Elbow Orthopaedic Test: Milking Manoeuvre Test

The Milking Manoeuvre Test is an elbow special test used to apply valgus stress to the medial elbow and reproduce symptoms associated with the ulnar collateral ligament, particularly in overhead-throwing athletes. The test is usually performed with the elbow flexed beyond 90 degrees and the forearm supinated while the professional pulls on the client’s thumb to create a valgus load.

A positive finding may include familiar medial elbow pain, apprehension, instability sensation or symptom reproduction during the valgus stress. However, the test does not confirm UCL injury on its own. It should be interpreted alongside throwing history, mechanism, medial elbow tenderness, valgus stress testing, moving valgus stress testing, grip strength, neurological screening, imaging where relevant and professional judgement.

Introduction

The Milking Manoeuvre Test is a classic elbow special test used when medial elbow pain or ulnar collateral ligament involvement is part of the assessment reasoning. The UCL, especially the anterior bundle, is a major restraint to valgus stress at the elbow. It is particularly important in overhead throwing, where high valgus loads occur during the late cocking and acceleration phases.

The test is often used for baseball pitchers, javelin throwers, cricket bowlers, tennis players and other athletes or clients exposed to repeated valgus elbow loading. It can also be used after a valgus trauma mechanism, although its strongest practical relevance is usually in throwing or overhead-load contexts.

The Milking Manoeuvre creates valgus stress by positioning the elbow in flexion and pulling the thumb. If this reproduces familiar medial elbow pain or instability symptoms, the finding may support UCL-related assessment reasoning.

However, the test should not be used as a stand-alone diagnostic test. Medial elbow pain may also involve the flexor-pronator mass, ulnar nerve, medial epicondyle, joint irritation, growth-related conditions in younger athletes, or referred symptoms. In throwing athletes, a small amount of valgus laxity may be present without symptoms, so pain, history and functional context matter.

Quick Summary

Test name: Milking Manoeuvre Test
Region: Elbow
Primary purpose: Provoke medial elbow symptoms with valgus stress
Commonly associated presentation: Ulnar collateral ligament involvement, valgus overload, medial elbow symptoms in overhead throwers
Positive finding: Familiar medial elbow pain, apprehension, instability sensation or symptom reproduction
Negative finding: No familiar medial elbow symptoms and no meaningful side-to-side difference
Main limitation: Diagnostic accuracy evidence for the Milking Manoeuvre as a stand-alone test is limited and should be interpreted cautiously.

What Is the Milking Manoeuvre Test?

The Milking Manoeuvre Test is a valgus stress test for the medial elbow.

The client’s elbow is flexed beyond 90 degrees, the forearm is supinated, and the professional applies a valgus load by pulling downward on the client’s thumb. This places stress across the medial elbow and may reproduce symptoms associated with the ulnar collateral ligament.

The test may be performed in sitting, standing or supine depending on the professional’s preference and the client’s comfort.

The test may be used to observe:

• Medial elbow pain
• UCL-region symptom reproduction
• Apprehension
• Instability sensation
• Side-to-side difference
• Symptom location
• Relationship to throwing history

Why It Is Used

The Milking Manoeuvre Test may be used to support assessment reasoning around:

• Medial elbow pain
• Ulnar collateral ligament involvement
• Valgus overload in throwing athletes
• Pain during late cocking or acceleration phases of throwing
• Elbow instability sensation
• Medial elbow symptoms after valgus stress
• Flexor-pronator versus UCL differential reasoning
• Side-to-side comparison
• Baseline and retest documentation in Measurz

The test is especially useful when symptoms are related to overhead throwing or valgus-load tasks.

What It Assesses

The Milking Manoeuvre Test assesses symptom response to valgus stress across the medial elbow in a flexed position.

It may provide information about:

• Medial elbow symptom reproduction
• UCL-related assessment reasoning
• Apprehension under valgus load
• Instability sensation
• Side-to-side symptom difference
• Throwing-related elbow irritability
• Whether valgus stress reproduces familiar symptoms

It does not directly assess:

• UCL fibre integrity with certainty
• Tear grade with certainty
• MRI findings
• Exact laxity amount
• Flexor-pronator pathology
• Ulnar nerve involvement
• Throwing readiness
• Work readiness
• Treatment need

Who It Is Useful For

The Milking Manoeuvre Test may be useful for clients with:

• Medial elbow pain
• Throwing-related elbow symptoms
• Symptoms during overhead sport
• Pain with valgus elbow loading
• Apprehension or instability sensation at the elbow
• Symptoms after a valgus stress mechanism
• Suspected UCL-related presentation
• Need for baseline and retest documentation in Measurz

It may also be useful for professionals learning how elbow position and valgus loading influence medial elbow symptoms.

