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https://www.readbyqxmd.com/read/29792206/is-the-cup-orientation-different-in-bilateral-total-hip-arthroplasty-with-right-handed-surgeons-using-posterolateral-approach
#1
Xinggui Song, Ming Ni, Heng Li, Xin Li, Xiang Li, Jun Fu, Jiying Chen
BACKGROUND: The impact of surgeon handedness on acetabular cup orientation in total hip arthroplasty (THA) is not well studied. The aim of our study is to investigate the difference of cup orientation in bilateral THA performed by right-handed surgeons using posterolateral approach and which cup could be fitter to Lewinneck's safe zone. METHODS: The study consisted of 498 patients that underwent bilateral THA by three right-handed surgeons in our hospital. Postoperative acetabular cup anteversion and abduction on an anteroposterior pelvic radiograph were measured by Orthoview software (Orthoview LLC, Jacksonville, Florida)...
May 23, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29783895/the-use-of-an-ossis-custom-3d-printed-tri-flanged-acetabular-implant-for-major-bone-loss-minimum-2-year-follow-up-short-title-ossis-custom-3d-printed-tri-flanged-acetabular-implant
#2
David C Kieser, Ramez Ailabouni, Sandra C J Kieser, Michael C Wyatt, Paul C Armour, Mark H Coates, Gary J Hooper
INTRODUCTION: Custom 3D-printed acetabular implants are a new technology used in hip surgery with ever-increasing frequency. They offer patient-specific implants to optimise filling of bone defects and implant-bone contact, without the need for excessive bone resection. METHODS: This is a retrospective cohort study of 46 consecutive patients who underwent an Ossis unilateral custom 3D-printed acetabular implant. Clinical (Oxford Hip Score OHS-60), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Harris Hip Score (HHS) and radiological (restoration of biomechanical hip centre, osteointegration, wear, heterotrophic ossification) results were assessed...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29781911/what-is-the-frequency-of-early-dissociation-of-bipolar-cups-and-what-factors-are-associated-with-dissociation
#3
Young-Kyun Lee, Chan Ho Park, Yong-Chan Ha, Kyung-Hoi Koo
BACKGROUND: Dissociation between a prosthetic cup and femoral head is a rare complication of bipolar hemiarthroplasty that usually occurs during closed reduction of a dislocated bipolar cup. The dissociation usually results in reoperation because closed reduction is challenging. To our knowledge, no study has reported on the frequency of bipolar cup-femoral head dissociation, and risk factors for dissociation are unknown. QUESTIONS/PURPOSES: The purposes of this study were (1) to evaluate the frequency of dissociation of prosthetic femoral heads from bipolar cups during manual reduction of a dislocated bipolar hemiarthroplasty; and (2) to explore in a preliminary fashion any prosthesis or patient factors that may be associated with dissociation...
May 17, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29781290/dual-mobility-bearings-for-patients-with-abductor-trochanteric-complex-%C3%A4-nsufficiency-dual-mobility-for-abductor-trochanteric-complex-%C3%A4-nsufficiency
#4
Vahit E Ozden, Goksel Dikmen, Burak Beksac, Remzi Tozun
INTRODUCTION: The purpose of this study was to summarise the performance of dual-mobility cup systems for revision total hip arthroplasty in patients with abductor-trochanteric complex deficiency. METHODS: We prospectively followed 17 patients (20 hips) with a mean age of 64.5 years (range 33-89 years) who underwent acetabular reconstruction with dual-mobility cups for aseptic loosening in 12 hips, infection treatment as second or single stage in 6 hips, and instability in 2 hips...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29776889/early-dislocation-in-primary-total-hip-arthroplasty-using-a-posterior-approach-with-repair-of-capsule-and-external-rotators
#5
A Hernández, J H Nuñez, I Mimendia, V Barro, L Azorin
OBJECTIVE: To determine the incidence of dislocation after primary total hip arthroplasty using a posterior approach with repair of capsule and transosseous external rotators. MATERIAL AND METHOD: Historical cohort study between January 2009 and December 2015 of all the cases of dislocation of primary total hip arthroplasty operated using a posterior approach with repair of capsule and transosseous external rotators. Demographic and clinical data concerning the patient, surgery and dislocation were collected and analyzed...
