CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT

M Mohamed; J L Dennison; S B O’Brien; D E Beverland; J R Nixon

doi:10.1302/0301-620X.84BSUPP_II.0840153f

Current issue

CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT

M Mohamed
J L Dennison
S B O’Brien
D E Beverland
J R Nixon

CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT

Mohamed M, Dennison JL, O’Brien SB, Beverland DE, Nixon JR. CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT. Orthop Procs. 2002;84-B(SUPP_II):153-154. doi:10.1302/0301-620X.84BSUPP_II.0840153f

Mohamed, M, et al. “CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT.” Orthopaedic Proceedings, vol. 84-B, no. SUPP_II, 2002, pp. 153-154., https://doi.org/10.1302/0301-620X.84BSUPP_II.0840153f

Mohamed, M., Dennison, J. L., O’Brien, S. B., Beverland, D. E., & Nixon, J. R. (2002). CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT. Orthopaedic Proceedings, 84-B(SUPP_II), 153-154. https://doi.org/10.1302/0301-620X.84BSUPP_II.0840153f

Mohamed, M., Dennison, J. L., O’Brien, S. B., Beverland, D. E. and Nixon, J. R. (2002) “CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT.” Orthopaedic Proceedings, 84-B(SUPP_II), pp. 153-154. Available at: https://doi.org/10.1302/0301-620X.84BSUPP_II.0840153f

Mohamed, M, J L Dennison, S B O’Brien, D E Beverland, and J R Nixon. “CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT.” Orthopaedic Proceedings 84-B, no. SUPP_II (2002): 153-154. https://doi.org/10.1302/0301-620X.84BSUPP_II.0840153f

Mohamed M, Dennison JL, O’Brien SB, Beverland DE, Nixon JR. CONTROL OF JOINT CENTRE AND LIMB LENGTH USING A CUSTOM-MADE FEMORAL COMPONENT DURING TOTAL HIP REPLACEMENT. Orthop Procs. 2002 Jul 1;84-B(SUPP_II):153-154. https://doi.org/10.1302/0301-620X.84BSUPP_II.0840153f

Copy to clipboard

Mendeley

BibTeX

EndNote

RIS

Abstract

Introduction: Since 1992 over 3000 custom-made cemented titanium femoral components have been implanted during total hip replacement in our centre.

Stems are machined using CAD-CAM. Measurements are made from screened AP and lateral x-rays of known magnification. Normal joint centre is recreated by controlling offset and vertical height of the femoral component.

Method: Joint centre and limb length were analysed radiologically in consecutive 100 patients following total hip replacement for unilateral arthritis. Joint centre was defined relative to the pelvis and femur.

The anatomical axis and offset of the femur were defined using a screened x-ray of known magnification taken to show maximum offset. Femoral centre height was defined relative to the greater trochanter.

Results: In general, acetabular joint centre was placed medial and high, tending to reduce limb length slightly. Conversely, on the femoral side the tendency was to leave the component proud, producing an increase in limb length. Most patients had limb length restored to within 6mm of normal.

This study confirms the effectiveness of the Belfast Custom Stem in restoring joint centre and limb length.

The abstracts were prepared by Peter Kay. Correspondence should be addressed to him at Centre for Hip Surgery, Wrightington Hospital, Appley Bridge, Wigan WN6 9EP.