There was excellent preservation of proximal bone.
Restoration of proximal bone was noted in 56%.
However, there is a paucity of biomechanical studies concerning the safety as well as yield of proximal bone graft harvesting.
The prosthesis is titanium, has proximal circumferential plasma-spray coating, and is designed for proximal bone loading.
Therefore, the results provide support for using a dual-tapered stem in revision cases with proximal bone loss.
On the dorsal aspect, a single large muscle in reptiles, puboischiofemoralis, runs from the bones of the pelvis to the femur (the proximal bone of the hind limb).
Short femoral stems have been designed with the aims of reducing proximal bone loss, improving load transfer, and increasing compressive loads at the medial proximal femoral calcar.
The low-modulus composite stem had positive effects on early proximal bone remodeling in Gruen regions 1, 2, 6, and 7 (P <.04).
Several important factors for stable fixation, determined in clinical evaluations from the literature, were evident in both designs: high levels of proximal bone loss and distal bone densification.
Therefore, the loading of the proximal bone tissue is far more pronounced than in the case of a standard prosthesis, demonstrating the feasibility of the load-shift concept.
This study supports the contention that the use of a cemented stem reduces proximal stresses and may result in proximal bone resorption.
