RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM

D. M Wright; A Alonso; D. H Sochart; M Rathinam

doi:10.1302/0301-620X.88BSUPP_II.0880245d

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RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM

D. M Wright
A Alonso
D. H Sochart
M Rathinam

RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM

Wright DM, Alonso A, Sochart DH, Rathinam M. RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM. Orthop Procs. 2006;88-B(SUPP_II):245-245. doi:10.1302/0301-620X.88BSUPP_II.0880245d

Wright, D. M, et al. “RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM.” Orthopaedic Proceedings, vol. 88-B, no. SUPP_II, 2006, pp. 245-245., https://doi.org/10.1302/0301-620X.88BSUPP_II.0880245d

Wright, D. M., Alonso, A., Sochart, D. H., & Rathinam, M. (2006). RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM. Orthopaedic Proceedings, 88-B(SUPP_II), 245-245. https://doi.org/10.1302/0301-620X.88BSUPP_II.0880245d

Wright, D. M., Alonso, A., Sochart, D. H. and Rathinam, M. (2006) “RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM.” Orthopaedic Proceedings, 88-B(SUPP_II), pp. 245-245. Available at: https://doi.org/10.1302/0301-620X.88BSUPP_II.0880245d

Wright, D. M, A Alonso, D. H Sochart, and M Rathinam. “RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM.” Orthopaedic Proceedings 88-B, no. SUPP_II (2006): 245-245. https://doi.org/10.1302/0301-620X.88BSUPP_II.0880245d

Wright DM, Alonso A, Sochart DH, Rathinam M. RESULTS OF THE C-STEM TOTAL HIP REPLACEMENT SYSTEM. Orthop Procs. 2006 May 1;88-B(SUPP_II):245-245. https://doi.org/10.1302/0301-620X.88BSUPP_II.0880245d

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Abstract

This is a prospective study looking at 116 consecutive total hip replacements in 110 patients using the C-Stem total hip replacement system (Depuy International, Leeds, UK) between March 2000 and October 2002. This is the first documented study of results of the C-Stem outside Wrightington Hospital where it was developed.

There were 69 females and 41 male patients. Average age was 66 years (Range 32 – 89 years). 64 patients had a right hip replacement, 52 patients had a left hip replacement and 6 were bilateral. The duration of follow up was from 24 to 55 months, with an average of 38.75 months.

All patients had a cemented C-stem via a posterior approach. 107 with a metal head and 9 with a ceramic head. Cemented, all polyethylene cups were used. 82 hips had an Opera cup inserted and 34 had an Ogee cup inserted. Palacos R with Gentamicin was used for the cement.

103 femoral stems were neutral.12 stems were in varus (5–10 degrees) and 1 stem was in valgus (5–10degrees). No stems were greater than 10 degrees in either direction. There were no lucencies in any of the zones described by Gruen. The average amount of subsidence of the stem was 0.86mm (range 0–4mm).

The average cup angle was 44.29 degrees (SD = +/− 4.85). 8 acetabular components had a 0.5mm lucent area in zone 1 and 2 acetabular components had 1mm lucent area in zone 1. All of these lucencies were present on the immediate postoperative x-ray and none were progressive.

There were no lucencies in the other zones. There have been no incidences of deep infection, fatal P.E, dislocation or revision.

We conclude that the C-Stem has produced excellent results in the short term in keeping with the criteria of the NICE guidelines.

Editoral Secretary Mr Peter Howard. Correspondence should be addressed to BHS at the Royal College of Surgeons, 35 - 43 Lincoln’s Inn Fields, London WC2A 3PN.