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Hip Anatomy

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https://www.readbyqxmd.com/read/28916885/geometric-analysis-and-clinical-outcome-of-two-cemented-stems-for-primary-total-hip-replacement-with-and-without-modular-necks
#1
Marcel Haversath, Christine Wendelborn, Marcus Jäger, Boris Schmidt, Wojciech Kowalczyk, Stefan Landgraeber
INTRODUCTION: Restoration of the physiological biomechanical principles of the hip is crucial in total hip replacement. The aim of this study was to compare an arthroplasty system with different offset options (a: Exeter(®)) with a dual-modular stem (b: Profemur Xm(®)). MATERIALS AND METHODS: A local and an inertial coordinate system were used to assist the description of the components' assembly in the prosthesis. A resection line of the femoral head in standard position was added to the arthroplasties and geometric parameters were measured...
September 15, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28904634/treatment-of-chronic-stable-slipped-capital-femoral-epiphysis-via-surgical-hip-dislocation-with-combined-osteochondroplasty-and-imhauser-osteotomy
#2
J B Erickson, W P Samora, K E Klingele
PURPOSE: Treatment of slipped capital femoral epiphysis (SCFE), including the modified Dunn procedure, restores anatomy with significant risk for avascular necrosis (AVN), if performed in the setting of moderate to severe, stable SCFE. The Imhauser osteotomy has been shown to be an effective way to correct residual deformity without the risk of AVN. We sought to evaluate the effectiveness and safety of a combined Imhauser osteotomy and osteochondroplasty, performed via a surgical hip dislocation approach for the acute and delayed treatment of stable SCFE...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28886823/update-on-anterior-cruciate-ligament-rupture-and-care-in-the-female-athlete
#3
REVIEW
Jeremy M Burnham, Vonda Wright
As female athlete sports participation has continued to increase, the rate of anterior cruciate ligament (ACL) rupture in female athletes has also increased. Individualized, patient-specific treatment is crucial to achieving optimal outcomes; ACL reconstruction must accurately restore native ACL anatomy and address any concomitant injury to secondary stabilizers. Rehabilitation programs should target hip, core, and trunk neuromuscular control; allow adequate time for graft ligamentization; and address the psychosocial needs of the athlete...
October 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/28859846/the-influence-of-the-hips-position-on-measurements-of-posterior-tilt-in-a-valgus-impacted-femoral-neck-fracture
#4
Sigurd Erik Hoelsbrekken, Filip C Dolatowski
INTRODUCTION: Lateral radiographs are important for the evaluation of Garden I and II femoral neck fractures. These fractures appear undisplaced in the anteroposterior view, but posterior tilt of the femoral head may still be present in the lateral view. The influence of posterior tilt is, however, debated, which could be caused by the use of non-standardized cross-table radiographs in the conflicting reports. The aim of this bone-model study was therefore to evaluate the influence of the hips position on measurements of posterior tilt...
August 26, 2017: Injury
https://www.readbyqxmd.com/read/28852351/rapid-prototyping-3d-model-in-treatment-of-pediatric-hip-dysplasia-a-case-report
#5
Andrew M Holt, Zbigniew Starosolski, J Herman Kan, Scott B Rosenfeld
BACKGROUND: Rapid prototyping is an emerging technology that integrates common medical imaging with specialized production mechanisms to create detailed anatomic replicas. 3D-printed models of musculoskeletal anatomy have already proven useful in orthopedics and their applications continue to expand. CASE DESCRIPTION: We present the case of a 10 year-old female with Down syndrome and left acetabular dysplasia and chronic hip instability who underwent periacetabular osteotomy...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28796685/using-an-elastic-band-device-after-a-severe-obstetric-pubic-symphyseal-separation-clinical-and-imaging-evaluation
#6
Jeremy Lasbleiz, François-Xavier Sevestre, Pierre-Yves Moquet
BACKGROUND: Severe separation of the pubic symphysis is a rare delivery complication. Facing this pathology, we decided to study a new elastic band device. METHOD: To evaluate the elastic band device, clinical (pain-rated) and imaging (magnetic resonance imaging and radiography) evaluations with and without the device were performed. The elastic band device is a European Conformity-certified medical device, which is made of neoprene straps, that reduces the mobility of the pelvis and the use of the internal rotator muscles...
September 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28777285/3d-modeling-of-lower-extremities-with-biplanar-radiographs-reliability-of-measures-on-subsequent-examinations
#7
David E Westberry, Ashley M Carpenter
BACKGROUND: Biplanar radiography with 3-dimensional (3D) modeling (EOS) provides a comprehensive assessment of lower limb alignment in an upright weight-bearing position with less radiation than conventional radiography. A study was performed to assess the consistency and reliability of 2 lower extremity 3D biplanar radiograph models created at least 1 year apart in a pediatric population. METHODS: All patients who had 2 lower extremity radiographic evaluations with EOS performed at visits a minimum of 1 year apart were reviewed...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28773112/corrosion-and-tribology-of-materials-used-in-a-novel-reverse-hip-replacement
#8
Linda Braddon, Zafer Termanini, Steven MacDonald, Jay Parvizi, Jay Lieberman, Victor Frankel, Joseph Zuckerman
Total hip arthroplasty has been utilized for the past 50 years as an effective treatment for degenerative, inflammatory and traumatic disorders of the hip. The design of these implants has generally followed the anatomy of the hip as a ball and socket joint with the femoral head representing the ball and the acetabulum representing the socket. We describe a novel hip arthroplasty design in which the "ball" is located on the acetabular side and the "socket" is located on the femoral side. The results of extensive biomechanical testing are described and document wear and corrosion characteristics that are at least equivalent to standard designs...
