Overview
It can follow hip or pelvic surgery, a bleed in the belly muscle, or long periods lying in one position.
Many recover over months as the nerve heals.
Symptoms
Common signs:
- Weak thigh, knee buckles
Less common
- Numb front of thigh
- Trouble climbing stairs
Look up a symptom: Muscle weakness in arms or legs · Numb or tingling leg or foot
When to get medical care
Causes
Nerve compression or injury.
Who is more likely to get it
- Recent surgery
- Diabetes
- Blood thinners
Diagnosis
A clinician asks about your symptoms and may order tests.
The exam
A physical exam.
Tests
Tests, if needed:
- Nerve tests (EMG):
- CT or MRI: If a bleed is possible.
Treatment
Treatment depends on the cause and how severe it is.
Self-care
- Use a knee brace or cane
- Do physical therapy
- Make stairs safe
Which doctor treats this
- Urgent care or the ER can treat it first. For minor problems, your primary care provider can help.
- They may send you to a neurologist (brain and nerve doctor).
Living with it
Support groups and helplines
- Genetic and Rare Diseases Information Center (GARD): Free NIH information on rare diseases, including where to find experts and patient groups.
- National Organization for Rare Disorders (NORD): Patient groups, help finding care, and aid programs for rare diseases.
Back to school, work, or sports
- Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.
Children, pregnancy, and older adults
- People on blood thinners: A bleed can press the nerve.
Outlook
Many recover in months.
Getting ready for your visit
Bring a list of your symptoms and medicines.
What to bring
- A list of your medicines and supplements
- Notes on when symptoms started and what makes them better or worse
Questions to ask
- What's causing this?
- What treatment do you recommend?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Femoral nerve injury
Sources
Last updated 2026-11-12.