When to Use This Test

Consider using the Milking Manoeuvre Test when:

• The client reports medial elbow pain during throwing
• UCL involvement is part of the assessment reasoning
• Valgus loading reproduces symptoms
• The client has pain in the late cocking phase of throwing
• Moving Valgus Stress Test or valgus stress testing is being considered
• You need a side-to-side comparison
• You are building a broader elbow assessment profile

It should be combined with history, palpation, valgus stress testing, Moving Valgus Stress Test, resisted wrist flexion/pronation, ulnar nerve assessment and sport-specific load history.

When Not to Use or When to Be Cautious

Use caution or avoid the test when:

• Recent fracture, dislocation or major trauma is suspected
• The elbow is highly irritable
• Severe pain is present before testing
• The client cannot tolerate elbow flexion
• Neurological symptoms are severe or worsening
• Growth-plate or adolescent throwing-related concerns require further assessment
• The professional cannot apply controlled valgus stress safely
• The test would not change assessment reasoning

Stop the test if pain increases sharply, the client reports strong instability, neurological symptoms appear or worsen, or the client asks to stop.

Equipment Required

The Milking Manoeuvre Test usually requires no equipment.

Optional equipment includes:

• Measurz app
• Pain rating scale
• Throwing-history notes
• Elbow range of motion record
• Grip strength or pinch strength tool
• Notes field for valgus stress response
• Video recording for education where appropriate
• Imaging or referral notes if relevant

Step-by-Step Protocol / Practice

Setup

Ask the client to sit or stand comfortably.

Explain the test:

“I am going to place your elbow in a flexed position and apply a gentle valgus stress through your thumb. Tell me if this reproduces your familiar medial elbow symptoms or any feeling of instability.”

Test the less symptomatic side first where appropriate.

Client position

The client may sit or stand with:

• Shoulder elevated, abducted or positioned in a throwing-like posture depending on the variation
• Elbow flexed beyond 90 degrees
• Forearm supinated
• Wrist and hand relaxed
• Thumb accessible to the professional

The client should not actively resist unless instructed.

Examiner/professional position

The professional stands beside or in front of the client.

They should be able to support the elbow and apply controlled traction through the thumb without twisting the wrist aggressively.

Hand placement

One hand may support the elbow or upper limb.

The other hand grasps the client’s thumb.

Avoid painful gripping of the thumb or wrist.

Stabilisation

Stabilise the upper arm enough to control the movement and direct force to the elbow.

Avoid excessive shoulder movement, wrist twisting or uncontrolled pulling.

Movement or force direction

Apply a downward traction force through the thumb to create valgus stress at the elbow.

The force should be:

• Gentle
• Gradual
• Controlled
• Symptom-limited
• Compared with the other side where appropriate

Instructions

Tell the client:

“Stay relaxed. Tell me if you feel your familiar medial elbow pain, apprehension, instability or symptoms down into the forearm or hand.”

Positive finding

A positive finding may include:

• Familiar medial elbow pain
• UCL-region pain
• Apprehension
• Instability sensation
• Symptoms reproduced in a throwing-relevant position
• Clear side-to-side difference
• Pain that matches the client’s throwing complaint

Record whether the positive finding was pain, apprehension, instability sensation or a combination.

Negative finding

A negative finding may include:

• No familiar medial elbow pain
• No apprehension
• No instability sensation
• No meaningful side-to-side difference
• Only mild non-familiar stretch or pressure

A negative finding does not fully exclude UCL involvement.

Stopping criteria

Stop the test if:

• Pain increases sharply
• Instability sensation becomes strong
• Ulnar nerve symptoms occur or worsen
• The client asks to stop
• The test position cannot be tolerated
• The professional cannot control the force safely

Safety notes

The test should be symptom-limited. Avoid aggressive valgus loading, especially after acute trauma or in highly irritable throwing elbows.

Positive and Negative Test Interpretation

A positive Milking Manoeuvre Test may increase suspicion that the UCL or medial elbow structures are relevant to the client’s symptoms, especially when it reproduces familiar throwing-related medial elbow pain. Apprehension or instability sensation may also be meaningful when it matches the history.

