm the diagnosis and rule out other causes of ball-of-foot or heel pain, such as a stress fracture, Morton's neuroma, or metatarsalgia. From there, treatment focuses on restoring cushioning and moving pressure away from the thinned area. Options include custom orthotics designed to offload the ball of the foot or heel, cushioned padding and metatarsal supports, and guidance on footwear that adds protection underfoot. When more cushioning is needed, we can inject the foot with fat or a filler to act as padding in place of the lost fat.
What to Expect
Fat pad atrophy is usually managed rather than reversed, since the pad does not tend to rebuild on its own. We can help by injecting fat to replace the lost cushioning, or a fat pad filler, in addition to padding built into custom orthotics. Most people feel meaningful relief once the pressure is offloaded and the right support is in place. The plan is adjusted over follow-up visits as your activity, footwear, and comfort change, so the support keeps matching how you actually live and move.
When to See a Podiatrist
Consider an evaluation if the ball of your foot or heel feels bruised or bare, if hard floors have become painful, or if the discomfort is starting to change how you walk or stand. Getting support in early can protect the tissue that remains and keep a small problem from reshaping your gait. If this pain arrived alongside significant weight loss, it is worth having the foot looked at sooner rather than later.