Boutonniere Deformity; Causes, Symptoms, Treatment

Last updated: February 7, 2026Reviewed date: February 7, 2026Reading time: 2 min read
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Boutonniere Deformity (BD) is a condition characterized by a deformity in the finger with the middle joint bent downwards and the distal end pointed backwards. The finger joints are connected by tendons and ligaments which allow motion. Due to tearing of the ligaments in this condition, finger bends downwards (flexed) at the proximal interphalangeal joint (PIP) and hyperextended (bent backwards) at the distal interphalangeal joint...

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Definition

Boutonniere Deformity (BD) is a condition characterized by a deformity in the finger with the middle joint bent downwards and the distal end pointed backwards. The finger joints are connected by and which allow motion. Due to tearing of the ligaments in this condition, finger bends downwards (flexed) at the proximal interphalangeal joint (PIP) and hyperextended (bent backwards) at the distal interphalangeal joint (DIP).

Causes

  • – In this case, the inflammatory cells are released into the (joint lining) which result in the formation of the abnormal pannus tissue. This in turn secretes substances which can damage tendons, bones and ligaments causing deformities.
  • or injury– The that is attached to the middle joint of the finger gets damaged if a bent finger is jammed or hit by an external force. This prevents the straightening of the joint
  • or cut– A cut at the top of the finger can tear the underlying tendon causing deformity
  • Dislocations and fractures: Dislocations and fractures in the bones of the hand may also lead to this condition.

Symptoms

  • and
  • Visibly deformed finger
  • Limited ability to stretch the finger

  • Imaging Tests: helps to diagnose broken bones and soft tissue structures.
  • Elson’s Test: The patient is asked to straighten the injured finger to check for loss of motion.

Treatment

  • Ice packs and heat therapy: Ice packs can be applied for 24-48 hours at regular intervals. They help to relieve pain and swelling. Heat therapy can also be beneficial in relieving the symptoms.
  • Medications– Corticosteroids and medicines may be prescribed if the patient is suffering from .
  • Splinting– The middle part of the finger is secured using a splint for 4-6 weeks to allow the ends of the tendon to regrow and join each other. The patient may be asked to continue wearing the splint at night after 6 weeks
  • Exercises– The doctor may recommend specific stretching and strengthening exercises to improve functionality. It may help to restore the normal range of motion.
  • Taping: Taping is recommended if the patient is likely to participate in sports even after the treatment as a precautionary measure. It can help to provide stability to the fingers.
  • Surgical treatment– This is required if the patient is suffering from Rheumatoid Arthritis, the tendon is completely torn or a piece of bone gets detached along with the tendon. The tendon and the bone are put back into their correct anatomical position.
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Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
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  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
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Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Rest, drink safe water, and observe symptoms carefully.
  • Keep a written note of symptoms, duration, temperature, medicines already taken, and allergy history.
  • Seek medical care quickly if symptoms are severe, worsening, or unusual for the patient.

OTC medicine safety

  • For mild pain or fever, ask a registered pharmacist or doctor before using common over-the-counter pain/fever medicines.
  • Do not combine multiple pain medicines without advice, especially if you have kidney disease, liver disease, stomach ulcer, asthma, pregnancy, or take blood thinners.
  • Do not give adult medicines to children unless a qualified clinician advises it.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Severe symptoms, confusion, fainting, breathing difficulty, chest pain, severe dehydration, or sudden weakness need urgent medical care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

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Care roadmap for: Boutonniere Deformity; Causes, Symptoms, Treatment

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

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