May 15, 2018: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/29774956/cement-interface-and-bone-stress-in-total-hip-arthroplasty-relationship-to-head-size
#6
Teresa Alonso-Rasgado, Jose F Del-Valle-Mojica, David Jimenez-Cruz, Colin G Bailey, Tim N Board
The use of larger prosthetic femoral heads in total hip arthroplasty (THA) has increased considerably in recent years in response to the need to improve joint stability and reduce risk of dislocation. However, data suggests larger femoral heads are associated with higher joint failure rates. For cemented implants, ensuring the continued integrity of the cement mantle is key to long term fixation. This paper describes an investigation into the effect of variation in femoral head size on stresses in the acetabular cement mantle and pelvic bone...
May 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29774222/asymmetrical-traumatic-bilateral-hip-dislocations-with-hemodynamic-instability-and-an-unstable-pelvic-ring-case-report-and-review-of-literature
#7
Kai Huang, Grey Giddins, Jian-Fang Zhang, Jian-Wei Lu, Jun-Ming Wan, Peng-Li Zhang, Shao-Yu Zhu
Simultaneous anterior and posterior traumatic dislocations of both hips are very rare. Only 33 cases have been previously reported in the English language literature. Although they were all due to high-energy injuries, they were hemodynamically stable and had a stable pelvic ring. We report a unique case of asymmetrical hip dislocations with an unstable pelvic ring and hemodynamic instability. A 40-year-old man was injured in a high-energy motor vehicle accident. He was hemodynamically unstable when he presented in the emergency department...
May 16, 2018: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29772949/lack-of-consensus-on-optimal-acetabular-cup-orientation-because-of-variation-in-assessment-methods-in-total-hip-arthroplasty-a-systematic-review
#8
Thom E Snijders, Koen Willemsen, Steven M van Gaalen, Rene M Castelein, Harrie Weinans, Arthur de Gast
INTRODUCTION: Dislocation is one of the main reasons for revision of total hip arthroplasty but dislocation rates have not changed in the past decades, compromising patients' well-being. Acetabular cup orientation plays a key role in implant stability and has been widely studied. This article investigates whether there is a consensus on optimal cup orientation, which is necessary when using a navigation system. METHODS: A systematic search of the literature in the PubMed, Embase and Cochrane databases was performed (March 2017) to identify articles that investigated the direct relationship between cup orientation and dislocation, including a thorough evaluation of postoperative cup orientation assessment methods...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29771397/long-term-wear-data-from-a-prospective-multicenter-study-of-second-generation-highly-cross-linked-polyethylene-inserts-in-total-hip-arthroplasty
#9
Peter M Bonutti, J Wesley Mesko, Rama Ramakrishnan
In a prospective multicenter trial on highly cross-linked polyethylene inserts in patients undergoing total hip arthroplasty, 118 patients consented to 10-year follow-up. Medium-term follow-up results showed low wear at 5 and 7 years after surgery. The current study focuses on long-term data at 10 years. Patients were followed up by either phone or office visit to collect long-term clinical data including Harris hip score and adverse events. There were 2 deaths and 2 revisions, 1 at 6.5 years for pelvic cyst and severe pain and another at 8...
May 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29761618/robot-assisted-total-hip-arthroplasty-clinical-outcomes-and-complication-rate
#10
Itay Perets, John P Walsh, Mary R Close, Brian H Mu, Leslie C Yuen, Benjamin G Domb
BACKGROUND: The purpose of this study was to report minimum 2-year outcomes and complications for robotic-arm-assisted total hip arthroplasty (THA). METHODS: Data were prospectively collected and retrospectively reviewed between June 2011 and April 2014. Inclusion criteria were primary robotic-arm-assisted THAs treating idiopathic osteoarthritis with ≥ 2-year follow-up. Demographics, operating time, complications, 2-year outcome scores and satisfaction, and subsequent surgeries were recorded...
