Short stem hip arthroplasty via the minimally invasive direct anterior approach

2021 ◽  
Author(s):  
Boris Michael Holzapfel ◽  
Dominik Rak ◽  
Stefan Kreuzer ◽  
Joerg Arnholdt ◽  
Martin Thaler ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Hip Arthroplasty ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Short Stem

scholarly journals 5-Year Clinical and Radiographic Results of the Direct Anterior Approach for Total Hip Arthroplasty Using a Collared Cementless Femoral Short-Stem Prosthesis

2022 ◽  
Vol 11 (2) ◽  
pp. 346
Author(s):  
Ali Darwich ◽  
Kim Pankert ◽  
Andreas Ottersbach ◽  
Marcel Betsch ◽  
Sascha Gravius ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Clinical Outcome ◽  
Hip Arthroplasty ◽  
Anterior Approach ◽  
Hip Osteoarthritis ◽  
Direct Anterior Approach ◽  
Short Stem ◽  
Total Hip ◽  
The Mean

The aim of this study was to investigate the radiological and clinical outcome of the direct anterior approach (DAA) in total hip arthroplasty (THA) using a collared cementless femoral short-stem. This retrospective study included 124 patients with 135 THAs operated from 2014 to 2016 using a collared cementless triple tapered hydroxyapatite-coated femoral short-stem (AMIStem H Collared®, Medacta International, Castel San Pietro, Switzerland) implanted with a DAA. Follow-up was performed at three months, 12 months, and five years. Clinical outcome was assessed using the hip osteoarthritis outcome score (HOOS) and radiological analysis was done using conventional radiographs, which included evaluation of the femur morphology based on Dorr classification, of radiolucencies based on the Gruen zone classification and of stem subsidence. The mean age was 67.7 ± 11.3 years and the mean body mass index (BMI) was 27.4 ± 4.4 kg/m2. The stem survival rate at five years was 99.1% with one revision due to recurrent dislocations. Mean HOOS score improved from 40.9 ± 18.3 preoperatively to 81.5 ± 19.7 at three months, 89.3 ± 10.9 at 12 months, and 89.0 ± 14.0 at five years (all with p < 0.001). No significant correlations were found between age, femoral bone morphology, BMI and HOOS, and the appearance of relevant radiolucencies.

The Accuracy and Ability of Preoperative Templating to Restore Femoral Offset in Calcar-Guided Short-Stem Total Hip Prosthesis through Direct Anterior Approach

2021 ◽  
Author(s):  
Barbara Favier ◽  
Nathalie van Beek ◽  
Mike Tengrootenhuysen
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Short Stem ◽  
Size Difference ◽  
Femoral Offset ◽  
Stem Size ◽  
Total Hip ◽  
Preoperative Templating

AbstractThe aim of this study was to assess the applicability and ability of preoperative templating to restore femoral offset and hip length with a calcar-guided short-stem implant design in total hip arthroplasty through the direct anterior approach. Preoperative measurements were performed of femoral offset, hip length, and stem size and compared with the perioperative placed prosthesis in 100 patients undergoing primary total hip replacement through direct anterior approach. Additionally, the pre- and postoperative femoral offset and hip length were compared to evaluate the ability to restore the offset and hip length with this kind of femoral short stem. With an acceptance of 1 size difference pre- and postoperatively, a 94% accuracy of predicting the size of the calcar-guided short stem was achieved with templating. Femoral offset was within means of 5 mm in 82.2% of the patients. Postoperative hip length was within 6 mm in 90% of the patients compared with the preoperative length.The use of preoperative templating for total hip arthroplasty with calcar-guided short-stem implants was proven to be a useful tool to predict the definite implanted size of the femoral prosthesis. Our results show that this new stem design does not significantly differ from previous reported outcomes with other stem designs and is competent to restore the femoral offset and hip length within clinical acceptable range. Level of evidence Level 3 retrospective case study.

scholarly journals Imaging Analysis of Prosthesis Angle after Hip Replacement with Direct Anterior Approach in Lateral Position

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Daojian Zhang ◽  
Liping Pan ◽  
Talatibaike Maimaitijuma ◽  
Heng Liu ◽  
Hao Wu
Keyword(s):  
Total Hip Arthroplasty ◽  
Minimally Invasive ◽  
Hip Arthroplasty ◽  
Anterior Approach ◽  
Invasive Procedure ◽  
Direct Anterior Approach ◽  
Surgical Instruments ◽  
Rapid Recovery ◽  
Nerve Tissue ◽  
Total Hip

The use of lateral DAA-THA for the treatment of end-stage hip disorders has good recent clinical efficacy, does not require special surgical beds and traction equipment, uses traditional surgical instruments, reduces the requirements for surgical beds and surgical instruments, enters through the nerve and muscle anatomical gap without cutting any muscle or nerve tissue, is minimally invasive, and has good surgical maneuverability, low bleeding, low postoperative pain, short hospitalization time, and rapid recovery. It is a safe and effective minimally invasive procedure because of its light weight, short hospital stay, and rapid recovery. In this paper, we used imaging to observe the angle of the posterior prosthesis. And the results showed that hip arthroplasty using the direct anterior approach improved hip mobility in early stages compared with other approaches and reduced pain. The direct anterior approach and length between total hip arthroplasty using direct lateral and posterior lateral approach and partial data (surgical time, blood loss, etc.) were significantly worse than those using direct forward approach. In addition, the direct anterior approach to total hip arthroplasty is subject to a learning curve and requires at least 33 cases of experience to achieve a lower complication rate.

scholarly journals A single-surgeon experience in reconstruction of femoro-acetabular offset and implant positioning in direct anterior approach and anterolateral MIS approach with a curved short stem

2021 ◽  
Author(s):  
Matthias Luger ◽  
Rainer Hochgatterer ◽  
Matthias C. Klotz ◽  
Jakob Allerstorfer ◽  
Tobias Gotterbarm ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Short Stem ◽  
Leg Length ◽  
Implant Positioning ◽  
Significant Difference ◽  
Surgeon Experience ◽  
Group A ◽  
Group B

Abstract Purpose Minimally invasive surgery using short stems in total hip arthroplasty gained more popularity. The differences in change of hip offset and implant positioning in minimally invasive approaches are not fully known. Therefore, this study was conducted to evaluate the difference in reconstruction of hip offset and implant positioning in direct anterior approach (DAA) and minimally invasive anterolateral approach (AL MIS). Methods A single surgeon series of 117 hips (117 patients; mean age 65.54 years ± 11.47; index surgery 2014–2018) were included and allocated into two groups: group A (DAA) with 70 hips and Group B (AL MIS) with 47 patients operated. In both groups the same type of cementless curved short hip stem and press fit cup was used. Results Both groups showed an equal statistically significant increase of femoral (p < 0.001) and decrease of acetabular offset (p < 0.001). Between both groups no statistically significant difference in offset reconstruction, leg length difference or implant positioning could be found. Leg length increased in both groups significantly and leg length discrepancy showed no difference (group A: − 0.06 mm; group B: 1.11 mm; p < 0.001). A comparable number of cups were positioned outside the target zone regarding cup anteversion. Conclusion The usage of a curved short stem shows an equal reconstruction of femoro-acetabular offset, leg length and implant positioning in both MIS approaches. The results of this study show comparable results to the existing literature regarding change of offset and restoration of leg length. Malposition of the acetabular component regarding anteversion poses a risk.

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