Joong-Myung Lee; Jae-Bum Jeon

doi:10.4055/jkoa.2014.49.2.126

Journal List > J Korean Orthop Assoc > v.49(2) > 1013283

Go to TopGo to Top Go to BottomGo to Bottom

TOOLS

Lee and Jeon: Result of a Minimum Five-Year Follow-Up of Hip Arthroplasty Using the Bencox® Hip Stem

Original Article

Journal of the Korean Orthopaedic Association 2014; 49(2): 126-132.

Published online: 29 April 2014

DOI: https://doi.org/10.4055/jkoa.2014.49.2.126

Result of a Minimum Five-Year Follow-Up of Hip Arthroplasty Using the Bencox® Hip Stem

Joong-Myung Lee, M.D., Ph.D., Jae-Bum Jeon, M.D.^*

Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea.

^*Department of Orthopedic Surgery, National Medical Center, Seoul, Korea.

Correspondence to: Joong-Myung Lee, M.D., Ph.D. Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam 463-712, Korea. TEL: +82-31-780-5289, FAX: +82-31-708-3578, drjmlee@naver.com

Received 10 September 2013 Revised 25 November 2013 Accepted 19 December 2013

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

The purpose of this study is to report the results of artificial hip arthroplasty with minimum five-year follow-up using the Bencox® (Corentec) hip stem, the first total hip prosthesis developed in Korea.

Materials and Methods

We evaluated 27 hips in patients with femoral neck or intertrochanteric fracture (fracture group) and 58 hips in patients with arthritis or osteonecrosis of the femoral head (arthritis group) who underwent hip arthroplasty using a Bencox® hip stem in combination with Bencox® bipolar cup and Bencox® acetabular cup between September 2006 and February 2008. Patients in the fracture group underwent bipolar hip arthroplasty, and those in the arthritis group underwent total hip arthroplasty.

Results

During the follow-up period, there were no cases of revision of the femoral stem. Mean Harris hip score was 94 at the latest follow-up in (femoral neck or intertrochanteric) the fracture group, and improved from 57 preoperatively to 98 at the latest follow-up in the arthritis (or avascular necrosis) group. Radiographically, endosteal bone ongrowth was found in 23 of 27 cases in the fracture group (85.2%) and 56 of 58 cases in the arthritis group (96.6%). Stem loosening, infection, dislocation, and ceramic breakage were not noted.

Conclusion

Clinical and radiographic evaluations of hip arthroplasty using the Bencox® hip stem showed excellent outcomes with a minimum of five-year follow-up.

Keywords: Bencox® hip stem, cementless hip replacement arthroplasty

Figures and Tables

Figure 1

Bencox® (Corentec, Seoul, Korea) cementless femoral stem. (A) Femoral component has a tapered wedge shape. (B) Femoral component has three vertical ribs.

Figure 2

(A) A 68-year-old female patient had a right femur neck fracture. (B) The postoperative radiograph shows good stem position and canal fit. (C, D) At postoperative five years, anteriorposterior and lateral radiograph shows a stable bony fixation of the femoral stem. Bone ongrowth was noted (arrows).

Figure 3

(A) Preoperative anteriorposterior radiograph of a 55-year-old male with osteoarthritis of both hip joints. (B) Postoperative radiograph shows good stem position and canal fit hip left. (C) Two months later, postoperative radiograph shows an ideal stem position and canal fit hip right. (D) At postoperative six years, anteriorposterior radiograph shows good bony fixation of the femoral stem. Bone ongrowth was noted (arrows).

References

1. DeLee JG, Charnley J. Radiological demarcation of cemented sockets in total hip replacement. Clin Orthop Relat Res. 1976; 121:20–32.

2. Malik A, Maheshwari A, Dorr LD. Impingement with total hip replacement. J Bone Joint Surg Am. 2007; 89:1832–1842.

3. Archibeck MJ, Jacobs JJ, Black J. Alternate bearing surfaces in total joint arthroplasty: biologic considerations. Clin Orthop Relat Res. 2000; 379:12–21.

4. Synder M, Drobniewski M, Kozłowski P, Grzegorzewski A. Ceramic-ceramic articulation in uncemented total hip arthroplasty. Wiad Lek. 2005; 58:193–197.

5. Learmonth ID, Young C, Rorabeck C. The operation of the century: total hip replacement. Lancet. 2007; 370:1508–1519.

6. Lee JM, Nam HT, Lee SH. Bipolar hemiarthroplasty with cementless femoral stem for unstable intertrochanteric fractures. J Korean Orthop Assoc. 2012; 47:79–85.

7. Harris WH. Traumatic arthritis of the hip after dislocation and acetabular fractures: treatment by mold arthroplasty. An end-result study using a new method of result evaluation. J Bone Joint Surg Am. 1969; 51:737–755.

8. Gruen TA, McNeice GM, Amstutz HC. "Modes of failure" of cemented stem-type femoral components: a radiographic analysis of loosening. Clin Orthop Relat Res. 1979; 141:17–27.

9. Joshi RP, Eftekhar NS, McMahon DJ, Nercessian OA. Osteolysis after Charnley primary low-friction arthroplasty. A comparison of two matched paired groups. J Bone Joint Surg Br. 1998; 80:585–590.

10. Brooker AF, Bowerman JW, Robinson RA, Riley LH Jr. Ectopic ossification following total hip replacement. Incidence and a method of classification. J Bone Joint Surg Am. 1973; 55:1629–1632.

11. Lee SR, Bostrom MP. Periprosthetic fractures of the femur after total hip arthroplasty. Instr Course Lect. 2004; 53:111–118.

12. Rothman RH, Cohn JC. Cemented versus cementless total hip arthroplasty. A critical review. Clin Orthop Relat Res. 1990; 254:153–169.

13. Engh CA, Bobyn JD, Glassman AH. Porous-coated hip replacement. The factors governing bone ingrowth, stress shielding, and clinical results. J Bone Joint Surg Br. 1987; 69:45–55.

14. Davies MS, Parker BC, Ward DA, Hua J, Walker PS. Migration of the uncemented CLS femoral component. Orthopedics. 1999; 22:225–228.

15. Ström H, Nilsson O, Milbrink J, Mallmin H, Larsson S. Early migration pattern of the uncemented CLS stem in total hip arthroplasties. Clin Orthop Relat Res. 2007; 454:127–132.

16. Park YS, Kim YS, Lee JM, Sun DH, Moon YW, Lim SJ. Cementless total hip arthroplasty with use of the COREN hip system. J Korean Hip Soc. 2007; 19:457–462.

17. Schramm M, Keck F, Hohmann D, Pitto RP. Total hip arthroplasty using an uncemented femoral component with taper design: outcome at 10-year follow-up. Arch Orthop Trauma Surg. 2000; 120:407–412.

18. Green S, Moore T, Proano F. Bipolar prosthetic replacement for the management of unstable intertrochanteric hip fractures in the elderly. Clin Orthop Relat Res. 1987; 224:169–177.

19. Haentjens P, Casteleyn PP, De Boeck H, Handelberg F, Opdecam P. Treatment of unstable intertrochanteric and subtrochanteric fractures in elderly patients. Primary bipolar arthroplasty compared with internal fixation. J Bone Joint Surg Am. 1989; 71:1214–1225.

20. Khalily C, Lester DK. Results of a tapered cementless femoral stem implanted in varus. J Arthroplasty. 2002; 17:463–466.

TOOLS

Similar articles