The Open Orthopaedics Journal


ISSN: 1874-3250 ― Volume 11, 2017

Comparison of Post-Operative Muscular Strength Between Gamma Nailing and Hemiarthroplasty System in Femoral Intertrochanteric Fractures



Mitsuaki Noda1, *, Yasuhiro Saegusa1, Masayasu Takahashi1, Chisa Noguchi1, Chihiro Yoshikawa1, Hiroshi Mikami2, Akira Gotouda2
1 Konan Hospital, Department of Orthopedics, Kobe, Japan
2 Yoshinogawa Medical Center, Department of Rehabilitation, Yoshinogawa city, Japan

Abstract

Background:

The current study focuses on the comparison of postoperative muscular strength around the hip joint of patients with femoral intertrochanteric fractures treated either by cephalo-medullary (CM) nailing or a new bipolar hip prosthesis (BHP), an especially attached device to secure displaced greater trochanteric fragment.

Methods:

Twenty patients treated with CM nailing were age- and sex- matched with a control group of 20 patients treated with BHP. Maximum isometric forces at the bilateral hip joint were measured during the follow up period. Means of 3 measurements were represented.

Results:

The mean and standard deviation values (kg) of muscle strength at the non-operative/ operative side in the CM nailing group were as follows: flexion strength 9.5±4.7/8.5±4.9 (P=0.06), extension strength 6.2±3.5/5.5±3.7 (P=0.08), abduction strength at 0 degrees 7.7±3.5/6.2±2.8 (p=0.002), abduction strength at 10 degrees 5.5±2.0/4.2±2.0 (p=0.001). In the BHP group, mean and standard deviation values of muscle strength at the non-operative/ operative side were as follows: flexion strength 6.5±2.8/6.0±3.4 (P=0.08), extension strength 4.4±0.9/4.4±0.6 (P=0.83), abduction strength at 0 degrees 5.1±1.9/5.0±1.6 (p=0.12), and that at 10 degrees 4.7±1.4/4.6±1.3 (p=0.10).

Conclusion:

Our results demonstrate that CM nailing may cause a 25-30% decrease in postoperative muscle strength around the hip joint, particularly during hip abduction. With the new BHP, greater trochanter reduction is achieved allowing early weight bearing and maintaining strength in abduction. Surgeons should consider postoperative muscular strength as one of the necessary factors for selection of the appropriate surgical procedure.

Level of Evidence:

Therapeutic Level III.

Keywords: Bipolar hip prosthesis, Cephalo medullary nailing, Comparative study, Femoral intertrochanteric fracture, Gluteus medius, Muscle strength.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
First Page: 255
Last Page: 262
Publisher Id: TOORTHJ-11-255
DOI: 10.2174/1874325001711010255

Article History:

Received Date: 03/02/2017
Revision Received Date: 25/02/2017
Acceptance Date: 27/02/2017
Electronic publication date: 31/03/2017
Collection year: 2017

© 2017 Noda et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at Konan Hospital, Department of Orthopedics, 1-5-16 Kamokogahara, Higashinada Ward, Kobe City, 658-0064, Japan, Tel: 81-78-851-2161; Fax: 81-78-821-0962; E-mail: m-noda@muf.biglobe.ne.jp


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