Elbow Valgus and Varus: What You Need to Know - Orthopedics

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What is cubitus valgus or cubitus varus?


Hello, Doctor Shi: Could you please explain what is meant by cubitus valgus or cubitus varus? When I walk and swing my arms forward with my elbows straight, the bend in my elbows points upwards, rather than inward towards my body like in most people.
I would like to know if this aligns with the conditions mentioned above.
I noticed in the military service classification table that an elbow angle exceeding 35 degrees of cubitus valgus may qualify for alternative service.
I would greatly appreciate it if you could take the time to respond.
Thank you, Doctor.

Su, 20~29 year old female. Ask Date: 2001/04/17

Dr. Shi Guozheng reply Orthopedics


Generally, when the elbow is fully extended and facing forward, the angle between the humerus and the ulna is approximately 10 degrees outward, which is referred to as the carrying angle.
This slight outward bend helps prevent the arms from colliding with the body while walking when carrying objects.
If an abnormal outward or inward angulation of the elbow occurs due to injury, fracture, or damage to the growth plate, it is considered an abnormal condition, although it may not necessarily affect the function of the elbow.
For regulations regarding military service physical examinations, please refer to the relevant guidelines.
The assessment of the angle can be conducted at a hospital, where a physician can evaluate it using X-rays.
Whether treatment is necessary is a matter of personal opinion.

Reply Date: 2001/04/17

More Info


Elbow valgus and varus are terms used to describe the alignment of the elbow joint in relation to the forearm and upper arm. Understanding these conditions is essential, especially in contexts like military service or sports, where proper joint alignment can impact performance and injury risk.

Elbow Valgus refers to a condition where the forearm is angled away from the body when the arm is extended. This means that when you extend your arm forward, the elbow joint appears to bend outward, creating an angle greater than the typical anatomical alignment. In a healthy elbow, the forearm should align closely with the upper arm, creating a straight line. However, in valgus deformity, the angle between the upper arm and forearm exceeds the normal range, often leading to a noticeable outward bend.

Elbow Varus, on the other hand, is the opposite condition. In this case, the forearm angles inward towards the body when the arm is extended. This creates an angle that is less than the normal alignment, causing the forearm to appear closer to the body than the upper arm. Varus deformity can lead to increased stress on the inner structures of the elbow and may predispose individuals to injuries.

In your situation, where you mention that when you walk and extend your arms forward, your elbows bend outward (with the bending part facing upwards), it suggests that you may have a degree of elbow valgus. If this angle exceeds 35 degrees, it could indeed be a concern in contexts like military service, where specific physical standards are enforced.

Clinical Implications:
1. Functional Impact: Elbow valgus can affect the biomechanics of the arm, potentially leading to overuse injuries, particularly in athletes who engage in throwing sports. The increased angle can place additional stress on the ulnar collateral ligament, which is crucial for stabilizing the elbow during such activities.

2. Assessment and Diagnosis: If you suspect that your elbow alignment is outside the normal range, it would be beneficial to consult with a healthcare professional, such as an orthopedic specialist. They can perform a physical examination and possibly imaging studies (like X-rays) to assess the degree of valgus or varus deformity.

3. Management Options: Depending on the severity of the condition and any associated symptoms (like pain or instability), treatment options may vary. Mild cases may require physical therapy to strengthen the muscles around the elbow and improve joint stability. In more severe cases, especially if there are functional limitations or pain, surgical intervention might be considered to correct the alignment.

4. Military Considerations: As you mentioned the military's standards regarding elbow alignment, it’s important to understand that these criteria are in place to ensure that all service members can perform their duties without increased risk of injury. If your elbow valgus is significant, it may affect your eligibility for certain roles or require you to pursue alternative service options.

In conclusion, understanding elbow valgus and varus is crucial for recognizing how these conditions can impact your daily activities and physical performance. If you have concerns about your elbow alignment, particularly in relation to military service, seeking a professional evaluation is a prudent step. This will help you understand your condition better and explore any necessary interventions to ensure your health and fitness for duty.

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