Femur Fracture: Causes, Treatment, and Recovery Explained by an Orthopedic Surgeon

That is the short version. Now let me walk you through the details the way I would in my office.

I am Dr. Cory Calendine, a board-certified orthopedic surgeon at the Bone and Joint Institute of Tennessee in Franklin. Here is what I want my patients and their families across Middle Tennessee to understand about a broken femur, from the moment of injury through full recovery.

Understanding a Femur Fracture

The femur runs from your hip down to your knee. The long, straight middle section is called the femoral shaft. A break anywhere along this length is called a femoral shaft fracture. I also treat breaks closer to the hip or knee, which are handled a bit differently.

Because the bone is so strong, this injury usually signals a major event. The thigh holds large muscles and major blood vessels, so a break can cause serious bleeding, intense pain, and an obvious deformity of the leg.

Common Types of Femur Fractures

Not every broken femur looks the same. The pattern of the break helps me decide how to fix it. The most common types include:

• Transverse fracture: a straight, horizontal break across the bone
• Oblique fracture: an angled break across the shaft
• Spiral fracture: a break that twists around the bone, often from a twisting injury
• Comminuted fracture: the bone breaks into three or more pieces
• Open fracture: the bone breaks through the skin, which raises the risk of infection

A break can also be stable, where the pieces line up well, or displaced, where the pieces shift out of place.

What Causes a Broken Femur?

The cause usually depends on age. I see two very different groups of patients with this injury.

Younger patients tend to break the thighbone during high-energy events. Car and motorcycle crashes are the leading cause. Falls from a height and sports collisions also play a role.

Older adults often break the bone with much less force. When bone is weakened by osteoporosis, even a simple fall from standing height can be enough. This is why bone health matters so much as we age.

A few less common causes include bone weakened by a tumor, long-term use of certain bone medications, and stress fractures from repeated overuse in athletes or military recruits.

How Is a Femur Fracture Diagnosed?

This injury is often easy to spot. The leg may look shorter, turned outward, swollen, or bent at an odd angle. Most patients cannot put any weight on the leg and are in severe pain.

When you arrive at the hospital, the trauma team checks your whole body first, not just your leg. A broken thighbone can come with other injuries, especially after a crash. We make sure your breathing, circulation, and other vital signs are stable.

X-rays confirm the diagnosis and show the exact break pattern. Sometimes a CT scan is added for a more detailed view or to find a second, harder-to-see fracture near the hip. These images guide the surgical plan.

How Is a Femur Fracture Treated?

Almost every broken femur in an adult needs surgery to heal correctly. It is rare to treat this injury without an operation. The goals are simple: stabilize the bone, control pain, and get you moving as soon as it is safe.

Before surgery, the leg may be placed in a splint or in traction. Traction uses a gentle, steady pull to keep the bone aligned and ease pain while the team prepares for the operation. Most breaks are repaired within 24 to 48 hours, which lowers the risk of lung and other complications.

Intramedullary Nailing for a Femur Fracture

Intramedullary nailing is the gold standard for fixing a femur fracture. During this procedure, the surgeon places a strong metal rod down the hollow center of the thighbone. Screws lock the rod in place above and below the break.

Here is why surgeons favor this approach. The rod gives strong, full-length support along the inside of the bone. The incisions are small and located away from the break itself, so the blood supply and natural healing factors around the injury stay protected. Most patients can begin putting weight on the leg early, which helps keep muscles strong.

Plates, Screws, and External Fixation

A nail is not right for every break. When a fracture extends into the hip or knee joint, a metal plate with screws fixed to the outside of the bone may work better.

External fixation is another option, usually as a temporary step. With this method, pins go into the bone above and below the break and connect to a frame outside the leg. Surgeons often choose this for patients with multiple serious injuries who are not yet stable enough for a longer surgery. Once they recover, the team converts to a permanent repair.

Femur Fracture Recovery: What to Expect

Most broken femurs take three to six months to fully heal. Some take longer, especially if the break was open, broken into many pieces, or if you use tobacco. Smoking slows bone healing, so quitting truly helps.

Physical therapy is a key part of getting better. You will likely start gentle exercises in the hospital, often the day after surgery. A therapist will teach you how to use a walker or crutches and how to safely move around your home.

Here is what I tell my patients to expect during recovery:

• Early movement: most patients begin walking with support soon after surgery, following the weight-bearing limits their surgeon sets
• Rebuilding strength: therapy restores muscle, motion, and balance over weeks to months
• Follow-up visits: regular X-rays confirm the bone is healing on schedule
• Return to activity: driving, work, and sports resume in stages as the bone and muscles recover

At home, a few simple steps lower your risk of a fall and reinjury. Clear away loose rugs and cords, add good lighting, use handrails, and keep daily items within easy reach.

Possible Complications

Surgery for a broken femur is generally very successful, but every patient should understand the risks. I review these openly so you can make informed decisions.

Possible complications include infection, blood clots, and injury to nearby nerves or blood vessels. Fat embolism, where bone marrow enters the bloodstream, is uncommon but serious. In some cases the bone heals in a slightly wrong position, heals slowly, or does not fully heal, which is called nonunion. Hardware can occasionally irritate nearby muscle, and a small number of patients need a follow-up procedure.

Acute compartment syndrome is a rare emergency where pressure builds inside the muscles of the thigh. It needs urgent surgery to relieve the pressure and protect the leg.

When to Seek Care

A femur fracture is a medical emergency. If you suspect a broken thighbone after a crash, fall, or hard hit, call 911 or get to an emergency room right away. Do not try to walk on the leg.

After surgery, call your surgeon or seek care if you notice signs of trouble, such as:

• Increasing pain not controlled by your medicine
• Redness, swelling, warmth, or drainage around the incision
• Calf pain or swelling in one leg
• Shortness of breath or chest pain
• Fever above 101 degrees Fahrenheit
• Sudden trouble bearing weight on the leg

Key Takeaways

• The femur is the strongest bone in the body, so breaking it signals a serious injury
• Car crashes cause most breaks in younger patients, while falls cause most breaks in older adults with weaker bone
• Surgery is almost always required, and intramedullary nailing is the gold standard
• Most patients walk with support within days and fully heal in three to six months
• Physical therapy and follow-up imaging are essential to a complete recovery

Expert Femur Fracture and Bone Care in Franklin, Tennessee

A femur fracture is a serious injury, but it is also a very treatable one. With prompt surgery, skilled care, and committed physical therapy, most patients return to the activities they love. Early treatment and a clear recovery plan make all the difference.

My practice at the Bone and Joint Institute of Tennessee focuses on hip and knee care. That includes arthritis that can develop after a leg injury and joint replacement when it is needed. If you are dealing with a broken thighbone, lingering pain after a healed fracture, or hip or knee problems of any kind, my team and I are here to help. We proudly serve patients from Franklin, Brentwood, Nashville, Williamson County, and all of Middle Tennessee.

Request an appointment with Dr. Cory Calendine or visit the patient education library at corycalendinemd.com to learn more about your bone and joint health.

This information is for educational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider before making medical decisions. Individual results may vary based on personal health circumstances.