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Dynamic hip screw. Dynamic hip screw (DHS) or Sliding Screw Fixation is a type of orthopaedic implant designed for fixation of certain types of hip fractures which allows controlled dynamic sliding of the femoral head component along the construct.
A total hip replacement (total hip arthroplasty) consists of replacing both the acetabulum and the femoral head while hemiarthroplasty generally only replaces the femoral head. Hip replacement is one of the most common orthopaedic operations, though patient satisfaction varies widely between different techniques and implants. [2]
In 1949, Phemister described a variation on the technique where the graft tissue was inserted into the base of the greater trochanter and femoral neck in order to treat osteonecrosis. [6] A 1967 study found the original Phemister graft to be more effective than the cortical sliding graft and cancellous graft for fractures of the tibia. [7]
Alternatively, an initial surgery may be performed to remove previous prosthetic material, and the new prosthesis is then inserted in a separate surgery at a later time. In such cases, especially when complicated by infection, a spacer may be used, which is a sturdy mass to provide some basic joint stability and mobility until a more permanent ...
The neck is flattened from before backward, contracted in the middle, and broader laterally than medially. The vertical diameter of the lateral half is increased by the obliquity of the lower edge, which slopes downward to join the body at the level of the lesser trochanter , so that it measures one-third more than the antero-posterior diameter.
Hip resurfacing has been developed as 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 like 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 ...
Condylar blade plate for condylar fractures of the femur [16] Ender's nail for fixing intertrochanteric fracture [17] Grosse-Kempf nail for tibial or femoral shaft fracture [18] Hansson pin (or LIH for Lars Ingvar Hansson), a hook-pin used for fractures of the femoral neck [19] Harrington rod for fixation of the spine [20]
X-ray showing the proximal portion of a fractured tibia with an intramedullary nail Proximal femur nail with locking and stabilisation screws for treatment of femur fractures of left thigh An intramedullary rod , also known as an intramedullary nail (IM nail) or inter-locking nail or Küntscher nail (without proximal or distal fixation), is a ...