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. 2022 Nov;46(11):2553-2560.
doi: 10.1007/s00264-022-05538-3. Epub 2022 Aug 23.

Greater trochanter fixed with a claw plate and cable system in complex primary and revision total hip arthroplasty: long-term follow-up

Jing Tang #  1 , Tiemure Wu #  1 , Hongyi Shao  1 , Yixin Zhou  2
Affiliations

Greater trochanter fixed with a claw plate and cable system in complex primary and revision total hip arthroplasty: long-term follow-up

Jing Tang et al. Int Orthop. 2022 Nov.

Abstract

Background: Maintaining continuity of the greater trochanter and restoring abductor function are of paramount importance in primary and revision total hip arthroplasty. Failure to rigidly fix the greater trochanter can lead to failure. Because of the lack of reports on the clinical results of greater trochanter fixation with a claw plate and cable system, we aimed to analyze the indications for the use of such a system that produces the best clinical results.

Methods: We retrospectively studied 41 consecutive patients who had undergone primary or revision total hip arthroplasty at our institution between January 2004 and December 2014 using a claw plate and cable system to achieve stable fixation of the greater trochanter.

Results: The mean follow-up duration was ten years. The median Harris hip score improved from 47 points before surgery to 87 points after surgery (p < 0.01). Significant improvements were observed in the range of motion, hip function, and routine activity. Osseous and fibrous union occurred in all patients, and one patient had severe complications (sciatica). Based on the Beals and Tower classification, 67%, 21%, and 13% of outcomes were considered excellent, good, and poor, respectively.

Conclusions: Our data support the use of a claw plate and cable system for greater trochanter fixation in complex primary and revision hip arthroplasty. The system showed promising results in patients with floating greater trochanters, intertrochanteric fractures requiring extra devices to maintain rotational stability, and extended trochanteric osteotomy fragments with a weakened proximodistal junction. The use of this system should be further investigated and compared to other methods.

Keywords: Cable; Claw plate; Hip; Total hip arthroplasty; Trochanter.

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