Homan’s Sign

What is Homan’s sign?

Homan’s sign refers to calf pain elicited by passive dorsiflexion of the foot or ankle. Historically, this bedside maneuver was used as a possible sign of deep venous thrombosis (DVT). Lower extremity DVT affects approximately one in 1,000 individuals annually, but Homan’s sign is neither sensitive nor specific and should not be relied on for screening or diagnosis because of its poor diagnostic accuracy.

What conditions can mimic a positive Homan’s sign?

A positive Homan’s sign may occur in DVT, but it is nonspecific and can also occur in several nonthrombotic conditions. Historically, the pain has been attributed to mechanical traction on deep calf structures during forced dorsiflexion. Several conditions present with similar tenderness and are differential diagnoses for Homan’s sign in DVT. Important alternative causes of a positive Homan’s sign include ruptured Baker cyst, cellulitis, gastrocnemius spasm or strain, neurogenic claudication, and intervertebral disc herniation. Clinical risk factors like malignancy, recent surgery, or immobilization increase the likelihood that an underlying DVT explains the positive Homan’s sign.

What are the associated signs and symptoms of a Homan’s sign?

When DVT is present, associated findings of a positive Homan’s sign may include unilateral leg swelling, calf tenderness, warmth, or erythema. These findings increase clinical suspicion for DVT. However, a negative Homan’s sign does not exclude the presence of a thrombus. Because Homan’s sign has poor sensitivity and many DVTs are clinically silent or nonspecific, a negative Homan’s sign does not rule out DVT.

How is Homan’s sign identified?

The Homan’s sign test requires the clinician to maintain knee extension while passively dorsiflexing the patient’s foot. Pain with this maneuver is nonspecific and does not reliably distinguish DVT from musculoskeletal causes. Because Homan’s sign is unreliable, suspected DVT should be evaluated with a validated clinical prediction rule and confirmatory testing, typically D-dimer and/or compression ultrasonography.

How is DVT treated?

Managing a DVT focuses on the underlying thrombosis rather than Homan’s sign itself. Initial treatment typically utilizes low molecular weight heparin or direct oral anticoagulants. Anticoagulation for confirmed DVT may involve a direct oral anticoagulant or, in selected cases, parenteral anticoagulation followed by warfarin. Non-pharmacological support includes compression stockings and early ambulation to facilitate the resolution of edema. If DVT is suspected, confirmatory testing should be obtained.

What are the most important facts to know about Homan’s sign?

• Homan’s sign is a historical bedside maneuver that may raise suspicion for DVT, but neither confirms nor excludes the diagnosis.
• Pain with forced dorsiflexion is nonspecific and may also occur with conditions such as ruptured Baker cyst, cellulitis, gastrocnemius spasm or strain, neurogenic claudication, and disc herniation.
• A negative Homan’s sign does not rule out DVT, and a positive Homan’s sign does not establish it.
• When clinicians test Homan’s sign and suspect DVT, assessment should proceed with appropriate confirmatory testing, usually compression ultrasonography with or without D-dimer.