scholarly journals A novel intra-operative technique to achieve accurate leg length and femoral offset during total hip replacement

2012 ◽  
Vol 94 (4) ◽  
pp. 281-282
Author(s):  
S Alazzawi ◽  
SL Douglas ◽  
FS Haddad
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Operative Technique ◽  
Leg Length ◽  
Femoral Offset ◽  
Total Hip

Radiographic Assessment of Biomechanical Parameters following hip Resurfacing and Cemented Total Hip Arthroplasty

2009 ◽  
Vol 19 (3) ◽  
pp. 251-256 ◽  
Author(s):  
Curtis Robb ◽  
Richard Harris ◽  
Kevin O'dwyer ◽  
Nadim Aslam
Keyword(s):  
Total Hip Replacement ◽  
Hip Arthroplasty ◽  
Hip Replacement ◽  
Hip Resurfacing ◽  
Leg Length ◽  
Femoral Offset ◽  
Normal Side ◽  
Total Hip ◽  
Significant Difference ◽  
Joint Reaction Forces

Resurfacing hip arthroplasty and total hip replacement both aim to restore anatomical parameters. Leg length and offset discrepancy can result in altered joint reaction forces, and are associated with increased wear, dislocation, and decreased patient satisfaction. This study assesses the accuracy of leg length and offset restoration after either a Birmingham Hip Resurfacing (BHR) or a cemented total hip replacement (THR). Standardised antero-posterior radiography was performed on two groups of 30 patients with unilateral primary osteoarthritis undergoing either a cemented total hip or resurfacing. The normal contra-lateral hip was used as the control. Leg length and offset were measured pre-operatively with no significant difference between the two groups. Cup offset, femoral offset, total offset and leg length of the prosthesis and normal side were measured by two observers and mean measurements were analysed by a paired t test. Leg lengths in each group did not differ significantly from the normal side, THR 0.53 mm (95% CI -2.4 to 3.4 mm) but BHR implantation did result in mean leg shortening of -1.9 mm (95% CI -4.5 mm to 0.6 mm). Cup offset differed significantly from normal anatomy in both groups, as did femoral and total offset for the total hip replacement group. However, femoral offset was restored in the Birmingham resurfacing group. When the THR group was compared against the BHR group we found no difference between restoration of leg lengths (p = 0.21) and cup offset (p = 0.30) but femoral (p = 0.0063) and total offset (p = 0.03) were restored more accurately with a BHR.

scholarly journals Total hip replacement: increasing femoral offset improves functional outcome

2016 ◽  
Vol 136 (9) ◽  
pp. 1317-1323 ◽  
Author(s):  
N. D. Clement ◽  
R. S. Patrick-Patel ◽  
D. MacDonald ◽  
S. J. Breusch
Keyword(s):  
Functional Outcome ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Femoral Offset ◽  
Total Hip

A new method for intraoperative assessment of leg length, sizing and placement of the components in total hip replacement

2020 ◽  
Vol 30 (4) ◽  
pp. 689-694
Author(s):  
Ioannis P. Stathopoulos ◽  
Nicolaos Andrianopoulos ◽  
Dimitrios Paschaloglou ◽  
Kalliopi Lampropoulou-Adamidou ◽  
Maria Spetsaki ◽  
...  
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
New Method ◽  
Leg Length ◽  
Total Hip ◽  
Intraoperative Assessment

Accuracy of femoral templating in reproducing anatomical femoral offset in total hip replacement

2007 ◽  
Vol 17 (3) ◽  
pp. 155-159 ◽  
Author(s):  
H. Davies ◽  
J. Foote ◽  
Robert F. Spencer
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Femoral Offset ◽  
Total Hip

scholarly journals Process optimized minimally invasive total hip replacement

2012 ◽  
Vol 3 (2) ◽  
pp. 3 ◽  
Author(s):  
Philipp Gebel ◽  
Markus Oszwald ◽  
Bernd Ishaque ◽  
Gaffar Ahmed ◽  
Recha Blessing ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Direct Anterior Approach ◽  
Operation Technique ◽  
Complication Rates ◽  
Leg Length ◽  
Total Hip ◽  
The Mean ◽  
Mean Time