July 5, 2017: Materials
https://www.readbyqxmd.com/read/28741029/subtrochanteric-femoral-shortening-osteotomy-combined-with-cementless-total-hip-replacement-for-crowe-type-iv-developmental-dysplasia-a-retrospective-study
#9
Giuseppe Rollo, Giuseppe Solarino, Giovanni Vicenti, Girolamo Picca, Massimiliano Carrozzo, Biagio Moretti
BACKGROUND: Total hip replacement for high dislocation of the hip presents some difficulties, considering patients' young ages, the abnormal hip anatomy and the high rate of complications. In this study, we present our experience in terms of clinical and radiological results in the treatment of Crowe type IV hips with subtrochanteric femoral shortening osteotomy and cementless total hip replacement. MATERIALS AND METHODS: We retrospectively reviewed 15 patients with Crowe type IV hip dysplasia (two bilateral cases for a total of 17 hips) treated with cementless total hip replacement associated with shortening subtrochanteric osteotomies (nine transversal and eight Z-shape osteotomies) between March 2000 to February 2006...
July 24, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28731779/arthroscopic-labral-base-repair-in-the-hip-5-year-minimum-clinical-outcomes
#10
Benjamin G Domb, Leslie C Yuen, Victor Ortiz-Declet, Jody Litrenta, Itay Perets, Austin W Chen
BACKGROUND: Arthroscopic labral base repair (LBR) in the hip is a previously described technique designed to restore the native functional anatomy of the labrum by reproducing its seal against the femoral head. LBR has been shown to have good short-term outcomes. Hypothesis/Purpose: The purpose was to evaluate clinical outcomes of an LBR cohort with a minimum 5-year follow-up. It was hypothesized that patients who underwent LBR would continue to have significant improvement from their preoperative scores and maintain scores similar to their 2-year outcomes...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28719561/arterial-topographic-anatomy-near-the-femoral-head-neck-perforation-with-surgical-relevance
#11
Paulo Rego, Vasco Mascarenhas, Diego Collado, Ana Coelho, Luis Barbosa, Reinhold Ganz
BACKGROUND: Knowledge of the vascular supply of the femoral head is crucial for hip-preserving surgical procedures. The critical area for reshaping cam deformity is at the retinacular vessel penetration, an area with ill-defined topographic anatomy. We performed a cadaver study of the extension of the lateral retinaculum near the head-neck junction, distribution of the arterial vascular foramina, and initial intracapital course of these vessels. METHODS: In 16 fresh proximal parts of the femur without head-neck deformities, the deep branch of the medial femoral circumflex artery was injected with gadolinium for magnetic resonance imaging (MRI) sequences to identify arterial structures...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28676359/office-evaluation-of-pelvic-pain
#12
REVIEW
Stacey Bennis, Sarah Hwang
The history and physical examination are important keys to diagnosis and treatment of patients with chronic pelvic pain. The comprehensive history should include questioning regarding patient's pain complaint and a thorough history and review of any body system that may be involved, including neuromusculoskeletal, obstetric, gynecologic, gastrointestinal, urologic, dermatologic, infectious, oncologic, and psychiatric. The physical examination should also follow a focused systems-based approach and includes examination of gastrointestinal, dermatologic, neurologic, and musculoskeletal (including lumbosacral spine, sacroiliac joints, pelvis, and hips) systems, and the pelvic floor (internal and external examination, including neuromuscular anatomy)...
August 2017: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/28676358/anatomy-and-physiology-of-the-pelvic-floor
#13
REVIEW
Sarah M Eickmeyer
Understanding the anatomic relationship of the pelvic floor muscles with the pelvic girdle, spine, and hips aids the rehabilitation provider in diagnosis, management, and appropriate referrals. The bony anatomy of the pelvic girdle consists of 3 bones and 3 joints. The pelvic floor muscles are comprised mainly of the levator ani muscles with somatic innervation from the lumbosacral plexus. The bony and muscular pelvis is highly interconnected to the hip and gluteal musculature, which together provide support to the internal organs and core muscles...