May 15, 2018: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29761221/interest-of-short-implants-in-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-comparative-study-uncemented-short-vs-cemented-conventional-femoral-stems
#11
Mehdi Miladi, Benoît Villain, Nasser Mebtouche, Thierry Bégué, Jean-Charles Aurégan
PURPOSES: Osteonecrosis of the femoral head (ONFH) is a dramatic condition resulting in joint destruction in the late stages. Total hip arthroplasty allows function recovery with satisfactory implant survival. Recently, the use of uncemented short stems has been suggested to improve the conservation of bone stock. METHODS: We performed a retrospective study on 16 hip arthroplasties-11 patients-implanted for ONFH between 2008 and 2017. We aimed to compare the outcomes of the two types of arthroplasty-"uncemented short" vs "cemented conventional" femoral stem-in terms of pain (visual analogue scale), function (Harris Hip Score), and survival (radiography)...
May 15, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29759011/preservation-technique-of-the-piriformis-tendon-is-superior-to-reattachment-technique-in-terms-of-contiguity-and-muscle-atrophy-using-magnetic-resonance-imaging
#12
So Minokawa, Masatoshi Naito, Kei Shiramizu, Yoshinari Nakamura, Koichi Kinoshita, Tomohiko Minamikawa, Hajime Seo, Takuaki Yamamoto
PURPOSE: The preservation technique of the piriformis tendon during the posterolateral approach in total hip arthroplasty (THA) is reportedly superior to the reattachment technique in terms of dislocation. However, the long-term effects of preservation of the piriformis tendon during THA remain unknown. In this study, we evaluated the contiguity of the piriformis/conjoined tendon and atrophy of the piriformis/internal obturator muscle during a long-term postoperative follow-up using magnetic resonance imaging (MRI)...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29758582/-relevance-of-mri-after-closed-reduction-of-traumatic-hip-dislocation-in-children
#13
Christoph Mauritz Strüwind, Christian von Rüden, Andreas Thannheimer, Volker Bühren, Dorien Schneidmueller
BACKGROUND: Traumatic hip dislocation in children and adolescents is a rare entity that typically results from high-energy trauma. After closed joint reduction, further treatment depends on the specific pattern of the lesion as identified using cross sectional imaging. The aim of this retrospective analysis was to evaluate relevant side effects after traumatic hip dislocation in children and adolescents in order to examine the need for focused diagnostics. PATIENTS/MATERIAL AND METHODS: This retrospective analysis covered 8 adolescents under 18 years suffering isolated traumatic hip joint dislocation between 2001 and 2017...
