The Short and “Shorter” of It: &gt;1750 Tapered Titanium Stems at 6- to 88-Month Follow-Up

Barrington, John W.; Emerson, Roger H.

doi:10.1016/j.arth.2013.07.032

Cited by 11 publications

(9 citation statements)

References 23 publications

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“…5,7,[12][13][14][15][16][17][18] To our knowledge, only four other authors have presented data on the Biomet Microplasty implant. 6,8,9,19 Barrington and Emerson 8 provide a cohort study of regular length taperloc implants compared to the microplasty implant. In his microplasty implant group (n ¼ 901), he states survivorship is 99% at 7 years.…”

Section: Discussionmentioning

confidence: 99%

“…Barrington and Emerson 8 provide a cohort study of regular length taperloc implants compared to the microplasty implant. In his microplasty implant group ( n = 901), he states survivorship is 99% at 7 years.…”

Section: Discussionmentioning

confidence: 99%

“…This can produce significantly better bone integration and less bone resorption. 7 Other studies suggest excellent survivorship 8,9 and lower complication rates with this implant. 6 The 'regular' taperloc implant is an uncemented implant produced by Biomet first introduced in 1983.…”

Section: Introductionmentioning

confidence: 87%

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Independent assessment and outcomes of 196 short-tapered stems short-term follow-up and review of the literature

Nahas

Patel

Blucher

et al. 2018

J Orthop Surg (Hong Kong)

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Background: Longer term outcome data are now becoming available for short-tapered femoral stems for cementless total hip arthroplasty. The shorter stem has a metaphyseal fit, loading the bone in this area, leading to physiological bone remodelling. It is also bone preserving, as it is 35 mm shorter. It may be easier to insert through a smaller incision and potentially reduce complication rates. We present a retrospective single surgeon case series of 196 patients (>53% follow-up over 5 years). All patients had the cementless 'Microplasty Taperloc' (Biomet). Primary outcome measures were femoral component revision rates. Secondary outcome measures included complications, patient-reported functional outcome scores (Oxford hip) and radiographic evidence of loosening. Methods: Patients were identified using electronic software. All were routinely followed up and assessed in clinic since implant introduction in 2009. Oxford hip scores were routinely obtained. A surgeon who had not carried out the procedure independently assessed radiographs. Results: One hundred ninety-six patients were identified. The revision rate was 0.5% due to an intraoperative periprosthetic fracture of the femur identified on post-operative radiograph. The complication rate was 2%, attributable to: subsidence of the prosthesis (one hip), post-operative dislocation (two hips), one of which required acetabular revision. Oxford hip scores increased on average from 21 to 45 (pre-to post-operatively). There were no signs of radiographic loosening. Conclusion: The results show that using the short-tapered stem is proving so far to be a reliable and safe alternative to its longer counterpart, with low complication rates in the short term.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Independent assessment and outcomes of 196 short-tapered stems short-term follow-up and review of the literature

Nahas

Patel

Blucher

et al. 2018

J Orthop Surg (Hong Kong)

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“…Schilcher et al performed a prospective comparison trial of the Taperloc standard stem and the Taperloc Microplasty stem and reported no difference in Harris Hip Score and survival in both groups. 26 In addition, Schilcher et al reported that no statistically significant difference was observed in stem migration and fixation in the standard stem and the Microplasty stem according to radiostereometric analysis on measurements up to 2 years postoperatively. 27 As such, even with the Microplasty stem with a reduced stem length of 35 mm, with appropriate application, initial/mechanical fixation equivalent to standard length stem can be anticipated.…”

Section: Stem Size and Neck Variationmentioning

confidence: 98%

Clinical results of a short stem with flat tapered wedge design in primary total hip arthroplasty for hip dysplasia in Asians

Hayama

Otani

Fujii

et al. 2020

J Orthop Surg (Hong Kong)

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Background: Cementless femoral reconstruction is challenging in hip dysplasia due to deformity of the proximal femur causing insufficient stem fixation and/or inadequate neck anteversion. Strategies to address these problems include the use of a modular stem or a distal fixation stem, but both stems have some characteristic disadvantages. Methods: We studied the postoperative clinical outcomes in primary total hip arthroplasty in 257 hips using the flat tapered wedge short femoral stem for hip dysplasia in an Asian population (postoperative follow-up period: 2 years to 6 years and 11 months; mean 4 years and 5 months). We took advantage of the characteristic of high flexibility in stem placement because of its low volume, positioning it while performing some varus/valgus and rotational alignment adjustments. Results: Favorable clinical functional outcomes were obtained, including the radiographic outcome of biological fixation achieved in all stems. Regarding complications, there was no case of split fracture of the femoral calcar region during stem insertion, and the rate of postoperative dislocation was also low at 0.4% (1 case). In the pre- and postoperative computed tomography measurements, the variability in stem anteversion postoperatively was significantly reduced compared to preoperative anatomical anteversion. Conclusion: This flat-shaped short low-volume stem likely has high flexibility in positioning in cases of hip dysplasia and can be easily positioned to avoid fractures while still achieving secure fixation.

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“…Short tapered-wedge cementless stems have been associated with favourable short-term clinical outcomes. [2][3][4][5][6][7] In addition, short stems are suitable for minimally invasive procedures, as they can be inserted through a small incision, and mini-incision THA reportedly results in less blood loss and pain and a shorter hospital stay than standard-incision THA. 8,9 Nevertheless, some studies have reported that miniincision THA results in malalignment and poor fixation owing to the narrow surgical field.…”

Section: Introductionmentioning

confidence: 99%

Stem alignment with short tapered-wedge cementless stems affects bone mineral density continuously for at least 5 years after primary total hip arthroplasty

Masuda

Iwakiri²,

Ohta

et al. 2023

HIP International

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Aim: This study aimed to assess the relationship between the three-dimensional (3D) alignment of short tapered-wedge cementless stems and bone mineral density (BMD) changes in patients followed up for 5 years after total hip arthroplasty (THA). Methods: We retrospectively analysed the hips of 52 patients who underwent THA using short tapered-wedge cementless stems at our institution from 2013 to 2016 with complete 5-year follow-up data. We evaluated the relationship between stem alignment, measured using a 3D-templating software, and BMD changes in the 7 Gruen zones. Results: After 1 year, significant negative correlations between varus insertion and a decrease in BMD in zone 7 and between flexed insertion and decreases in BMD in zones 3 and 4 were noted. After 5 years, significant negative correlations between varus insertion and a decrease in BMD in zone 7 and between flexed insertion and decreases in BMD zones 2, 3, and 4 were observed. With increased amounts of varus/flexion stem alignment, the amount of BMD loss decreased. There was no correlation between anteverted stem insertion and changes in BMD levels. Conclusions: Our data showed that stem alignment affects BMD based on 5-year follow-up data after surgery. Careful observation is necessary, especially when using short tapered-wedge cementless stems, as stem alignment may affect changes in BMD levels more than 5 years after surgery.

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The Short and “Shorter” of It: >1750 Tapered Titanium Stems at 6- to 88-Month Follow-Up

Cited by 11 publications

References 23 publications

Independent assessment and outcomes of 196 short-tapered stems short-term follow-up and review of the literature

Independent assessment and outcomes of 196 short-tapered stems short-term follow-up and review of the literature

Clinical results of a short stem with flat tapered wedge design in primary total hip arthroplasty for hip dysplasia in Asians

Stem alignment with short tapered-wedge cementless stems affects bone mineral density continuously for at least 5 years after primary total hip arthroplasty

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