Understanding Humerus Fractures: Types, Symptoms, and Recovery
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer: What Is a Humerus Fracture?
A humerus fracture is a break in the upper arm bone that connects the shoulder to the elbow. [1] Fractures are classed by location as proximal (near the shoulder), shaft (middle) or distal (near the elbow). [1] Although they account for less than 10% of all bone breaks, they are serious injuries that often need realignment and extended immobilization to heal correctly. [1]
What the research says
For displaced shoulder-end (proximal) fractures, surgery has not been shown to beat non-surgical care. A Cochrane review of 47 trials (3,179 participants, mostly women aged 60 or over) found, in 10 trials comparing surgery with non-surgical treatment (717 participants), high-certainty evidence of no clinically important difference in patient-reported shoulder function at one year (standardised mean difference 0.10; 95% CI -0.07 to 0.27) or at two years. Surgery carried low-certainty evidence of a higher risk of further surgery (risk ratio 2.06; 95% CI 1.21 to 3.51). (Handoll et al., Cochrane Database Syst Rev, 2022 [2])
For mid-shaft fractures, braces heal more slowly and fail more often than most operations. A network meta-analysis of 21 randomized trials in 1,203 patients found that functional bracing had significantly higher odds of nonunion and a significantly longer time to union than plate fixation (ORIF), minimally invasive plating, or antegrade nailing, and higher odds of secondary surgery. Open plating, however, was linked to higher odds of radial nerve palsy and superficial infection than bracing or minimally invasive plating. (Zavras et al., J Bone Joint Surg Am, 2023 [3])
Healing time for shaft fractures is measured in months, not weeks. In a randomized trial of 60 adults with a humeral shaft fracture, mean union time was 13.9 weeks with plate fixation versus 18.7 weeks with a functional (Sarmiento) brace; the higher nonunion risk with bracing was not statistically significant in this small trial (P = 0.492). (Hosseini Khameneh et al., Orthop Res Rev, 2019 [4])
Key Takeaways
Feature | Details |
Bone Involved | Humerus (the only bone in the upper arm). |
Common Causes | High-impact trauma (falls, car accidents, sports). [1] |
Most Common Site | Proximal end (near the shoulder joint). |
Core Symptoms | Severe pain, swelling, deformity, and inability to move the arm. [1] |
Treatment Types | Immobilization (sling/cast), closed reduction, or surgery. [1] |
Recovery Time | Several months, including physical therapy. [1] |
What is a humerus fracture?
The humerus is one of the strongest bones in the human body, acting as the structural anchor for the upper arm. It plays a critical role in both shoulder and elbow movement. Because of its strength, breaking the humerus usually requires a high-force impact. [1] For more on how the bone is built, see our guide to humerus anatomy and bone health.
Fractures are relatively rare, representing less than 10% of all skeletal breaks. [1] They occur most frequently at the proximal end, where the bone meets the shoulder. These injuries can affect anyone, though individuals with weakened bones due to conditions like osteoporosis are at a significantly higher risk for sudden breaks from even minor falls.
What are the types and classifications of humerus fractures?
Healthcare providers classify humerus fractures based on the pattern of the break and the location on the bone. [1]
Classification by Pattern
Transverse: A straight horizontal break across the bone.
Oblique: A diagonal break.
Spiral: A break that wraps around the bone, often caused by a twisting force.
Comminuted: The bone is shattered into three or more pieces.
Open vs. Closed: An "open" fracture (also called a compound fracture) involves the bone breaking through the skin, which carries a high risk of infection. [1] A "closed" fracture remains beneath the skin.
Classification by Location
Location | Term | Description |
Top | Proximal | Near the shoulder joint; the most common site for humerus breaks. |
Middle | Shaft | The long, straight part of the bone. |
Bottom | Distal | Near the elbow joint; common in children (supracondylar fractures). [1] |
What are the symptoms and warning signs of a humerus fracture?
A humerus fracture usually causes intense pain right after trauma, along with swelling, bruising, deformity or trouble moving the arm. [1] Other symptoms include:
Potential Tissue Damage
Because major nerves and blood vessels run alongside the humerus, a fracture can sometimes cause secondary damage to:
Nerves: The radial, ulnar, or median nerves (causing numbness or weakness). [1] In shaft fractures the radial nerve is the one most often affected.
Blood Vessels: The brachial artery (affecting blood flow to the hand). [1]
Muscles: The biceps and triceps. [1]
What causes humerus fractures, and who is at risk?
Humerus fractures are mainly caused by trauma such as falls, motor vehicle accidents and sports injuries, and osteoporosis raises the risk in people over 50. [1] Common scenarios include:
Falls: Particularly falling onto an outstretched hand or directly onto the shoulder.
Motor Vehicle Accidents: High-speed collisions provide enough force to break the humeral shaft.
Sports Injuries: Contact sports or high-impact activities.
Osteoporosis Warning: For individuals over 50, especially women, osteoporosis can thin the bones to the point where a simple fall from standing height can cause a humerus fracture.