The purpose of this study was to analyse a new concept of using the the minimally invasive direct anterior approach (DAA) in total hip replacement (THR) in combination with the leg positioner (Rotex- Table) and a modified retractor system (Condor). We evaluated retrospectively the first 100 primary THR operated with the new concept between 2009 and 2010, regarding operation data, radiological and clinical outcome (HOOS). All surgeries were perfomed in a standardized operation technique including navigation. The average age of the patients was 68 years (37 to 92 years), with a mean BMI of 26.5 (17 to 43). The mean time of surgery was 80 min. (55 to 130 min). The blood loss showed an average of 511.5 mL (200 to 1000 mL). No intra-operative complications occurred. The postoperative complication rate was 6%. The HOOS increased from 43 points pre-operatively to 90 (max 100 points) 3 months after surgery. The radiological analysis showed an average cup inclination of 43° and a leg length discrepancy in a range of +/- 5 mm in 99%. The presented technique led to excellent clinic results, showed low complication rates and allowed correct implant positions although manpower was saved.

scholarly journals Assessing Reproducibility for Radiographic Measurement of Leg Length Inequality after Total Hip Replacement

2012 ◽  
Vol 22 (5) ◽  
pp. 539-544 ◽  
Author(s):  
Anthony B. McWilliams ◽  
Andrew J. Grainger ◽  
Philip J. O'Connor ◽  
Anthony C. Redmond ◽  
Todd D. Stewart ◽  
...  
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Radiographic Measurement ◽  
Leg Length ◽  
Leg Length Inequality ◽  
Total Hip

Leg Length Equality in Total Hip Replacement

Orthopedics ◽  
1990 ◽  
Vol 13 (1) ◽  
pp. 15-15
Author(s):  
Robert D'Ambrosia
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Leg Length ◽  
Total Hip

Accuracy of Femoral Templating in Reproducing Anatomical Femoral Offset in Total Hip Replacement

2007 ◽  
Vol 17 (3) ◽  
pp. 155-159 ◽  
Author(s):  
H. Davies ◽  
J. Foote ◽  
R.F. Spencer
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Rank Order ◽  
Computer Software ◽  
X Rays ◽  
Femoral Offset ◽  
Total Hip ◽  
Crucial Component ◽  
Best Fitting ◽  
The Uk

Restoration of hip biomechanics is a crucial component of successful total hip replacement. Preoperative templating is recommended to ensure that the size and orientation of implants is optimised. We studied how closely natural femoral offset could be reproduced using the manufacturers' templates for 10 femoral stems in common use in the UK. A series of 23 consecutive preoperative radiographs from patients who had undergone unilateral total hip replacement for unilateral osteoarthritis of the hip was employed. The change in offset between the templated position of the best-fitting template and the anatomical centre of the hip was measured. The templates were then ranked according to their ability to reproduce the normal anatomical offset. The most accurate was the CPS-Plus (Root Mean Square Error 2.0 mm) followed in rank order by: C stem (2.16), CPT (2.40), Exeter (3.23), Stanmore (3.28), Charnley (3.65), Corail (3.72), ABG II (4.30), Furlong HAC (5.08) and Furlong modular (7.14). A similar pattern of results was achieved when the standard error of variability of offset was analysed. We observed a wide variation in the ability of the femoral prosthesis templates to reproduce normal femoral offset. This variation was independent of the seniority of the observer. The templates of modern polished tapered stems with high modularity were best able to reproduce femoral offset. The current move towards digitisation of X-rays may offer manufacturers an opportunity to improve template designs in certain instances, and to develop appropriate computer software.

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