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Thumb Fractures – Causes, Symptoms And Treatment

Last updated: February 7, 2026 Medically reviewed by: RxHarun Orthopedic Specialist Doctor Reading time: 2 min read

The thumb has two bones – the distal phalange placed between the tip and the knuckle; and the proximal phalange extending between the knuckle and the base. The first metacarpal connects the thumb to the hand. A break or a crack in any of these bones is called a thumb fracture. The chances of developing arthritis in the hand increase once the thumb gets fractured. The most difficult situation occurs when the bone near the base of the thumb breaks. The amount of time taken to treat the fractured thumb depends on the severity of the condition and it may take up to 3 months for it to heal completely.

Causes

  • Falling on an outstretched hand
  • Sports injuries (while catching or throwing a ball)
  • Contact sports such as wrestling and other sports like skiing or hockey may cause sudden muscle contractions, twisting and catching of the thumb
  • The occurrence of a bone disease increases the risk of fracture
  • Lack of calcium in the body may weaken the bones

Symptoms

  • A considerable amount of pain at the point of fracture
  • Swelling in the hand
  • Redness or discoloration
  • The joint may feel tender when touched
  • Limited ability to move the hand and thumb
  • Inability to grasp objects
  • Visibly deformed thumb
  • Numbness in the hand
  • The thumb may turn cold due to a lack of blood supply

Diagnosis

  • Detailed assessment of the mode of injury besides the symptoms reported by the patient
  • The doctor may palpate the injured hand to diagnose the severity of damage and check for loss of sensation
  • An X-ray examination may be required to study the level of bone damage and find the exact location of the fracture
  • The doctor may also check the arm and other parts of the hand to see if they have suffered any additional damage

Treatment

  • Following a healthy diet to compensate for the loss of calcium and minerals in the body improves bone health
  • The use of protective tape to hold the thumb in place allows the joint to recover
  • Use of padded splint to prevent the thumb from moving or getting injured
  • Recommended use of a thumb spica-cast for a couple of weeks in case the middle part of the bone has been damaged
  • Surgical insertion of wires and pins to hold the bone in place and allow healing. This is called internal reduction
  • External fixation- in some cases, the bone may be held in place using pins and screws that are attached to an external device
  • A customized hand therapy program needs to be followed post-surgery or when the cast is removed to restore strength and function

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

Add references, clinical guidelines, textbooks, journal articles, or trusted medical sources here. You can edit this area later with a custom field named _rx_references.

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Written by Dr. Harun Ar Rashid, MD - Arthritis, Bones, Joints Pain, Trauma, and Internal Medicine Specialist

Dr. Md. Harun Ar Rashid, MPH, MD, PhD, is a highly respected medical specialist celebrated for his exceptional clinical expertise and unwavering commitment to patient care. With advanced qualifications including MPH, MD, and PhD, he integrates cutting-edge research with a compassionate approach to medicine, ensuring that every patient receives personalized and effective treatment. His extensive training and hands-on experience enable him to diagnose complex conditions accurately and develop innovative treatment strategies tailored to individual needs. In addition to his clinical practice, Dr. Harun Ar Rashid is dedicated to medical education and research, writing and inventory creative thinking, innovative idea, critical care managementing make in his community to outreach, often participating in initiatives that promote health awareness and advance medical knowledge. His career is a testament to the high standards represented by his credentials, and he continues to contribute significantly to his field, driving improvements in both patient outcomes and healthcare practices. Born and educated in Bangladesh, Dr. Rashid earned his BPT from the University of Dhaka before pursuing postgraduate training internationally. He completed his MD in Internal Medicine at King’s College London, where he developed a special interest in inflammatory arthritis and metabolic bone disease. He then undertook a PhD in Orthopedic Science at the University of Oxford, conducting pioneering research on cytokine signaling pathways in rheumatoid arthritis. Following his doctoral studies, Dr. Rashid returned to clinical work with a fellowship in interventional pain management at the Rx University School of Medicine, refining his skills in image-guided joint injections and minimally invasive pain-relief techniques.