May 14, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29756506/dislocation-rate-increases-with-bariatric-surgery-before-total-hip-arthroplasty
#14
Brian T Nickel, Mitchell R Klement, Colin Penrose, Cynthia L Green, Michael P Bolognesi, Thorsten M Seyler
INTRODUCTION: Annually in the USA, 113,000 patients with refractory obesity undergo bariatric surgery (BS), and a subset does so in order to lower body mass index to become a more desirable total hip arthroplasty (THA) candidate. This study aims to evaluate THA risk with and without bariatric surgery. METHODS: 12,160 patients were identified in a claim-based review of the entire Medicare database with ICD-9 codes to identify patients in three groups. Patients who underwent BS prior to THA (Group I: 1,545 experimental group) and two control groups that did not undergo BS but had either a body mass index >40 (Group II: 6,918 bariatric control) or <25 (Group III: 3,697 normal weight control)...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29756496/bilateral-total-hip-arthroplasty-one-stage-versus-two-stage-procedure
#15
Afshin Taheriazam, Gholamreza Mohseni, Ali A Esmailiejah, Farshad Safdari, Hashem Abrishamkarzadeh
BACKGROUND: Despite several studies, controversy has prevailed over the rate of complications following 1-stage and 2-stage bilateral total hip arthroplasty (THA). In the current study, we compare the complications and functional outcomes of 1-stage and 2-stage procedures. METHODS: One hundred and eighty patients (ASA class I or II) with bilateral hip osteoarthritis were assigned randomly to two equal groups. The two groups were matched in terms of age and sex. All of the surgeries were performed via the Hardinge approach using uncemented implants...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29756492/cementless-total-hip-arthroplasty-in-young-patients-under-the-age-of-30-a-minimum-10-year-follow-up
#16
Eun Ho Shin, Kyoung Ho Moon
PURPOSE: The purpose of this study was to evaluate the clinical and radiologic outcomes of young patients (under the age of 30) who received a total hip arthroplasty (THA) and in whom patients had been followed for more than 10 years. MATERIALS AND METHODS: This retrospective study was conducted for 51 hips (44 patients) that had undergone THA. The mean age for the index operation was 25.71 years, and the mean follow-up period was 13.7 years. Clinical outcomes were evaluated by Harris hip score (HHS), activity level, and complications...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29755607/risk-factors-for-the-development-of-nerve-palsy-following-primary-total-hip-arthroplasty
#17
Shunsuke Kawano, Motoki Sonohata, Masaru Kitajima, Masaaki Mawatari
Background: Nerve palsy following total hip arthroplasty (THA) is a complication that worsens the functional prognosis. The present study analyzed the risk factors of nerve palsy following THA. Methods: The subjects of this study included 6,123 cases in which primary THA was performed under spinal anesthesia with cementless implants used in the posterolateral approach. Results: Fourteen cases (0.22%) developed nerve palsy following THA, all of which involved palsy of the entire peroneal nerve region...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29754187/nationwide-multicenter-follow-up-cohort-study-of-hip-arthroplasties-performed-for-osteonecrosis-of-the-femoral-head
#18
Seneki Kobayashi, Toshikazu Kubo, Yukihide Iwamoto, Wakaba Fukushima, Nobuhiko Sugano
PURPOSE: To identify modifiable factors related to post-operative dislocation and reoperation in patients with osteonecrosis of the femoral head (ONFH) in a large cohort. METHODS: We studied 4995 hip arthroplasties: total hip arthroplasty (THA) was performed in 79% of patients; bipolar hemiarthroplasty (BP), 17%; total resurfacing arthroplasty (tRS), 3%; and hemi-resurfacing arthroplasty (hRS), 1%. A new type of BP (accounting for 49% of BPs) comprised a femoral component with a polished or smooth, small-diameter (approximately 10 mm) neck with a round or oval axial cut surface and no sharp corners...
May 12, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29752504/duration-of-immobilization-after-developmental-dysplasia-of-the-hip-and-open-reduction-surgery
#19
Khaled Emara, Mohamed Ahmed Al Kersh, Fahad Abdulazeez Hayyawi
BACKGROUND: There is no consensus about the duration of post-operative immobilization in the treatment of DDH (developmental dysplasia of hip). Our aim in this study is to compare between two post-operative immobilization protocols for patients undergoing open reduction. MATERIALS AND METHODS: Thirty-eight hips in 32 patients assigned to group A were immobilized in hip spica for four weeks followed by abduction brace application which was gradually weaned through the periods of several months and 29 hips in 24 patients assigned to group B immobilized in hip spica for 12 weeks without further bracing...
May 11, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29752503/correction-to-the-relationship-of-pelvic-incidence-to-post-operative-total-hip-arthroplasty-dislocation-in-patients-with-lumbar-fusion
#20
Philip J York, Alan W McGee, Chase S Dean, Justin E Hellwinkel, Christopher J Kleck, Michael R Dayton, Craig A Hogan
The original publication of this paper contain an error. The author name "Alan S. McGee Jr" is incorrect for it should have been "Alan W. McGee Jr".
May 11, 2018: International Orthopaedics
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