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https://www.readbyqxmd.com/read/28636468/do-ligamentum-teres-tears-portend-inferior-outcomes-in-patients-with-borderline-dysplasia-undergoing-hip-arthroscopic-surgery-a-match-controlled-study-with-a-minimum-2-year-follow-up
#1
Edwin O Chaharbakhshi, Itay Perets, Lyall Ashberg, Brian Mu, Christopher Lenkeit, Benjamin G Domb
BACKGROUND: Arthroscopic surgery in borderline dysplastic hips remains controversial, but the role of the ligamentum teres (LT) has not been studied in this setting. HYPOTHESIS: Borderline dysplastic patients with LT tears have worse short-term outcomes than those without LT tears. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were prospectively collected on patients who underwent arthroscopic surgery between February 2008 and April 2014...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28630736/abnormal-femoral-antetorsion-a-subtrochanteric-deformity
#2
Guy Waisbrod, Florian Schiebel, Martin Beck
Femoral rotational malalignment is associated with pain and functional disability and may be a contributing factor to hip impingement as well as to instability. In general, the deformity can be addressed surgically by rotational osteotomy. However, the anatomic location of the deformity is debated. The goal of the present study was to narrow down the anatomic site of deformity using the lesser trochanter (LT) as an additional landmark. One hundred and eight patients underwent computer tomography (CT)-based rotational analysis of their lower extremities...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28630728/parameters-for-assessment-of-the-inferior-acetabulum-morphology-in-300-adult-hips
#3
Munif A Hatem, Luiz A M da Cunha, João C M Abdo, Hal David Martin
The inferior acetabulum (IA) has been studied as a stabilizer of the hip in flexed positions with potential implications in femoroacetabular impingement and hip instability. However, there is a paucity of studies considering the normal morphology and parameters for assessment of the IA. The purpose of this study was to define parameters to assess the IA morphology and their normal range. Specifically, the objectives were to assess: (i) the width of the anterior horn (AH) and posterior horn (PH) of the acetabulum; (ii) the inclination of the articular surface of the AH angle (AHA) and PH angle (PHA) in the axial plane; (iii) the anterior opening angle of the IA and differences between genders...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28630717/arthroscopic-hip-preservation-surgery-practice-patterns-an-international-survey
#4
Kevin M Smith, Brayden J Gerrie, Patrick C McCulloch, Brian D Lewis, R Chad Mather, Geoffrey Van Thiel, Shane J Nho, Joshua D Harris
To design and conduct a survey analyzing pre-, intra- and post- hip arthroscopy practice patterns among hip arthroscopists worldwide. A 21-question, IRB-exempt, HIPAA-compliant, cross-sectional survey was conducted via email using SurveyMonkey to examine pre-operative evaluation, intra-operative techniques and post-operative management. The survey was administered internationally to 151 hip arthroscopists identified from publicly available sources. Seventy-five respondents completed the survey (151 ± 116 hip arthroscopy procedures per year; 8...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28629944/what-are-the-risk-factors-for-dislocation-in-primary-total-hip-arthroplasty-a-multicenter-case-control-study-of-128-unstable-and-438-stable-hips
#5
M H Fessy, S Putman, A Viste, R Isida, N Ramdane, A Ferreira, A Leglise, B Rubens-Duval, N Bonin, F Bonnomet, A Combes, S Boisgard, D Mainard, S Leclercq, H Migaud
