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REDAPT

Revision Hip System

REDAPT Revision Hip System

Product Information

Stability without compromise1-12

The key goals of any revision hip are fixation and restoration of function.13

REDAPT Revision Hip System combines unique implant and instrument designs to confidently address your patient needs.


One system for every revision

  • REDAPT Revision Femoral System
  • REDAPT Revision Acetabular System 

 

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References
1.Khan M, OsagieL, Raja S, SarmahS, BostromM, Haddad F. Modular distally fixed stems provide a stable revision solution for extensive bone loss. Paper presented at: British Hip Society 2013.
2.Tsai S, AldingerP. Subsidence analysis of the MDF hip stem. Internal testing. Smith & Nephew 2008. OR-08-168.
3.HofheinzE. Paproskytakeson Berendoverstem modularity [Internet]. Orthopedics This Week, 2013. Accessed: 10 Apr 2017. Available from: www.ryortho.com.
4.BaktirA, KaraaslanF, GencerK, KaraogluS. Femoral revision using the Wagner SL revision stem: a single-surgeon experience featuring 11-19 years of follow-up. J Arthroplasty 2015;30(5):827-834.
5.REDAPT Instructions for use. On file.
6.Schwartz AJ, SpangehlMJ, Beauchamp CP. Is modularity necessary when using a tapered stem in revision total hip arthroplasty? CurrOrthopPract2014;25(2):143-6.
7.Woodard E. Stiffness comparison of REDAPT Locking screws and non-locking screws utilized with the REDAPT variable angle locking feature. Smith & Nephew 2015. 04743 V1 12/15.
8.Latimer HA, LachiewiczPF. Porous-coated acetabular components with screw fixation. Five to ten-year results.” J Bone Joint SurgAm1996;78(7):975-81.
9.ClohisyJC, Harris WH. The Harris-Galanteporous-coated acetabular component with screw fixation. An average ten-year follow-up study. J Bone Joint SurgAm1999;81(1):66-73.
10.Goldstein et al. “Mechanical Locking Strength of Acetabular Shells with Threaded Screw Holes”. AAOS 2005.
11.PilliarRM, Lee JM, ManiatopoulosCDDS. Observations on the effect of movement on bone ingrowth into porous-surfaced implants. ClinOrthopRelatRes1986;208:108-13.
12.Milne LP, Kop AM, KusterMS. Polyaxiallockingand compression screws improve construct stiffness of acetabular cup fixation: a biomechanical study. J Arthroplasty2014;29(5):1043–51.
13. Mallory TH. The anterolateral surgical approach. In: Bono JV, McCarthy JC, Thornhill TS, Bierhaum BE, Turner RH (eds). Revision Total Hip Arthroplasty. New York: Springer; 1999.

Femoral

Stability without compromise1-12

The REDAPT Revision femoral System encloses 2 types of revision stems. A sleeveless and a sleeved option, both available in standard and high offset.

Stability

  • The REDAPT Femoral System is designed to achieve joint stability through independent adjustment of neck angle, height, offset, and version.

  • REDAPT is a 3° tapered titanium stem with proprietary ROCKTITE distal flutes designed for stable diaphyseal fixation through major and minor splines.
    ROCKTITE is a patented multi-level flute geometry designed to provide axial & rotational stability.

  • The combination of patented ROCKTITE flutes and a 3° taper angle minimizes the potential for subsidence.13-15

Rocktite Fixation image

Adaptabiliy

  • The adaptable nature of the REDAPT Sleeved Stem is designed to allow the surgeon to address proximal-distal mismatch of the femur.
  • REDAPT Sleeves are available in 4 sizes. Combined with the sleeveless stem, this provides 5 options which are designed to address metaphyseal defects to provide proximal support and implant stability.

Reproducibility

  • The REDAPT stem features an anterior-posterior chamfer that allows a long straight stem to be inserted. The chamfer is designed to skirt the anterior cortex, similar to a bowed stem, to allow a consistent and reproducible* surgical technique for any stem length.
  • REDAPT instruments are designed to maximize surgical efficiency and reproducibility* of implant position during the procedure.

