Abstract:
PURPOSE:To evaluate the influence of stem offset and neck shaft angles on the range of motion before component impingement (ROMCI) and bony impingement (ROMBI), and the types of impingement in total hip arthroplasty (THA). METHODS:Using the computed tomography data of 101 patients who underwent THA, three-dimensional dynamic motion analysis was performed using a modular implant (Kinectiv(®) stem) that enabled adjustment of offset and leg length independently. We defined offset as horizontal offset (HO) and leg length as vertical offset (VO), and measured the ROMCI and ROMBI in flexion (Flex), internal rotation (Int-R) and external rotation (Ext-R) with the configuration of each horizontal/vertical offset. RESULTS:We found that HO lengthening increased the ROMCI and ROMBI in Flex and Int-R by delaying bony impingement, although excessive lengthening had minimal effect. On the contrary, VO lengthening decreased the ROMCI and ROMBI in Flex and ROMCI in Int-R. As for Ext-R, VO lengthening had positive effects on the ROMCI and ROMBI, whereas lengthening of HO had negative effects on the ROMCI and ROMBI. CONCLUSIONS:We demonstrated that the appropriate long offset with a low shaft angle increased the ROM in Flex and Int-R, and a high neck shaft angle increased the ROM in Ext-R. We should use implants properly in accordance with the types of impingement for avoiding dislocations in THA.
journal_name
Int Orthopjournal_title
International orthopaedicsauthors
Shoji T,Yamasaki T,Izumi S,Hachisuka S,Ochi Mdoi
10.1007/s00264-015-2826-3subject
Has Abstractpub_date
2016-02-01 00:00:00pages
245-53issue
2eissn
0341-2695issn
1432-5195pii
10.1007/s00264-015-2826-3journal_volume
40pub_type
杂志文章abstract:PURPOSE:Degenerative cervical spondylolisthesis has received insufficient attention, in contrast to degenerative lumbar spondylolisthesis. In fact, degenerative cervical spondylolisthesis may be more common than previously thought. METHODS:In order to provide appropriate guidelines for the treatment of degenerative ce...
journal_title:International orthopaedics
pub_type: 杂志文章,评审
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abstract:PURPOSE:Kienböck's disease is an unusual pathology with unknown aetiology within the pediatric population. Several treatment options have been described in the literature; however, there are neither large series nor homogeneous studies that have clarified which treatment is best. The aim of this study was to describe f...
journal_title:International orthopaedics
pub_type: 杂志文章
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abstract::Computer-assisted surgery (CAS) in total knee arthroplasty (TKA) could be useful in reducing the overall blood loss. A prospective randomised study was performed with two groups of 50 patients each of whom were treated for knee arthritis. Patients of group A were treated by a conventional standard procedure, while for...
journal_title:International orthopaedics
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00264-008-0651-7
更新日期:2009-12-01 00:00:00
abstract:PURPOSE:The benefits of minimally invasive surgical techniques in total hip arthroplasty (THA) are well known, but concerns about applying those techniques in obese patients are controversial. We prospectively compared patients with increased body mass index (BMI ≥ 30) undergoing THA with normal weight patients. METHO...
journal_title:International orthopaedics
pub_type: 杂志文章,随机对照试验
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abstract:PURPOSE:To analyse the results of the Ponseti method in the treatment of non-idiopathic clubfeet and compare them with idiopathic clubfeet in a programme-based setting using a standardized protocol METHODS: We reviewed two groups of 782 children treated prospectively in our programme-based Clubfoot Clinic: group I comp...
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:1979-01-01 00:00:00
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journal_title:International orthopaedics
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更新日期:1985-01-01 00:00:00
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journal_title:International orthopaedics
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doi:10.1007/s002640050304
更新日期:1999-01-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:2021-01-09 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章,随机对照试验
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更新日期:2016-06-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2020-10-22 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00264-011-1249-z
更新日期:2011-07-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:1987-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-06-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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pub_type: 杂志文章,meta分析,评审
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journal_title:International orthopaedics
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更新日期:1997-01-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:1987-01-01 00:00:00
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journal_title:International orthopaedics
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更新日期:2012-02-01 00:00:00
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journal_title:International orthopaedics
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更新日期:1996-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-06-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:2016-05-01 00:00:00
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journal_title:International orthopaedics
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更新日期:2008-08-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章,评审
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更新日期:2010-12-01 00:00:00
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journal_title:International orthopaedics
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更新日期:2017-11-01 00:00:00
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journal_title:International orthopaedics
pub_type: 杂志文章
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更新日期:2012-06-01 00:00:00
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journal_title:International orthopaedics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1991-01-01 00:00:00