INTRODUCTION: Dislocation after total hip arthroplasty (THA) is a leading reason for surgical revision. The risk factors for dislocation are controversial, particularly those related to the patient and to the surgical procedure itself. The differences in opinion on the impact of these factors stem from the fact they are often evaluated using retrospective studies or in limited patient populations. This led us to carry out a prospective case-control study on a large population to determine: 1) the risk factors for dislocation after THA, 2) the features of these dislocations, and 3) the contribution of patient-related factors and surgery-related factors...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28629942/can-a-target-zone-safer-than-lewinnek-s-safe-zone-be-defined-to-prevent-instability-of-total-hip-arthroplasties-case-control-study-of-56-dislocated-tha-and-93-matched-controls
#6
N Reina, S Putman, R Desmarchelier, E Sari Ali, P Chiron, M Ollivier, J Y Jenny, D Waast, C Mabit, E de Thomasson, C Schwartz, P Oger, L E Gayet, H Migaud, N Ramdane, M H Fessy
BACKGROUND: Various factors contribute to instability of total hip arthroplasty (THA), with implant orientation being a major contributor. We performed a case-control study with computed tomography (CT) data to determine whether 1) orientation contributes to THA instability and 2) a safer target zone for stability than Lewinnek's classic safe zone can be defined. MATERIAL AND METHODS: We included prospectively 363 cases of THA dislocation that occurred during the calendar 2013 year in 24 participating hospitals...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28620863/effect-of-ligamentum-teres-tear-on-the-development-of-joint-instability-and-articular-cartilage-damage-an-in-vivo-rabbit-study
#7
Jong Hun Baek, Young Soo Chun, Kee Hyung Rhyu, Wan Keun Yoon, Yoon Je Cho
The contribution of the ligamentum teres to the stabilization of the hip joint and the clinical influence of a compromised ligamentum teres are not well known. This study aimed to investigate joint stability and cartilage damage in a rabbit model by surgically inducing a complete ligamentum teres tear. Twenty adult New Zealand rabbits were used in this study. Rabbits were divided into complete ligamentum teres tear with capsulotomy (n = 9, group I) and capsulotomy only (n = 10, group II) groups. Unilateral surgery was performed on the left hip...
June 15, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28614289/mri-in-postreduction-evaluation-of-developmental-dysplasia-of-the-hip-our-experience
#8
Daniela Dibello, Luca Odoni, Federica Pederiva, Valentina Di Carlo
BACKGROUND: Developmental dysplasia of the hip (DDH) is one of the most common congenital defects in the newborn. When its severe form is not corrected, it is associated with long-term morbidity. Closed reduction with casting is the standard primary treatment and reduction is confirmed by magnetic resonance imaging (MRI). We reported our experience on the reliability of MRI in postreduction assessment of DDH. METHODS: All children who underwent closed reduction for Graf type IV DDH at our institution between September 2010 and June 2016 were retrospectively reviewed...
June 13, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28610477/lower-extremity-joint-coupling-variability-during-gait-in-young-adults-with-and-without-chronic-ankle-instability
#9
Thomas Lilley, Christopher C Herb, Joseph Hart, Jay Hertel
Chronic ankle instability (CAI) is a condition resulting from a lateral ankle sprain. Shank-rearfoot joint-coupling variability differences have been found in CAI patients; however, joint-coupling variability (VCV) of the ankle and proximal joints has not been explored. Our purpose was to analyse VCV in adults with and without CAI during gait. Four joint-coupling pairs were analysed: knee sagittal-ankle sagittal, knee sagittal-ankle frontal, hip frontal-ankle sagittal and hip frontal-ankle frontal. Twenty-seven adults participated (CAI:n = 13, Control:n = 14)...