 

*Final implant position reproduces trial position

 

Resources

Learn how nonmodular stems may provide improved value compared to modular stems

Evidence in Focus - Gabor

Evidence in Focus - Clair Study

Nonmodular Stems are a Viable Alternative to Modular Stems in Revision Total Hip Arthroplasty

 

References
1.Khan M, OsagieL, Raja S, SarmahS, BostromM, Haddad F. Modular distally fixed stems provide a stable revision solution for extensive bone loss. Paper presented at: British Hip Society 2013.
2.Tsai S, AldingerP. Subsidence analysis of the MDF hip stem. Internal testing. Smith & Nephew 2008. OR-08-168.
3.HofheinzE. Paproskytakeson Berendoverstem modularity [Internet]. Orthopedics This Week, 2013. Accessed: 10 Apr 2017. Available from: www.ryortho.com.
4.BaktirA, KaraaslanF, GencerK, KaraogluS. Femoral revision using the Wagner SL revision stem: a single-surgeon experience featuring 11-19 years of follow-up. J Arthroplasty 2015;30(5):827-834.
5.REDAPT Instructions for use. On file.
6.Schwartz AJ, SpangehlMJ, Beauchamp CP. Is modularity necessary when using a tapered stem in revision total hip arthroplasty? CurrOrthopPract2014;25(2):143-6.
7.Woodard E. Stiffness comparison of REDAPT Locking screws and non-locking screws utilized with the REDAPT variable angle locking feature. Smith & Nephew 2015. 04743 V1 12/15.
8.Latimer HA, LachiewiczPF. Porous-coated acetabular components with screw fixation. Five to ten-year results.” J Bone Joint SurgAm1996;78(7):975-81.
9.ClohisyJC, Harris WH. The Harris-Galanteporous-coated acetabular component with screw fixation. An average ten-year follow-up study. J Bone Joint SurgAm1999;81(1):66-73.
10.Goldstein et al. “Mechanical Locking Strength of Acetabular Shells with Threaded Screw Holes”. AAOS 2005.
11.PilliarRM, Lee JM, ManiatopoulosCDDS. Observations on the effect of movement on bone ingrowth into porous-surfaced implants. ClinOrthopRelatRes1986;208:108-13.
12.Milne LP, Kop AM, KusterMS. Polyaxiallockingand compression screws improve construct stiffness of acetabular cup fixation: a biomechanical study. J Arthroplasty2014;29(5):1043–51.
13. Smith + Nephew 2008. Orthopaedic Research Report OR-08-168.
14. Gabor J, Padilla J, Feng J, et al. Short-term outcomes with the REDAPT monolithic, tapered, fluted, grit-blasted, forged titanium revision femoral stem. Bone Joint J. 2020;102-b(2):191-197.
15. Khan M, Osagie L, Raja S, Sarmah S, Bostrom M, Haddad F. Modular distally fixed stems provide a stable revision solution for extensive bone loss. Poster presented at: British Hip Society Annual Scientific Meeting; Bristol, UK. February 27-March 2013.



Acetabular

Stability without compromise1-12

The REDAPT Revision Acetabular System encloses 2 types of Revision Shells as well as 3 types of Acetabular Augments.

The Revision Shells are developed for use in revision cases where compromised bone makes implant fixation and stability more difficult. The REDAPT Fully Porous Shell accommodates cemented liners whereas the REDAPT Modular Shell is made for direct anchored liners. In addition REDAPT Acetabular Augments are available where bone voids exist that may not be able to be addressed solely through placement of an acetabular shell. Augments aid in the restoration of the native hip center, where using a cup alone might produce a high hip center.13-15

To allow ingrowth, an additive manufacturing process is used to produce an entirely porous implant that is intended to mimic the structure of cancellous bone.16 Additionally, variable-angle locking screws can be used. Compared to conventional screws, REDAPT Variable Angle Locking Screws have demonstrated enhanced rigidity*, which can increase the initial stability of the construct.12,17-19

Stability

  • Screws have historically been used as a means to provide adjunctive fixation. Spherical head screws or REDAPT Variable Angle Locking Screws can be used in any of the available screw holes on the REDAPT Acetabular System
  • The high friction surface of the CONCELOC™ Advanced Porous Titanium is designed to aid in achieving the initial stability needed to hold the implant in place upon insertion.20-21