August 2017: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/28641973/changes-in-hip-knee-and-ankle-coronal-alignments-after-total-hip-arthroplasty-with-transverse-femoral-shortening-osteotomy-for-unilateral-crowe-type-iv-developmental-dysplasia-of-the-hip
#14
Ahmet Kocabiyik, Abdulhamit Misir, Turan B Kizkapan, Kadir I Yildiz, Mehmet A Kaygusuz, Yakup Alpay, Atakan Ezici
BACKGROUND: To investigate changes in lower extremity coronal alignment in patients with unilateral Crowe type IV developmental dysplasia of the hip who underwent total hip arthroplasty with transverse femoral shortening osteotomy. METHODS: We reviewed the preoperative and 1-year postoperative full-length lower extremity radiographs of 25 patients. Femoral offset (FO), mechanical hip-knee-ankle angle, anatomical axis, mechanical axis deviation (MAD), mechanical lateral proximal femoral angle, anatomical medial proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle, knee joint line congruency angle, mechanical medial proximal tibial angle, mechanical lateral distal tibial angle, ankle joint line orientation angle, tibial plafond talus angle, extremity length, and pelvic obliquity were measured on both the operative and nonoperative sides...
June 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28630734/open-treatment-of-dysplasia-other-than-pao-does-it-have-to-be-a-pao
#15
REVIEW
Kotaro R Shibata, Shuichi Matsuda, Marc R Safran
Hip dysplasia is a developmental disorder that results in anatomic abnormalities in which the acetabular coverage is insufficient. In the absence of severe degenerative changes, younger active patients with these symptomatic structural abnormalities are increasingly managed with joint-preserving operations. Historically there have been numerous reconstructive pelvic osteotomies. In recent years, the Bernese periacetabular osteotomy (PAO) has become the preferred osteotomy by many surgeons. Even so, as our understanding of the hip advances and new diagnostic and treatment techniques are developed, we sought to put a focus on the long-term results of augmental osteotomies and pelvic osteotomies other than the PAO, to see if any of these surgeries still have a place in the current algorithm of treatment for the dysplastic hip...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28618097/accuracy-of-navigated-cam-resection-in-femoroacetabular-impingement-a-randomised-controlled-trial
#16
Jan Van Houcke, Vikas Khanduja, Naoki Nakano, Peter Krekel, Christophe Pattyn, Emmanuel Audenaert
BACKGROUND: The main cause for revision hip arthroscopy surgery is incomplete bony resection of femoroacetabular impingement (FAI). This study aimed to compare the cam resection accuracy via the conventional hip arthroscopy technique with the navigation technique. METHODS: Two prospectively randomized groups were recruited: navigated (n = 15) and conventional (n = 14). A pre-operative CT and post-operative MRI scan were obtained in all cases to compare alpha angle, range of motion simulation and determine a pre-operative 3D surgical resection plan...
June 15, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28598491/modularity-in-total-hip-arthroplasty-benefits-risks-mechanisms-diagnosis-and-management
#17
Ben M Vierra, Sarah R Blumenthal, Derek F Amanatullah
Modular implants are currently widely used in total hip arthroplasty because they give surgeons versatility during the operation, allow for easier revision surgery, and can be adjusted to better fit the anatomy of the specific patient. However, modular implants, specifically those that have metal-on-metal junctions, are susceptible to crevice and fretting corrosion. This can ultimately cause implant failure, inflammation, and adverse local tissue reaction, among other possible side effects. Surgeons should be aware of the possibility of implant corrosion and should follow a set of recommended guidelines to systematically diagnose and treat patients with corroded implants...
June 9, 2017: Orthopedics
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
#18
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/28573372/a-survey-of-anatomical-items-relevant-to-the-practice-of-rheumatology-pelvis-lower-extremity-and-gait
#19
Cristina Hernández-Díaz, José Alvarez-Nemegyei, José Eduardo Navarro-Zarza, Pablo Villaseñor-Ovies, Robert A Kalish, Juan J Canoso, Angélica Vargas, Karla Chiapas-Gasca, Joseph J Biundo, Francisco Javier de Toro Santos, Dennis McGonagle, Simon Carette, Miguel Ángel Saavedra
This study aimed to generate a minimum list of structural and functional anatomical items about the pelvis/hip, knee, ankle/foot, gait, and lower limb innervation, which are most relevant to the practice of rheumatology. To determine their perceived relevance to clinical practice, seven members of the Mexican Clinical Anatomy Task Force compiled an initial list of 470 anatomical items. Ten local and international experts according to a 0-10 Likert scale ranked these items. Of the original list, 101 (21.48%) items were considered relevant (global rate >40)...
June 1, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28566407/pelvic-reconstruction-following-resection-of-malignant-bone-tumours-using-a-stemmed-acetabular-pedestal-cup
#20
C Hipfl, C Stihsen, S E Puchner, A Kaider, M Dominkus, P T Funovics, R Windhager
AIMS: Pelvic reconstruction after the resection of a tumour around the acetabulum is a challenging procedure due to the complex anatomy and biomechanics. Several pelvic endoprostheses have been introduced, but the rates of complication remain high. Our aim was to review the use of a stemmed acetabular pedestal cup in the management of these patients. PATIENTS AND METHODS: The study involved 48 patients who underwent periacetabular reconstruction using a stemmed pedestal cup (Schoellner cup; Zimmer Biomet Inc...
June 2017: Bone & Joint Journal
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