The pain in your feet seems to appear out of nowhere; you’re just fine one day, and the next you feel like you’re stepping on tiny knives with every step. Freiberg’s Disease in the foot is just one of the painful conditions that can go unnoticed and untreated for weeks, months, or even longer. The rare foot disorder affects the metatarsal bones, most often the second metatarsal head, and the disease typically strikes active teenagers and young adults-though adults of any age can get Freiberg’s.
What Exactly IS Freiberg’s Disease in the Foot?
A disorder of the osteochondroses-a group of conditions involving interruption of blood supply to bone tissue leading to avascular necrosis-Freiberg’s disease attacks the metatarsal head. It most commonly affects the second metatarsal but can involve the third and fourth metatarsals. Alfred Freiberg, who described the disease in 1914, lent his name to it.
The metatarsals are the 5 long bones that make up the bridge between your ankle region and your toe tips. When the normal flow of blood to the metatarsal head is disrupted (due to repeated stress or injury, or for structural reasons), the bone can collapse under pressure, producing the kind of pain patients complain of.
Who is most at risk?
In younger age groups (13 to 18), women are the predominant patients with this condition, and some researchers believe that this is because of hormonal factors, growthspurts, and mechanical differences associated with a longer second metatarsal. Athletes -like gymnasts and runners-and individuals who spend a great deal of time on their feet are prone to developing this condition because the repetitive loading forces create excess pressure.
The Role of Metatarsal Length
Here is one interesting fact that many are not aware of. People whose first metatarsal is significantly shorter than the second have increased risk for Freiberg’s because that increases the stress concentration on the second metatarsal head. Early diagnosis, and treatment such as metatarsal pads in orthotics to offload pressure, can prevent the worsening of the condition.
Symptoms of Freiberg’s Disease in the Foot
The symptoms typically are not sudden but develop gradually. The most common description is that of aching pain located around the metatarsophalangeal joints in the ball of the foot-which are the joints that connect each toe to the forefoot-that can worsen during physical activity and often improves when at rest. Many people complain of inflammation around the joint, tenderness, reduced motion in the toe or even the ankle, and eventually stiffness. It is common to misdiagnose symptoms as Morton’s Neuroma or Metatarsalgia since the signs of those condition overlap somewhat with Freiberg’s Disease.
If you suspect Freiberg’s Disease of the Foot, you should seek professional consultation with your foot and ankle physician, orthopaedic surgeon, or podiatrist.
Diagnosis and Imaging
X-rays can confirm advanced cases of Freiberg’s, revealing a collapse of the metatarsal head but not necessarily early symptoms. A high-sensitivity MRI is frequently the diagnostic method that pinpoints early changes in avascular necrosis-even at a Stage 1 level.
Using Smillie’s classification, staging ranges from early development and flattening of the metatarsal in stage 1, to a significantly collapsed joint, and sometimes loose bone formation or cartilage pieces at stage 5, with each stage guiding the treatment plan.
Treatment
Freiberg’s treatment varies significantly with each individual and stage. Conservative measures are most successful for early diagnoses. The principle of treating the condition with offloading -or using strategies such as restricting physical activities that load the metatarsals, appropriate footwear that provides shock absorption and has a stiff sole to reduce bending of the metatarsal bones, metatarsal pads, and orthotics to redirect stress – allows the bone to heal and even potentially revascularize. In some younger individuals, temporary immobilisation may be required with a walking cast or boot for several weeks. Non-steroidal inflammatory drugs may be used to control inflammation and pain.
Surgical Intervention
If, in spite of properconservative treatment, a patient does not get adequate relief, or in cases of advanced stage disease (Stages 3, 4 or 5), surgical intervention may be recommended. There are multiple surgical options based on the type and extent of the problem. They include dorsiflexion osteotomy (where the bone is cut and rotated so the weakened portion faces upwards away from direct weightbearing forces), joint debridement (removal of dead or injured tissue), replacement of the joint (total or partial), or arthrodesis (fusion of the bones to relieve pain).
Following surgery, return to daily activities is gradual, often over three to six months, but results for many patients in terms of pain relief and restoration of function are significant.
Long-term management
If you undergo a successful procedure, your foot function will usually be good for years. Long term care will include avoiding wearing high heels and wearing comfortable shoes that support the ball of the foot; custom or prefabricated orthotics may provide long-term relief for individuals with or without surgery.
Regular follow ups will continue with your treating podiatrist or orthopaedic foot and ankle specialist tomonitor the condition and make any needed adjustment.