Adaptability

  • Shell: Optimized screw hole pattern depending on cup size with peripheral locking options in ischium & pubis.
  • Cemented and snap in liners available
  • Dual mobility option for complex primary and revision THA cases
  • Augments: Three styles are available to address varying defects (Staple, Slice and Blade)

Reproducibility

  • Threaded Apex Hole: Designed to simplify technique through compatibility with standard shell impactor instrumentation.
  • Threaded Apex Hole: Designed to provide consistent joint stability assessment using a range of screw-in trial liners. Note: Applicable to the Fully Porous Cup only
  • Cement ports to simplifies unitization of augments to the acetabular shell and allow for positioning of the implants prior to unitizing the construct with cement

 

*As demonstrated in benchtop testing

References
1.Khan M, OsagieL, Raja S, SarmahS, BostromM, Haddad F. Modular distally fixed stems provide a stable revision solution for extensive bone loss. Paper presented at: British Hip Society 2013.
2.Tsai S, AldingerP. Subsidence analysis of the MDF hip stem. Internal testing. Smith & Nephew 2008. OR-08-168.
3.HofheinzE. Paproskytakeson Berendoverstem modularity [Internet]. Orthopedics This Week, 2013. Accessed: 10 Apr 2017. Available from: www.ryortho.com.
4.BaktirA, KaraaslanF, GencerK, KaraogluS. Femoral revision using the Wagner SL revision stem: a single-surgeon experience featuring 11-19 years of follow-up. J Arthroplasty 2015;30(5):827-834.
5.REDAPT Instructions for use. On file.
6.Schwartz AJ, SpangehlMJ, Beauchamp CP. Is modularity necessary when using a tapered stem in revision total hip arthroplasty? CurrOrthopPract2014;25(2):143-6.
7.Woodard E. Stiffness comparison of REDAPT Locking screws and non-locking screws utilized with the REDAPT variable angle locking feature. Smith & Nephew 2015. 04743 V1 12/15.8.Latimer HA, LachiewiczPF. Porous-coated acetabular components with screw fixation. Five to ten-year results.” J Bone Joint SurgAm1996;78(7):975-81.
9.ClohisyJC, Harris WH. The Harris-Galanteporous-coated acetabular component with screw fixation. An average ten-year follow-up study. J Bone Joint SurgAm1999;81(1):66-73.
10.Goldstein et al. “Mechanical Locking Strength of Acetabular Shells with Threaded Screw Holes”. AAOS 2005.
11.PilliarRM, Lee JM, ManiatopoulosCDDS. Observations on the effect of movement on bone ingrowth into porous-surfaced implants. ClinOrthopRelatRes1986;208:108-13.
12.Milne LP, Kop AM, KusterMS. Polyaxial locking and compression screws improve construct stiffness of acetabular cup fixation: a biomechanical study. J Arthroplasty2014;29(5):1043–51.
13. Park B, Liporace F, Marwin S. Managing Acetabular Defects in Total Hip Arthroplasty. Bull Hosp Jt Dis (2013). 2017;75(1):37-46.
14. Nehme A, Lewallen D, Hanssen A. Modular porous metal augments for treatment of severe acetabular bone loss during revision hip arthroplasty. Clin Orthop Relat Res. 2004(429):201-208.
15. Siegmeth A, Duncan C, Masri B, Kim W, Garbuz D. Modular tantalum augments for acetabular defects in revision hip arthroplasty. Clin Orthop Relat Res. 2009;467(1):199-205.
16. Smith+Nephew 2017. Technical Memo TM-17-031.
17. Smith+Nephew 2015. Technical Memo TM-15-043.
18. Paprosky W, O'Rourke M, Sporer S. The treatment of acetabular bone defects with an associated pelvic discontinuity. Clin Orthop Relat Res. 2005;441:216-220.
19. Wong M, Leung F, Chow S. Treatment of distal femoral fractures in the elderly using a less-invasive plating technique. Int Orthop. 2005;29(2):117-120.
20. Smith+Nephew 2016. Orthopaedic Research Report OR-16-008
21. Smith+Nephew 2017. Technical Memo TM-17-081.

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This information is intended for health care professionals only.

*The decision to use Smith+Nephew products should be made by a healthcare professional, in line with applicable local protocols.  Smith+Nephew products should always be used for the indications set out in the applicable instructions for use.