However, a positive test does not confirm a UCL tear. Medial elbow symptoms can also arise from the flexor-pronator mass, ulnar nerve irritation, medial epicondyle irritation, joint irritation or other elbow conditions.

A negative Milking Manoeuvre Test may reduce suspicion that this specific valgus stress position reproduces symptoms in that session. However, it does not exclude UCL involvement, particularly when symptoms occur only during high-speed throwing, fatigue, or sport-specific loads.

The result is more meaningful when interpreted with:

• Throwing history
• Symptom timing during throwing
• Medial elbow palpation
• Valgus Stress Test
• Moving Valgus Stress Test
• Flexor-pronator strength testing
• Ulnar nerve assessment
• Grip and pinch strength
• Shoulder and trunk contribution
• Imaging where relevant

Sensitivity, Specificity and Diagnostic Accuracy

Diagnostic accuracy evidence for the Milking Manoeuvre as a stand-alone test is limited compared with broader elbow UCL assessment.

Recent clinical discussion and research around medial ulnar collateral ligament assessment suggests that the Milking Manoeuvre may be useful for identifying whether the UCL is symptomatic, while valgus stress testing may provide more information about laxity. The Moving Valgus Stress Test has often been discussed as a highly sensitive test in UCL assessment, while the Milking Manoeuvre is commonly used as a complementary provocation test.

Condition or presentation: Medial ulnar collateral ligament injury / symptomatic UCL involvement
Population: Primarily overhead-throwing athletes and medial elbow pain populations
Test variation: Standard or modified Milking Manoeuvre
Reference standard: Varies across research and clinical reports, including imaging, surgical findings and clinical diagnosis
Sensitivity: Not consistently established for the standard Milking Manoeuvre across high-quality studies
Specificity: Not consistently established across high-quality studies
Likelihood ratios: Not consistently available for stand-alone interpretation
Key limitations: Different test variations, different elbow positions, small or specialised athlete populations and overlap with other medial elbow conditions.

Plain-language interpretation:

• A positive test may support suspicion when it reproduces familiar medial elbow symptoms.
• A negative test does not exclude UCL involvement.
• The test is more useful in a cluster than alone.
• Throwing athletes may show some laxity without symptoms, so symptom reproduction matters.

Reliability and Validity

Reliability evidence for the Milking Manoeuvre is limited and depends on consistent technique.

Reliability may be affected by:

• Shoulder position
• Elbow flexion angle
• Forearm supination position
• Amount of thumb traction
• Direction of valgus force
• Client guarding
• Symptom irritability
• Whether pain, apprehension or laxity is used as the positive criterion
• Professional experience with throwing-athlete elbows

Validity is strongest when the test is used as a symptom provocation test in a relevant medial elbow history. Validity is weaker if it is used alone to infer UCL structural integrity or tear grade.

Reliability improves when the professional records:

• Elbow angle
• Shoulder position
• Forearm position
• Force direction
• Symptom location
• Pain score
• Apprehension
• Side-to-side comparison
• Related valgus tests

Common Errors and Limitations

Common errors include:

• Pulling too aggressively on the thumb
• Not supporting the arm
• Not recording elbow flexion angle
• Not confirming symptoms are familiar
• Counting vague discomfort as a clear positive
• Ignoring ulnar nerve symptoms
• Not comparing sides
• Assuming pain confirms UCL tear
• Assuming a negative test excludes UCL involvement
• Not assessing the flexor-pronator mass

Limitations include:

• Stand-alone diagnostic accuracy is not well established
• It may be uncomfortable at the thumb or wrist
• Medial elbow pain is not specific to UCL injury
• Throwing symptoms may not reproduce in static testing
• Laxity may occur in asymptomatic throwers
• Test technique varies between professionals
• A single test should not guide throwing or sport decisions

Practical Applications

The Milking Manoeuvre Test may be useful for:

• Medial elbow symptom provocation
• UCL-related assessment reasoning
• Throwing-athlete elbow assessment
• Comparing sides
• Recording pain versus apprehension
• Baseline and retest documentation
• Deciding whether further assessment may be appropriate
• Supporting Measurz elbow assessment reports

In Measurz, it can be recorded alongside Valgus Stress Test, Moving Valgus Stress Test, flexor-pronator strength, grip strength, ulnar nerve testing, shoulder range of motion, scapular assessment and throwing workload history.