June 13, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28606460/dual-mobility-vs-fixed-bearing-total-hip-arthroplasty-in-patients-under-55-years-of-age-a-single-institution-matched-cohort-analysis
#10
Fiachra E Rowan, Anthony J Salvatore, Jeffrey K Lange, Geoffrey H Westrich
BACKGROUND: Prosthetic dislocation of total hip arthroplasty (THA) is a common cause for revision surgery. Dual-mobility (DM) bearings were introduced to mitigate complications; however, their performance in younger patients is unknown. This study compared results of patients <55 years of age with DM vs fixed-bearing (FB) primary THA. METHODS: Our total joint registry was used to evaluate primary THA patients <55 years of age, and then, an age-matched comparative analysis was performed for 136 THAs using third-generation highly cross-linked polyethylene DM bearings and 136 THAs using FB from the same manufacturer with mean follow-up of 3...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28605235/effects-of-hip-strengthening-on-neuromuscular-control-hip-strength-and-self-reported-functional-deficits-in-individuals-with-chronic-ankle-instability
#11
Brent I Smith, Carrie L Docherty, Denice Curtis
CONTEXT: Deficits in ankle and hip strength and lower extremity postural control are associated with chronic ankle instability (CAI). Following strength training, muscle groups demonstrate increased strength. This change is partially credited to improved neuromuscular control and many studies have investigated ankle protocols for subjects with CAI. The effects of isolating hip musculature in strength training protocols in this population is not well understood. OBJECTIVE: Examine the effects of hip strengthening on clinical and self-reported outcomes in patients with CAI...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28599629/dose-dependent-effects-of-intravenous-methoxamine-infusion-during-hip-joint-replacement-surgery-on-postoperative-cognitive-dysfunction-and-blood-tnf-%C3%AE-level-in-elderly-patients-a-randomized-controlled-trial
#12
Shenghui Sun, Defeng Sun, Lin Yang, Jun Han, Ruochuan Liu, Lijie Wang
BACKGROUND: Postoperative cognitive dysfunction (POCD), common in elderly patients, is thought to be closely associated with intraoperative instability of hemodynamics and excessive excretion of tumor necrosis factor-α (TNF-α). Methoxamine is a blood-pressure increasing drug commonly used for maintaining intraoperative hemodynamics. Methoxamine potentially promotes TNF-α expression, leading to an increased risk of POCD. This study aimed to investigate the dose-dependent effect of methoxamine on the incidence of early POCD and blood TNF-α level...
June 9, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28595864/hip-strength-and-star-excursion-balance-test-deficits-of-patients-with-chronic-ankle-instability
#13
Ryan S McCann, Ian D Crossett, Masafumi Terada, Kyle B Kosik, Brenn A Bolding, Phillip A Gribble
OBJECTIVES: To examine isometric hip strength in those with and without CAI, and determine the degree of Star Excursion Balance Test (SEBT) variance explained by isometric hip strength. DESIGN: Single-blinded, cross-sectional, case-control study. METHODS: Thirty individuals with CAI, 29 lateral ankle sprain (LAS) copers, and 26 healthy controls participated. We assessed dynamic postural control with the SEBT anterior (SEBT-ANT), posteromedial (SEBT-PM), and posterolateral (SEBT-PL) reaches, and isometric hip extension (EXT), abduction (ABD) and external rotation (ER) strength with hand-held dynamometry...
May 25, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28580258/a-method-for-capsular-management-and-avoidance-of-iatrogenic-instability-minimally-invasive-capsulotomy-in-hip-arthroscopy
#14
Csaba Forster-Horvath, Benjamin G Domb, Lyall Ashberg, Richard F Herzog
Most surgeons create a T-shaped or interportal capsulotomy to ensure good visibility when performing hip arthroscopy. This entails transecting the iliofemoral ligament, which may or may not be repaired at the end of the procedure. Cases of iatrogenic hip instability and pain after hip arthroscopy suggest that the iliofemoral ligament plays a crucial role in the stability of the hip joint, and thus preservation should be a goal in hip arthroscopy. We describe a minimally invasive iliofemoral ligament-sparing capsulotomy, guided by the reflected head of the rectus tendon, that can be easily repaired after arthroscopic rim trimming, labral refixation, and offset correction...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28579262/contact-forces-in-the-tibiofemoral-joint-from-soft-tissue-tensions-implications-to-soft-tissue-balancing-in-total-knee-arthroplasty
#15
Matthias A Verstraete, Patrick A Meere, Gaia Salvadore, Jan Victor, Peter S Walker
Proper tension of the knee's soft tissue envelope is important during total knee arthroplasty; incorrect tensioning potentially leads to joint stiffness or instability. The latter remains an important trigger for revision surgery. The use of sensors quantifying the intra-articular loads, allows surgeons to assess the ligament tension at the time of surgery. However, realistic target values are missing. In the framework of this paper, eight non-arthritic cadaveric specimens were tested and the intra-articular loads transferred by the medial and lateral compartment were measured using custom sensor modules...
