Significantly Reduced Leg Length Discrepancy and Increased Femoral Offset by Application of a Head–Neck Adapter in Revision Total Hip Arthroplasty

Abstract Head–neck adapters in total hip arthroplasty (THA) promise the reconstruction of optimal femoral offset and leg length in revision THA while retaining stable implants. Radiological parameters after adapter implantation in THA revision were determined in 37 cases. Significant reduction of le...

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Bibliographic Details
Published in:The Journal of arthroplasty 2014-06, Vol.29 (6), p.1301-1307
Main Authors: Woelfle, Julia V., MD, Fraitzl, Christian R., MD, Reichel, Heiko, MD, Wernerus, Dirk, MD
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip - instrumentation
dislocation rate
Female
femoral offset
Femur - diagnostic imaging
Femur - surgery
head–neck adapter
Hip Prosthesis
Humans
leg length discrepancy
Leg Length Inequality - diagnostic imaging
Leg Length Inequality - surgery
Male
Middle Aged
Orthopedics
Prosthesis Failure
Radiography
Reoperation - instrumentation
revision THA
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Summary:Abstract Head–neck adapters in total hip arthroplasty (THA) promise the reconstruction of optimal femoral offset and leg length in revision THA while retaining stable implants. Radiological parameters after adapter implantation in THA revision were determined in 37 cases. Significant reduction of leg length discrepancy and improvement of femoral offset ( P < 0.001) were found. Clinical endpoints were determined in 20 cases (mean follow-up 4.0 years). Clinical scores were rather poor (median Harris hip score 54, WOMAC score 41) due to age and comorbidities, postoperative dislocation occurred in 3 cases. Only one stable femoral stem had to be revised due to recurrent postoperative dislocation. In conclusion, a head–neck adapter can be a valuable tool in certain cases of revision THA with acceptable dislocation rates while allowing the retention of stable implants.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2013.11.028