How to Record This in Measurz

Record:

• Test name: Milking Manoeuvre Test
• Side tested
• Shoulder position
• Elbow flexion angle
• Forearm position
• Result: positive, negative, unclear or unable to test
• Pain score
• Symptom location
• Whether symptoms were familiar
• Apprehension
• Instability sensation
• Ulnar nerve symptoms if present
• Force direction
• Comparison side
• Throwing phase or task that matches symptoms
• Irritability
• Reason for stopping if relevant
• Related valgus test findings
• Related strength findings
• Confidence in interpretation
• Further assessment or referral notes if appropriate
• Retest date if relevant

Recording these details improves repeatability, communication, client education, assessment reasoning, monitoring over time, team consistency and reporting quality.

Related Tests / Internal Links

• Moving Valgus Stress Test
• Valgus Stress Test of the Elbow
• Ulnar Nerve Assessment
• Elbow Flexion Test
• Grip Strength
• Pinch Strength
• Wrist Flexion Strength
• Forearm Pronation Strength
• Shoulder Range of Motion
• Scapular Assistance Test
• Throwing Assessment Notes

FAQs

What does the Milking Manoeuvre Test assess?

It assesses whether valgus stress in a flexed elbow position reproduces medial elbow symptoms associated with UCL-related assessment reasoning.

What is a positive Milking Manoeuvre Test?

A positive finding may include familiar medial elbow pain, apprehension, instability sensation or symptom reproduction during the valgus stress.

Does a positive test diagnose a UCL tear?

No. It may increase suspicion, but it does not confirm a UCL tear on its own.

Does a negative test exclude UCL involvement?

No. A negative test does not fully exclude UCL involvement, especially in throwing athletes with symptoms only during high-speed sport tasks.

Who is this test most useful for?

It is most useful for overhead athletes or clients with valgus-load medial elbow symptoms.

Should ulnar nerve symptoms be recorded?

Yes. Tingling, numbness or altered sensation into the ulnar hand should be recorded and interpreted separately.

Is laxity the same as injury?

No. Some throwing athletes may have mild valgus laxity without symptoms, so symptom reproduction and history are critical.

What should it be combined with?

Throwing history, palpation, Valgus Stress Test, Moving Valgus Stress Test, flexor-pronator testing, ulnar nerve assessment and imaging where relevant.

Key Takeaways

The Milking Manoeuvre Test applies valgus stress to the medial elbow by pulling through the thumb.

It is commonly used in UCL assessment reasoning, particularly in overhead throwers.

A positive finding is most meaningful when it reproduces familiar medial elbow symptoms.

The test does not confirm a UCL tear or grade injury severity on its own.

Diagnostic accuracy evidence for the Milking Manoeuvre as a stand-alone test is limited.

Measurz recording should include elbow angle, shoulder position, pain location, symptom familiarity, apprehension, instability sensation and comparison side.

References

Cain, E. L., Andrews, J. R., Dugas, J. R., Wilk, K. E., McMichael, C. S., Walter, J. C., & Riley, R. S. (2010). Outcome of ulnar collateral ligament reconstruction of the elbow in 1281 athletes: Results in 743 athletes with minimum 2-year follow-up. The American Journal of Sports Medicine, 38(12), 2426–2434. https://doi.org/10.1177/0363546510378100

O’Driscoll, S. W., Lawton, R. L., & Smith, A. M. (2005). The “moving valgus stress test” for medial collateral ligament tears of the elbow. The American Journal of Sports Medicine, 33(2), 231–239. https://doi.org/10.1177/0363546504267804

Veltri, D. M., O’Brien, S. J., Field, L. D., Deutsch, A., Altchek, D. W., & Potter, H. G. (1995). The milking maneuver: A new test to evaluate the medial collateral ligament of the elbow in the throwing athlete. Journal of Shoulder and Elbow Surgery, 4(1), S10. https://doi.org/10.1016/S1058-2746(95)80048-4

Wilk, K. E., Arrigo, C. A., Dugas, J. R., & Andrews, J. R. (2012). Current concepts in the rehabilitation of the overhead throwing athlete. The American Journal of Sports Medicine, 40(7), 1637–1648. https://doi.org/10.1177/0363546511430396

Zaremski, J. L., McClelland, J., Vincent, H. K., & Horodyski, M. (2025). Diagnostic dilemma: Testing to differentiate UCL sprains from flexor-pronator elbow strains in the overhead athlete. International Journal of Sports Physical Therapy.