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Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...

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The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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Birmingham hip resurfacing: is acetabular bone conserved?

P Moonot1, P J Singh, M D Cronin

  • 1South West London Elective Orthopaedic Centre, Denbies Wing, Dorking Road, Epsom, Surrey KT18 7EG, UK.

The Journal of Bone and Joint Surgery. British Volume
|March 4, 2008
PubMed
Summary

Birmingham hip resurfacing may conserve acetabular bone in women, using smaller components than uncemented total hip replacements. Surgeon technique significantly impacts component size in hip resurfacing, unlike in total hip replacement.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Surgical Outcomes Research

Background:

  • Hip resurfacing aims to conserve bone, particularly the proximal femur.
  • Debate exists regarding acetabular bone preservation with hip resurfacing compared to total hip replacement.
  • Understanding acetabular component sizing is crucial for evaluating bone conservation in hip replacement procedures.

Purpose of the Study:

  • To investigate acetabular bone conservation in Birmingham hip resurfacing.
  • To compare acetabular component sizes between hip resurfacing and uncemented total hip replacement.
  • To analyze the influence of surgeon technique on acetabular component sizing.

Main Methods:

  • Retrospective analysis of 500 Birmingham hip resurfacing and 700 uncemented total hip replacement cases (1996-2005).
  • Comparison of acetabular component outside diameters between the two procedures, matched for age and gender.
  • Analysis of component sizes used by two individual surgeons for each procedure type.

Main Results:

  • Women undergoing hip resurfacing required significantly smaller acetabular components (mean difference 2.03 mm, p < 0.0001).
  • No significant difference in acetabular component size was observed between hip resurfacing and total hip replacement in men (p = 0.77).
  • Surgeon variability significantly affected acetabular component size in hip resurfacing (men: p = 0.0015; women: p = 0.001), but not in total hip replacement.

Conclusions:

  • Birmingham hip resurfacing demonstrates potential for acetabular bone conservation in women.
  • Acetabular preparation technique significantly influences component size in hip resurfacing.
  • Further research is needed to optimize acetabular bone management in hip resurfacing procedures.