Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty

BackgroundLimb length discrepancy (LLD) is one of the most common postoperative complications and can cause serious consequences. Poor recovery of femoral offset (OD) will result in weakness of the patient's external rotator muscles and affect the patient's postoperative function. The stud...

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Main Authors: Xing Chen, Shuxing Xing, Zhiyong Zhu, Huisheng Wang, Zhongshen Yu, Xizhuang Bai, Xi Li
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-03-01
Series:Frontiers in Surgery
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fsurg.2022.845364/full
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author Xing Chen
Shuxing Xing
Zhiyong Zhu
Huisheng Wang
Zhongshen Yu
Xizhuang Bai
Xi Li
author_facet Xing Chen
Shuxing Xing
Zhiyong Zhu
Huisheng Wang
Zhongshen Yu
Xizhuang Bai
Xi Li
author_sort Xing Chen
collection DOAJ
description BackgroundLimb length discrepancy (LLD) is one of the most common postoperative complications and can cause serious consequences. Poor recovery of femoral offset (OD) will result in weakness of the patient's external rotator muscles and affect the patient's postoperative function. The study is aimed to present a simple approach that compensates for the shortcomings of previous measuring devices and combines the advantages of different measuring devices to provide more accurate limb length and femoral offset restoration in total hip arthroplasty (THA).MethodsThis study was a prospective controlled trial involving 89 patients with THA. Group I (n = 44) was used for intraoperative measurement of THA with our self-designed horizontal calibrator. Group II (n = 45) was measured by a traditional freehand technique. The main outcome indicators were measured on the Neusoft PACS, including LLD, femoral offset deviation, and operative time. IBM SPSS 23.0 was used for data analysis.ResultsThe independent sample t-test was performed for all the data. The operative time, preoperative radiographic LLD, and OD of Group I and Group II had no statistical significance. Postoperative LLD of Group I and Group II were 2.5 ± 2.1 mm (range −5.7 to 8.3 mm) and 6.2 ± 4.3 mm (range −18.0 to 15.2 mm), and the independent sample t-test data of both (P < 0.001; 95% CI = −5.1, −2.2) showed statistical significance. In Group I, there were 38 THAs with LLD <5 mm, accounting for 86% and there were 44 THAs with LLD <10 mm, accounting for 100%. In Group II, there were 20 THAs with LLD <5 mm, accounting for 44%. There were 36 THAs with LLD <10 mm, covering for 80%. There was no significant difference in postoperative femoral offset and OD.ConclusionThe horizontal calibrator can provide more accurate limb length and femoral offset recovery in THA. It is a simple surgical technique that does not add additionally surgical costs and does not significantly increase operative time, providing a new solution for surgeons to resolve postoperative LLD and restore femoral offset.
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spelling doaj.art-bf85a1f59e8a4b28be704bafc8e69b8d2022-12-22T01:39:52ZengFrontiers Media S.A.Frontiers in Surgery2296-875X2022-03-01910.3389/fsurg.2022.845364845364Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip ArthroplastyXing Chen0Shuxing Xing1Zhiyong Zhu2Huisheng Wang3Zhongshen Yu4Xizhuang Bai5Xi Li6Department of Orthopedic Surgery, Chengdu Fifth People's Hospital, The Fifth People's Hospital of Chengdu University of TCM, Chengdu, ChinaDepartment of Orthopedic Surgery, Chengdu Fifth People's Hospital, The Fifth People's Hospital of Chengdu University of TCM, Chengdu, ChinaDepartment of Orthopedics and Sports Medicine and Joint Surgery, Liaoning Provincial People's Hospital, People's Hospital of China Medical University, Shenyang, ChinaDepartment of Orthopedics and Sports Medicine and Joint Surgery, Liaoning Provincial People's Hospital, People's Hospital of China Medical University, Shenyang, ChinaDepartment of Orthopedics and Sports Medicine and Joint Surgery, Liaoning Provincial People's Hospital, People's Hospital of China Medical University, Shenyang, ChinaDepartment of Orthopedics and Sports Medicine and Joint Surgery, Liaoning Provincial People's Hospital, People's Hospital of China Medical University, Shenyang, ChinaDepartment of Orthopedics and Sports Medicine and Joint Surgery, Liaoning Provincial People's Hospital, People's Hospital of China Medical University, Shenyang, ChinaBackgroundLimb length discrepancy (LLD) is one of the most common postoperative complications and can cause serious consequences. Poor recovery of femoral offset (OD) will result in weakness of the patient's external rotator muscles and affect the patient's postoperative function. The study is aimed to present a simple approach that compensates for the shortcomings of previous measuring devices and combines the advantages of different measuring devices to provide more accurate limb length and femoral offset restoration in total hip arthroplasty (THA).MethodsThis study was a prospective controlled trial involving 89 patients with THA. Group I (n = 44) was used for intraoperative measurement of THA with our self-designed horizontal calibrator. Group II (n = 45) was measured by a traditional freehand technique. The main outcome indicators were measured on the Neusoft PACS, including LLD, femoral offset deviation, and operative time. IBM SPSS 23.0 was used for data analysis.ResultsThe independent sample t-test was performed for all the data. The operative time, preoperative radiographic LLD, and OD of Group I and Group II had no statistical significance. Postoperative LLD of Group I and Group II were 2.5 ± 2.1 mm (range −5.7 to 8.3 mm) and 6.2 ± 4.3 mm (range −18.0 to 15.2 mm), and the independent sample t-test data of both (P < 0.001; 95% CI = −5.1, −2.2) showed statistical significance. In Group I, there were 38 THAs with LLD <5 mm, accounting for 86% and there were 44 THAs with LLD <10 mm, accounting for 100%. In Group II, there were 20 THAs with LLD <5 mm, accounting for 44%. There were 36 THAs with LLD <10 mm, covering for 80%. There was no significant difference in postoperative femoral offset and OD.ConclusionThe horizontal calibrator can provide more accurate limb length and femoral offset recovery in THA. It is a simple surgical technique that does not add additionally surgical costs and does not significantly increase operative time, providing a new solution for surgeons to resolve postoperative LLD and restore femoral offset.https://www.frontiersin.org/articles/10.3389/fsurg.2022.845364/fullhip arthroplastyleg length discrepancyoffsetintraoperativecalibrator
spellingShingle Xing Chen
Shuxing Xing
Zhiyong Zhu
Huisheng Wang
Zhongshen Yu
Xizhuang Bai
Xi Li
Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
Frontiers in Surgery
hip arthroplasty
leg length discrepancy
offset
intraoperative
calibrator
title Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
title_full Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
title_fullStr Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
title_full_unstemmed Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
title_short Accuracy of the Horizontal Calibrator in Correcting Leg Length and Restoring Femoral Offset in Total Hip Arthroplasty
title_sort accuracy of the horizontal calibrator in correcting leg length and restoring femoral offset in total hip arthroplasty
topic hip arthroplasty
leg length discrepancy
offset
intraoperative
calibrator
url https://www.frontiersin.org/articles/10.3389/fsurg.2022.845364/full
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