May 23, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28578096/total-hip-arthroplasty-revision-by-dual-mobility-acetabular-cup-cemented-in-a-metal-reinforcement-a-62-case-series-at-a-minimum-5-years-follow-up
#16
N Lebeau, M Bayle, R Belahouane, M Chelli, E Havet, B Brunschweiler, P Mertl
INTRODUCTION: Total hip arthroplasty (THA) requires bone reconstruction in case of severe acetabular injury, with risk of dislocation, especially postoperatively. Dual-mobility cups have proved effective in preventing dislocation in THA revision for instability, but their behavior when cemented in a metal reinforcement has been little studied. OBJECTIVES: The present study assessed results for a dual-mobility cup cemented in a metal reinforcement, in terms of aseptic loosening and postoperative instability...
May 31, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28573967/dual-mobility-total-hip-arthroplasty-in-hemiplegic-patients
#17
Ayman T Henawy, Ahmed Abdel Badie
INTRODUCTION: The rate of cerebrovascular insults is increasing, currently leaving many patients with difficulties to maintain their balance due to muscular weakness and/or poor central control. Those patients are at risk of dislocation when total hip arthroplasty (THA) is planned. Instability remains the most significant issue after primary THA especially in such groups of patients. The risk is more pronounced when other factors are added such as, older age, femoral neck fractures, avascular necrosis and/or hip osteoarthritis...
2017: SICOT-J
https://www.readbyqxmd.com/read/28553442/physical-and-clinical-evaluation-of-hip-spica-cast-applied-with-three-slab-technique-using-fibreglass-material
#18
K M Bitar, M E Ferdhany, E I Ashraf, A Saw
Introduction: Hip spica casting is an important component of treatment for developmental dysplasia of the hip (DDH) and popular treatment method for femur fractures in children. Breakage at the hip region is a relatively common problem of this cast. We have developed a three-slab technique of hip spica application using fibreglass as the cast material. The purpose of this review was to evaluate the physical durability of the spica cast and skin complications with its use. Methodology: A retrospective review of children with various conditions requiring hip spica immobilisation which was applied using our method...
November 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28537647/robotic-assisted-total-hip-arthroplasty-outcomes-at-minimum-two-year-follow-up
#19
Richard L Illgen, Brandon R Bukowski, Rasheed Abiola, Paul Anderson, Morad Chughtai, Anton Khlopas, Michael A Mont
BACKGROUND: Component malposition in total hip arthroplasty (THA) contributes to instability and early failure. Robotic-assisted total hip arthroplasty (rTHA) utilizes CT-based planning with haptically-guided bone preparation and implant insertion to optimize component position accuracy. This study compared acetabular component position and postoperative complications following manual THA (mTHA) with rTHA. MATERIALS AND METHODS: Consecutive primary THAs performed by one surgeon at three intervals were analyzed in this retrospective cohort study: the initial 100 consecutive manual THAs (mTHA) in clinical practice (year 2000), the last consecutive 100 mTHA before rTHA introduction (year 2011), and the first consecutive 100 rTHA (year 2012)...
May 24, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28537348/a-cadaver-study-to-evaluate-the-accuracy-of-a-new-3d-mini-optical-navigation-tool-for-total-hip-arthroplasty
#20
Jonathan M Vigdorchik, Michael B Cross, Eric A Bogner, Theodore T Miller, Jeffrey M Muir, Ran Schwarzkopf
BACKGROUND: Accurate measurement of acetabular cup position (CP), changes in leg length (LL), and offset (OS) are paramount in ensuring proper sizing and implantation of components during total hip arthroplasty (THA). LL/OS inaccuracies can cause low back pain, neurological deficits, and patient dissatisfaction, while inaccurate positioning of the acetabular cup can lead to instability, dislocation, and, ultimately, revision surgery. The objective of this study was to evaluate the accuracy of a mini-navigation tool in measuring CP and LL/OS differential during THA...
May 24, 2017: Surgical Technology International
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