Bursitis vs Tendonitis: Key Differences, Symptoms, and Care

If your shoulder aches every time you reach for a high shelf, or your hip throbs the moment you lie on your side, you have probably wondered whether it's bursitis vs tendonitis. Both conditions show up in the same joints, both develop from repetitive motion, and both can make ordinary tasks like getting dressed or climbing stairs feel like work. Because the symptoms overlap so much, the two are easy to confuse, and even the treatment advice you find online often blurs them together.

Telling bursitis from tendonitis still matters. Each one has different warning signs, responds best to slightly different care, and calls for different caution when you use massage or heat at home. This guide is for anyone dealing with joint pain in the shoulder, hip, elbow, or knee who wants a clear picture before talking with a clinician. It covers the anatomy of each structure, where each condition appears, how the pain differs, causes, treatment, safe massage, and when to get checked.

What a Bursa and a Tendon Actually Do

Both conditions involve soft tissue around a joint, but the bursa and the tendon have very different jobs. Understanding those jobs explains why the pain feels different and why each one gets irritated.

The Bursa: A Built-In Cushion

Mayo Clinic describes bursae as small, fluid-filled sacs that cushion the bones, tendons, and muscles near your joints. Each bursa contains a thin layer of lubricating fluid, which lets tissue glide over bone without friction. There are more than 100 bursae throughout the body.

When a bursa is irritated by repeated pressure, friction, or a direct blow, it can fill with excess fluid and swell. That swollen sac is what produces the puffy, tender spot you may feel over the point of your elbow or the outside of your hip.

The Tendon: The Cable That Moves the Bone

Mayo Clinic defines tendinitis as inflammation or irritation of a tendon, the thick fibrous cord that attaches muscle to bone. Every time a muscle contracts, its tendon transfers that pull to the bone and moves the joint. Tendons are strong, but they have a relatively limited blood supply, which is one reason irritated tendons can be slow to settle.

Tendonitis usually develops from repeated loading rather than a single event. Small amounts of stress build faster than the tissue can adapt, and the tendon becomes painful when the muscle works.

Why the Two Get Confused

Bursae and tendons often sit right next to each other. In the shoulder, for example, the subacromial bursa lies directly on top of the rotator cuff tendons. Key overlaps include:

• Both sit close to the same major joints
• Both are irritated by repetitive motion and sustained pressure
• Both produce localized pain, tenderness, and stiffness
• One can irritate the other, so the two sometimes occur together

Where Bursitis vs Tendonitis Shows Up

Both conditions favor the joints you use most and load hardest. Here is how each one typically appears in the four most frequently affected areas.

Shoulder

Subacromial bursitis inflames the bursa that sits beneath the bony tip of the shoulder. Rotator cuff tendonitis affects the tendons that lift and rotate the arm. The two frequently overlap because the bursa and tendons share the same narrow space, and swelling in one crowds the other. Pain often appears with overhead reaching and can make sleeping on the affected side uncomfortable.

Hip

Trochanteric bursitis affects the bursa over the bony point on the outside of the hip, called the greater trochanter. It typically hurts when you lie on that side, climb stairs, or stand up from a chair. Gluteal tendinopathy, involving the tendons of the gluteus medius and minimus, causes pain in nearly the same spot. If nighttime hip pain is your main issue, our guide on sleep and massage strategies for trochanteric hip bursitis goes deeper.

Elbow

The elbow shows the clearest contrast between the two conditions:

• Olecranon bursitis: A soft, visible swelling at the point of the elbow, sometimes called "student's elbow" because it can come from leaning on a desk.
• Lateral epicondylitis (tennis elbow): Tendon irritation on the outer elbow, painful with gripping and lifting.
• Medial epicondylitis (golfer's elbow): Tendon irritation on the inner elbow, aggravated by wrist flexion and gripping.

Knee

Prepatellar bursitis causes swelling over the front of the kneecap and is linked to frequent kneeling. Pes anserine bursitis affects the inner side of the knee, just below the joint. Patellar tendonitis, often called jumper's knee, causes pain just below the kneecap where the tendon attaches, and it flares with squatting, jumping, or stairs.

Bursitis vs Tendonitis: How the Pain Differs

No home checklist replaces an exam, but the character of the pain offers useful clues. A clinician will often press on specific spots and test resisted movement to separate the two.

Signs That Point Toward Bursitis

• A dull, achy, or throbbing pain over a bony prominence
• Visible or palpable swelling, sometimes soft and squishy
• Pain that spikes when you press on the area or lie on it
• Stiffness and aching even when the joint is at rest

Signs That Point Toward Tendonitis

• Pain that follows the line of the tendon rather than sitting in one puffy spot
• Sharper pain when you contract the attached muscle, especially against resistance
• Pain that eases somewhat with rest and returns with activity
• Occasionally a creaking or grating sensation (crepitus) when the tendon moves

The simplest rule of thumb: bursitis tends to hurt when something presses on the area, while tendonitis tends to hurt when the muscle pulls on the tendon. Plenty of cases blur this line, which is exactly why a professional evaluation helps.

What Causes Bursitis and Tendonitis

The two conditions share a core cause: repeated stress that outpaces the tissue's ability to recover. Some triggers lean more toward one condition than the other. Kneeling, leaning on elbows, and lying on one hip put direct pressure on a bursa, while repetitive gripping, throwing, or lifting loads the tendons.

Shared risk factors include:

• Repetitive job tasks or hobbies such as painting, gardening, carpentry, or typing
• Sudden increases in activity after a period of rest
• Poor posture or mechanics that put uneven strain on a joint
• Age-related changes, since tendons become less elastic over time
• Underlying conditions such as rheumatoid arthritis, gout, or diabetes

Bursitis has one cause that tendonitis generally does not: infection. Bursae that sit close to the skin, such as those at the elbow and kneecap, can become infected through a scrape or puncture. Septic bursitis requires prompt medical care.

