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At the hip, a DXA-equivalent T-score may be calculated for comparison to the WHO classification at the proximal femur as normal, osteopenia (T-Score < -1.0 and > -2.5) or osteoporosis (T-Score < -2.5). [17] This T-Score may also be used for fracture risk probability calculation in the WHO FRAX tool [18] with "T-Score" as the appropriate DXA ...
Dual-energy X-ray absorptiometry (DXA, or DEXA [1]) is a means of measuring bone mineral density (BMD) with spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted, the bone mineral density (BMD) can be determined from the absorption of each beam by bone. Dual ...
Hip resurfacing is a surgical alternative to total hip replacement (THR). The procedure consists of placing a cap (usually made of cobalt-chrome metal), which is hollow and shaped similarly to the cap of a mushroom, over the head of the femur while a matching metal cup (similar to what is used with a THR) is placed in the acetabulum (pelvis socket), replacing the articulating surfaces of the ...
Su, an orthopedic surgeon who specializes in a hip resurfacing procedure that has helped pro athletes return to top form, operated June 1 on Kane's right hip at the Hospital for Special Surgery in ...
Stabilize the pelvis and let the affected leg drop. A positive test is indicated if the leg does not adduct to the table. [1] Thomas test for tight hip flexors both performed by the provider holding the unaffected leg to the chest and leaving the affected leg on the table. If the affected leg cannot lie flat on the table it is a positive test. [1]
Conventional hip resurfacing techniques were created as an alternative to total hip replacement, whereby only the diseased cartilage and a small surrounding area of the femur are removed, to be replaced with new surfaces. [1] Although hip resurfacing has been around for some 40 years, the contemporary metal on metal bearing hip resurfacing has ...
MRI imaging may follow, particularly if there is no specific evidence on radiographs, producing a three-dimensional reconstruction of the joint for better definition, to evaluate the hip cartilage, or measure hip socket angles (e.g. the alpha-angle as described by Nötzli [22] in 2-D and by Siebenrock in 3-D [23]).
[1] [2] [3] This is generally performed in real-time though there may be delays of seconds or minutes depending on the modality and application. Image-guided surgery helps surgeons perform safer and less invasive procedures and has become a recognized standard of care in managing disorders including cranial, otorhinolaryngology, spine ...