How is a humerus fracture diagnosed?
A humerus fracture is diagnosed with a physical exam of circulation and nerve function, followed by imaging such as X-rays, CT scans or MRI. [1] This is followed by imaging to confirm the break:
How is a humerus fracture managed and treated?
The goal of treatment is to return the bone to its correct alignment and keep it there while it heals.
Non-Surgical Treatment
Surgical Treatment
If the bone is severely displaced or shattered, surgery is required.
Internal Fixation: Surgeons use metal plates, screws, or rods (intramedullary nails) to hold the bone fragments together. [1]
Shoulder Replacement: In extreme cases of proximal fractures in older adults, a partial or total shoulder replacement may be necessary. [1] [2] Read about reverse shoulder replacement.
What is recovery like after a humerus fracture?
Healing a humerus fracture is a long-term process.
Timeline: Initial bone healing often takes about 6 to 12 weeks, though shaft fractures can take longer, and full strength may not return for several months.
Physical Therapy: This is a critical component of recovery. [1] Once the bone has stabilized, exercises are introduced to prevent "frozen shoulder" and to rebuild the muscles that support the arm.
Conclusion
A humerus fracture is a major injury that demands immediate medical attention and a disciplined approach to recovery. Whether treated with a simple sling or advanced surgery, the focus remains on proper alignment and long-term rehabilitation. By following a structured recovery plan, most individuals can regain full function of their arm.
Frequently Asked Questions
How long does a humerus fracture take to heal?
Initial bone knitting usually takes 6 to 12 weeks (shaft fractures can take longer), but full recovery of strength and range of motion can take 6 months to a year.
Do I always need surgery for a broken humerus?
No. Many proximal and shaft fractures can be treated with a sling or brace if the bone pieces are not significantly out of place. [1] [2] [3]
What is a "hanging cast"?
A special type of cast used for shaft fractures that uses the weight of the cast to provide gentle traction and keep the bone aligned.
Can I drive with a humerus fracture?
No. You should not drive while your arm is immobilized in a sling or cast, as you cannot safely control the vehicle.
Is a humerus fracture the same as a broken shoulder?
A proximal humerus fracture is often referred to as a broken shoulder because it involves the "ball" part of the shoulder joint. [2]
What is "frozen shoulder"?
A complication where the shoulder joint becomes stiff and painful due to lack of movement during fracture healing. Physical therapy helps prevent this. Learn more in our frozen shoulder guide.
Can I sleep lying down with this fracture?
Many patients find it more comfortable to sleep in a semi-reclined position (like in a recliner chair) for the first few weeks to reduce pain and swelling.
What is a supracondylar fracture?
A specific type of humerus fracture just above the elbow, which is very common in children who fall on an outstretched arm. [1]
Will I have a permanent scar from surgery?
Yes, internal fixation requires an incision, but surgeons aim to minimize scarring.
Can I get a humerus fracture from a cough?
It is extremely rare, but in individuals with severe osteoporosis or bone cancer, a "pathologic fracture" can occur from very minor stress.
What is the radial nerve?
A major nerve that wraps around the humerus shaft. If damaged during a fracture, it can cause "wrist drop" or numbness in the hand.
Does smoking affect bone healing?
Yes. Smoking significantly slows down bone healing and increases the risk of the bone failing to knit back together (non-union).
When can I start physical therapy?
Your doctor will decide, but gentle pendulum exercises often start within 1 to 2 weeks for non-surgical cases.
What is a "non-union"?
A complication where the broken bone fails to grow back together. [1] This may require additional surgery or bone grafting. [1] [3]
Are humerus fractures painful?
Yes, they are typically very painful initially. Pain management usually involves a combination of medication, icing, and immobilization.
Can I use my hand while my upper arm is broken?
Usually, yes. Doctors often encourage gentle finger and wrist movements to maintain circulation and prevent stiffness.
What is an intramedullary nail?
A metal rod inserted into the hollow center (marrow) of the humerus to stabilize a shaft fracture. [1]
Do the plates and screws need to be removed later?
Usually not, unless they cause irritation or pain after the bone has fully healed.
Can I fly on a plane with a humerus fracture?
Yes, but you should notify the airline if you have a large cast or brace, and be aware that swelling can increase during flight.
How do I know if my nerve is damaged?
Signs include tingling, numbness, or an inability to move your wrist or fingers. Tell your doctor immediately if you notice these.
What is a displaced fracture?
A break where the two ends of the bone have moved out of their normal alignment. [1]
Can a humerus fracture cause a blood clot?
Reduced mobility after a major injury or surgery can raise the risk of deep vein thrombosis (DVT), although this is less common with arm injuries than with leg injuries. Seek care right away for calf pain, leg swelling, or sudden shortness of breath.
What should I eat to help my bone heal?
A diet rich in calcium, Vitamin D, and protein is essential for bone regeneration.
Is the humerus the "funny bone"?
No. The "funny bone" is actually the ulnar nerve where it passes behind the distal end of the humerus at the elbow.
