Metatarsalgia

Metatarsalgia
ICD-10	M77.4
ICD-9	726.70
MeSH	D037061

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Evidence Based Medicine
Cochrane Collaboration on Metatarsalgia Bandolier on Metatarsalgia TRIP on Metatarsalgia
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Symptoms of Metatarsalgia Causes & Risk Factors for Metatarsalgia Diagnostic studies for Metatarsalgia Treatment of Metatarsalgia
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List of terms related to Metatarsalgia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[2]

Synonyms and keywords: Capsulitis, Stone bruise, Ball-of-foot-pain

Overview

Metatarsalgia (literally metatarsal pain, colloquially known as stone bruise) is a general term used to refer to any painful foot condition affecting the metatarsal region of the foot (area just before the toes, commonly referred to as ball-of-the-foot). This is a common problem that can affect the joints and bones of the metatarsals. Metatarsalgia is most often localized to the the first metatarsal head (the ball of the foot just behind the big toe). There are two small sesamoid bones under the first metatarsal head. The next most frequent site of metatarsal head pain is under the second metatarsal. This can be due to either too short a first metatarsal bone or to "hypermobility of the first ray" (metatarsal bone + medial cuneiform bone behind it), both of which result in excess pressure being transmitted into the second metatarsal head. Metatarsalgia is the inflammation of joint capsule surrounding these metatarsal heads due to due to excessive pressure over prolonged periods of time. Patient complaints of pain in the joint itself with the feeling of a marble in the shoe or a bunched up sock.

Causes

Metatarsalgia can be caused by any of the following:

• Abnormal foot mechanics (putting excessive amount of weight bearing pressure on the ball of the foot beneath the toe joint)
• Repetitive foot motion exerting pressure on the ball of foot resulting in connective tissue degeneration
• Severe bunion deformity
• Second toe longer than the big toe
• Structurally unstable arch of the foot
• Tight calf muscles
• Improper fitting footwear (women’s dress shoes, other restrictive footwear with narrow toe box)
• High heels
• High impact activities/sports involving running or jumping without proper footwear/orthotics such as:
  • Track and field running
  • Tennis
  • Football
  • Baseball
  • Soccer
• Older age (thinning of foot fat pad leads to more susceptibility to pain in the ball of the foot)

History and symptoms

• The primary symptom of metatarsalgia is the pain at the end of one or more of the metatarsal bones (ball of the foot)
• Pain is increased by walking barefoot or running
• Pain comes on gradually over a period of several months, not suddenly
• Patient has a feeling of:
  • A ''marble'' in the shoe
  • A bunched up sock
  • Standing on a ''pea''
• Swelling at the base of toe
• Difficulty wearing shoes
• Crossover toe (end-stage of capsulitis)

Treatment

• First step in the treatment of metatarsalgia is determining the cause of the pain and then carrying out the measures to eliminate that cause

Conservative medical therapy

• Following are the conservative measures for the treatment of metatarsalgia:
  • Changing the improper fitting footwear with shoes having:
    • High and wide toe box (allowing the foot to spread out)
    • Rocker sole (decreases the stress on the ball-of-the-foot)
  • Unloading the pressure to the ball-of-the-foot by following foot-care products:
    • Orthotics with metatarsal pad which is placed behind the ball-of-the-foot (relieves the pressure, and redistributes the weight from painful area to the more tolerant areas)
    • Gel metatarsal cushions
    • Metatarsal bandages

Surgery

• In some cases, off-loading of the joints doesn't eliminate the pain
• In such cases, patient should be referred to foot and ankle surgeon for the surgery for pain relief

References

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