Medial epicondylitis, commonly called golfer’s elbow, is diagnosed primarily through hands-on physical tests that reproduce your pain at the inner elbow. In most cases, a clinician can confirm the diagnosis in the office without any imaging at all. The key is provoking the tendons that attach to the bony bump on the inside of your elbow and seeing whether that recreates your symptoms.
The Standard Golfer’s Elbow Test
The most widely used clinical test has two versions: passive and active. Both can be done while you’re seated or standing.
In the passive version, the examiner holds your elbow with one hand while pressing on the bony bump at the inner elbow (the medial epicondyle). With the other hand, they straighten your elbow, wrist, and fingers completely while rotating your forearm so your palm faces up. This stretches the tendons along the inner forearm. If this movement reproduces a sharp or familiar pain right at the inner elbow, the test is considered positive.
The active version works in the opposite direction. Instead of the examiner stretching you, you actively bend your wrist downward and rotate your forearm palm-down while the examiner pushes against you, resisting your movement. Pain at the medial epicondyle during this resisted motion again points toward medial epicondylitis. Many clinicians run both versions because the combination gives a more complete picture. One stresses the tendons through stretch, the other through contraction.
Polk’s Test: A Simple Weighted Lift
Polk’s test offers a practical alternative that you could even try at home to get a rough sense of what’s going on. You sit with your elbow bent and lift an object weighing about 2.5 kilograms (roughly 5.5 pounds). A hand weight, heavy book, or loaded bag works fine.
The test has two phases. First, you grip the object with your palm facing the floor and try to lift it. Pain at the outer elbow during this motion suggests lateral epicondylitis (tennis elbow) instead. Second, you grip the same object with your palm facing the ceiling and lift. Pain at the inner elbow during this phase points to medial epicondylitis. The logic is straightforward: each grip position loads a different set of forearm muscles, and the one that hurts tells you which tendon attachment is inflamed.
What Your Examiner Checks Beyond the Tests
A thorough evaluation goes beyond provocation maneuvers. Your clinician will press directly along the medial epicondyle and the tendon that runs from it down the inner forearm, checking for point tenderness. They’ll also assess your grip strength, since medial epicondylitis typically weakens it, and compare the affected side to the other arm.
Importantly, the exam should also rule out other conditions that cause inner elbow pain. Ulnar nerve problems can mimic golfer’s elbow but produce tingling or numbness in the ring and little fingers, something medial epicondylitis does not cause. Your examiner may tap over the ulnar nerve groove behind the elbow (Tinel’s sign) to check for nerve irritation. They’ll also test forearm rotation against resistance in specific positions to rule out pronator syndrome, a compression of the median nerve in the forearm that can overlap in location but causes different sensory symptoms.
When Imaging Comes Into Play
Most people with golfer’s elbow never need imaging. Physical examination alone is usually enough. But if your symptoms don’t improve with initial treatment, if the onset was sudden or traumatic, or if your clinician suspects a tear rather than simple tendon irritation, imaging becomes useful.
X-Rays
Plain X-rays won’t show tendon damage directly, but they can reveal calcification within the flexor tendons or small bone spurs (traction osteophytes) at the medial epicondyle. These findings suggest chronic, longstanding tendon stress. X-rays are most valuable when your pain started after a specific injury, since they can rule out fractures or loose bone fragments.
Ultrasound
Musculoskeletal ultrasound is the most common first-line imaging tool for medial epicondylitis. A healthy tendon attachment at the inner elbow has a uniform thickness and a consistent fibrous texture on ultrasound. In golfer’s elbow, the common flexor tendon typically appears thickened with dark (hypoechoic) patches representing areas of degeneration. More advanced cases may show partial or full-thickness tears, new blood vessel growth within the damaged tendon (a sign of chronic irritation), calcifications, or irregular bone surfaces at the epicondyle. Ultrasound has the advantage of being done in real time during your visit, with no radiation, and the examiner can move your arm to see how the tendon behaves under stress.
MRI
MRI provides the most detailed picture and is typically reserved for cases where surgery is being considered or the diagnosis remains unclear after ultrasound. It can distinguish between partial and complete tears of the common flexor tendon and reveal associated problems like ligament damage or bone marrow swelling. If you’ve had persistent inner elbow pain for months despite treatment, an MRI helps your clinician decide whether a structural problem needs surgical repair or whether continued conservative management makes sense.
Conditions That Mimic Golfer’s Elbow
Inner elbow pain isn’t always medial epicondylitis, and part of testing for it means ruling out lookalikes. The ulnar collateral ligament sits just beneath the common flexor tendon, and injuries to it (common in throwing athletes) produce pain in a very similar location. The difference is that ligament injuries tend to hurt most during the acceleration phase of a throw rather than during gripping or wrist flexion.
Ulnar neuropathy is another common mimic. The ulnar nerve runs through a groove right behind the medial epicondyle, and when it’s irritated or compressed, it causes aching at the inner elbow that can feel identical to golfer’s elbow. The distinguishing feature is nerve symptoms: numbness or tingling in the pinky and ring fingers, or weakness in the small muscles of the hand. If your examiner finds both tenderness at the epicondyle and nerve-related symptoms, both conditions may be present at the same time, which happens in a meaningful percentage of cases.
Pronator syndrome involves compression of the median nerve as it passes through the muscles of the inner forearm. It produces forearm aching and sometimes numbness in the thumb, index, and middle fingers. Specific resisted movements of the forearm help separate it from medial epicondylitis during the exam.
What to Expect From the Diagnostic Process
For most people, the entire diagnostic process takes a single office visit. Your clinician will ask about your activities (golf, throwing sports, weightlifting, repetitive hand use at work), press on the inner elbow, run the provocation tests described above, and check for nerve involvement. If the story and exam findings line up, that’s the diagnosis.
If something doesn’t fit, or if you’ve already tried rest and therapy without improvement, expect to be sent for ultrasound or possibly MRI. These aren’t routine for a first visit but become important for guiding treatment when the straightforward approach hasn’t worked. The goal of imaging at that stage is to answer a specific question: is there a tear, and if so, how severe is it?