Bone Blog Frequently Asked Questions

It can be. Going downstairs often places substantial demand on the kneecap joint while the quadriceps controls the body's descent. Going upstairs also loads the knee but may provoke tendon or muscle-related symptoms. The distinction is useful but is not diagnostic by itself.

Pain behind or around the kneecap may be related to patellofemoral pain, maltracking, cartilage irritation, or patellofemoral arthritis. Age, activity, alignment, examination findings, and imaging help distinguish them.

No. Arthritis is one possible cause, particularly in middle-aged or older adults, but patellofemoral pain, tendon irritation, and meniscal problems can also cause stair-related pain.

Not necessarily. Gradual pain without an injury, instability, swelling, or mechanical symptoms often does not require an immediate MRI. An examination and X-rays may be more appropriate first.

The right program depends on the cause. Patellofemoral rehabilitation often includes quadriceps and hip strengthening, gait assessment, and correction of movement mechanics. Tendon problems may require a structured progressive-loading program.

Usually not for mild, gradual symptoms, but activity may need to be temporarily modified. Avoid repeatedly forcing the knee through substantial pain. Complete prolonged inactivity can also lead to weakness and deconditioning.

Consider evaluation when symptoms continue beyond a reasonable trial of conservative treatment, are worsening, interfere with function, or involve swelling, locking, instability, or a history of injury.

A red, hot, severely swollen knee, fever, inability to bear weight, major trauma, sudden loss of the ability to straighten the knee, or a true mechanical block warrants prompt medical assessment.

Not necessarily. Joint sounds can come from pressure changes in joint fluid, tendon movement, or rougher surfaces. Pain, instability, injury, and loss of function are more useful signals than the sound alone.

It is common and is often reasonable to observe when it is stable, painless, and not changing how the joint functions. Persistent grinding or crepitus is a different type of sound and should be considered in context.

A sound alone does not always require stopping. Stop when the pop is painful or when the joint feels unstable or no longer functions normally.

Not automatically. Imaging depends on the history, examination, and any initial X-rays. MRI is more useful when pain, instability, abnormal findings, or another suspected injury justify it.

Pain, instability, locking, catching, symptoms after an injury, a sudden change, or loss of normal motion or function should be evaluated.

Not in every situation. MRI is generally better for many soft-tissue and bone-marrow questions, while CT generally provides better detail of bony anatomy. The best test is the one suited to the clinical question.

X-rays are usually the first study. CT can define complex fracture anatomy in detail, while MRI can identify some fractures that are not visible on X-ray and can show associated bone-marrow or soft-tissue injury. The appropriate next test varies by the bone, injury, and examination.

No. MRI uses a powerful magnetic field and radio waves. CT uses X-rays and therefore involves ionizing radiation.

Possibly. Many orthopedic implants and some cardiac devices can be scanned under specified conditions, but every implant or device must be identified and screened before entering the MRI environment. Never assume a device is MRI-safe without verification.

Usually not. Most routine musculoskeletal studies are performed without contrast. Contrast may be considered for suspected tumor, infection, selected postoperative questions, or an arthrogram, among other specific indications.

MRI generally takes longer and requires the patient to remain still inside the scanner. Many MRI examinations take 15 to 45 minutes, although some take longer. A CT scan is commonly completed within a few minutes.

Imaging can reveal age-related changes, prior injuries, or other abnormalities that do not match the location or pattern of a patient's symptoms. That is why the images and radiology report must be interpreted alongside the patient's history and physical examination.

A radiologist reviews the images and prepares a report. The treating clinician then combines that information with the patient's symptoms, examination, prior imaging, and treatment history to determine what the findings mean clinically.