How Each Condition Is Typically Treated

For both bursitis and tendonitis, first-line care is conservative. The goal is to calm the irritated tissue and remove whatever keeps aggravating it. A clinician may recommend:

• Relative rest and modifying the activity that triggered the pain
• Ice in the early, acutely painful phase
• Over-the-counter pain relievers, taken as your clinician advises
• Physical therapy to restore strength, flexibility, and joint mechanics
• Padding or position changes, such as a pillow between the knees for hip bursitis

When conservative care isn't enough, options diverge a little. A swollen bursa can be drained with a needle (aspiration), and infected bursitis is treated with antibiotics. Corticosteroid injections are sometimes used for both conditions, though clinicians weigh their use near tendons carefully. Surgery is uncommon for either and is generally reserved for cases that don't respond to months of other care.

Where Massage Fits: Working Around the Inflammation

Massage fits into bursitis and tendonitis care in a specific, limited way. It doesn't reduce inflammation in the bursa or tendon itself. What it can do is address the tight, guarded muscles that build up around a painful joint.

The Golden Rule: Work Around, Not On

Never apply firm pressure directly on an inflamed bursa or tendon. Pressing on a swollen bursa can increase irritation, and deep pressure on an irritated tendon can aggravate it. Instead, focus on the larger muscles above and below the painful spot, which often tighten as your body protects the joint.

For a closer look at how this applies to tendons specifically, see our article on whether massage helps with tendonitis.

Why Oscillation Suits Surrounding Muscle Work

Conventional vibration massagers work by shaking the unit against the skin. MedMassager uses oscillating technology to deliver deeper, more controlled vibration than conventional massagers. The Body Massager oscillates in a circular motion through a large, soft, cushioned pad that contours to the body, spreading the movement across a broad area of muscle instead of concentrating it on one point.

For tendonitis, deep oscillation moves surrounding muscle tissue, helping increase blood flow in areas that are stiff or overused. Around a painful hip with trochanteric bursitis, the same circular oscillating action moves the large muscle groups of the glutes and thighs, supporting circulation during use. The Body Massager is an FDA-registered Class I medical device, and you can compare models in the MedMassager Body Massager collection.

Matching the Muscle Group to the Joint

Each painful joint has neighboring muscles that are better targets than the joint itself:

• Shoulder: Upper back and the muscles between the shoulder blades, avoiding the bony tip of the shoulder
• Hip: Glutes, upper hamstrings, and the front of the thigh, staying off the bony outer hip
• Elbow: Upper arm and the meaty part of the forearm, away from the elbow point
• Knee: Calves and thighs, never directly on the kneecap

A Gentle Routine for Surrounding Muscles

Before adding massage to your routine, ask your own care team whether it's appropriate for your diagnosis and stage of healing. If you get the go-ahead, this approach keeps pressure off the inflamed structure. Around a sore knee, the circular oscillating action creates repeated rhythmic movement that helps move blood through the muscle tissue supporting the joint. Near a stiff shoulder, that same mechanical movement stimulates muscle tissue, helping circulate blood through areas that commonly tighten.

1. Get comfortable. Sit in a supportive chair or lie down. For the upper back, you can rest the pad between your back and the back of the chair.
2. Locate the painful spot, then move away from it. Place the cushioned pad on the larger muscle group above or below the joint, not on the swollen or tender point.
3. Start low. Begin with about 10 minutes at the lowest setting, once or twice a day.
4. Let the pad do the work. Hold the slip-resistant handles lightly and rest the pad on the muscle rather than pushing it in.
5. Adjust gradually. If the muscle feels looser and the joint pain doesn't increase, you can raise the intensity one step at a time over several sessions.
6. Stop if pain sharpens. Any increase in joint pain, swelling, or warmth during or after a session means stop and check in with your clinician.

Skip massage entirely if the area is red, hot, or you have a fever, since those can signal infection. The handheld Body Massagers for the back, hips, and legs are designed for this kind of targeted muscle work.

When to See a Clinician

Mild bursitis and tendonitis often improve with rest over a few weeks. Some symptoms, however, call for prompt evaluation rather than home care. See a doctor or physical therapist if you notice any of the following:

• Fever, chills, or redness and warmth over the joint
• Sudden, significant swelling
• A pop or snap followed by sudden weakness, which can signal a tendon tear
• Inability to move the joint or bear weight
• Pain that keeps you awake or doesn't improve after a week or two of rest
• Repeated flare-ups in the same joint

A clinician can confirm the diagnosis through a physical exam and, when needed, ultrasound, MRI, or fluid analysis. Getting the right diagnosis early shapes the right plan, including whether and how home massage fits in.

The Bottom Line

The core of bursitis vs tendonitis comes down to which structure is irritated: the fluid-filled cushion or the cord that connects muscle to bone. Bursitis tends to hurt with pressure and swelling, while tendonitis tends to hurt with movement and load. Both usually respond to rest, activity changes, and guided care, and warning signs like fever, sudden swelling, or weakness need prompt attention.

If your clinician agrees massage fits your plan, keep the pressure on the surrounding muscles and off the inflamed spot. The circular oscillating action of the Body Massager moves the larger muscles around a sore joint, which supports blood flow through tissue that tends to tighten and guard. It is one option in the full MedMassager catalog, and you can compare models built for the back, hips, legs, and arms in the Body Massagers for muscles around sore joints.

This content is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before starting any new treatment or therapy. MedMassager products are FDA-registered Class I medical devices.