Can I go to work with a broken humerus?
It depends on your job. Desk work may be possible after a few weeks, but manual labor will require several months of recovery.
What is an avulsion fracture?
A break where a small piece of bone attached to a tendon or ligament gets pulled away from the main bone. Read more about avulsion fractures.
How common are these fractures in athletes?
They are seen in high-impact sports like football or wrestling, and in sports with high fall risks like cycling or skiing.
What is a "surgical neck" fracture?
A fracture at the narrow part of the humerus just below the ball of the shoulder joint.
Can children's humerus fractures heal faster?
Yes, children's bones have a higher capacity for remodeling and generally heal more quickly than adults'. See our guide to fractures in children.
What is a comminuted fracture?
A fracture where the bone has broken into multiple small pieces. Read the full comminuted fracture guide.
Does ice help a broken arm?
Yes, icing for 15-20 minutes several times a day can help reduce swelling and numb the pain.
What is a "pathologic fracture"?
A break that happens because the bone was already weakened by another disease, like a tumor or infection. See our guide to pathologic fractures and bone metastasis.
Can a humerus fracture cause permanent weakness?
With proper physical therapy, most people regain full strength, but severe joint-involved fractures may leave some residual weakness.
What is the "greater tuberosity"?
A specific bump on the top of the humerus where several important rotator cuff muscles attach.
How is an open fracture treated differently?
It requires emergency surgery to clean the wound (debridement) and high-dose antibiotics to prevent bone infection.
Can I take a shower with a sling?
You will likely need a waterproof cover for a cast or help removing/re-applying a sling once your doctor says it's safe to do so.
What is "malunion"?
When a bone heals in an incorrect position, which may cause a visible deformity or limited movement. [1]
Can physical therapy be done at home?
Yes, your therapist will provide a "Home Exercise Program" (HEP) that you must follow daily for the best results.
What is the difference between a splint and a cast?
A splint is a "half-cast" held on by bandages to allow for swelling; a cast is a full circle of fiberglass or plaster.
Can I get a humerus fracture from lifting weights?
It is very rare in healthy bone, but can happen if the weight is excessive or if there is an underlying stress fracture.
What is the "shaft" of the bone?
The long, straight middle section of the humerus bone.
How do doctors check for nerve damage?
They will ask you to perform specific movements like "giving a thumbs up" or spreading your fingers.
Can a humerus fracture cause a shoulder dislocation?
Yes, the force that breaks the proximal humerus can sometimes pop the bone out of the shoulder socket as well. Learn about a dislocated shoulder.
What is a "stress fracture" of the humerus?
A tiny crack caused by repetitive overhead motion, common in baseball pitchers or javelin throwers.
Does age affect recovery?
Yes, older adults may heal more slowly and are at higher risk for joint stiffness.
What is "crepitus"?
The crunching or grinding sound/feeling of broken bone ends rubbing together.
Can I use a bone stimulator?
In cases of slow healing, a doctor might prescribe a device that uses ultrasound or electricity to encourage bone growth.
What is a "distal" fracture?
A break at the bottom end of the humerus, near the elbow joint. [1]
How long should I use the sling?
Usually between 2 to 6 weeks, depending on the stability of the fracture and your doctor's instructions.
Where can I find more resources on recovery?
Consult your orthopedic surgeon or physical therapist for specific guides tailored to your type of fracture. You can also read our overview of how broken bones heal.
Related Reading
Understanding the Humerus: Anatomy, Function, and Bone Health
Bone Fractures: What Happens When a Bone Breaks, and How It Heals
Osteoporosis: Causes, Symptoms, Diagnosis and Treatment Explained
Dislocated Shoulder: Symptoms, First Aid, Treatment & Recovery — Complete Guide
Frozen Shoulder (Adhesive Capsulitis): Symptoms, Causes & Treatment — Complete Guide
References
Cleveland Clinic. Humerus Fracture: Types, Symptoms & Treatment. Cleveland Clinic. Last updated May 6, 2022. https://my.clevelandclinic.org/health/diseases/22990-humerus-fracture
Handoll HH, Elliott J, Thillemann TM, et al. Interventions for treating proximal humeral fractures in adults. Cochrane Database Syst Rev. 2022;6(6):CD000434. PMID: 35727196. https://doi.org/10.1002/14651858.CD000434.pub5
Zavras AG, Monahan KT, Winek NC, et al. Conservative management with functional brace versus various surgical fixation techniques for humeral shaft fractures: a network meta-analysis. J Bone Joint Surg Am. 2023;105(14):1112-1122. PMID: 37224234. https://doi.org/10.2106/JBJS.22.01374
Hosseini Khameneh SM, Abbasian M, Abrishamkarzadeh H, et al. Humeral shaft fracture: a randomized controlled trial of nonoperative versus operative management (plate fixation). Orthop Res Rev. 2019;11:141-147. PMID: 31576178. https://doi.org/10.2147/ORR.S212998
Medical disclaimer
This guide is for general information only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions about a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read here.
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