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J Bone Joint Surg Am 2019 Mar;101(6):e21

Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri.

Background: Appropriate patient-reported outcome measures are paramount to determine the clinical relevance of change experienced by patients after a surgical procedure. The purpose of this study was to evaluate the psychometric properties of 3 patient-reported outcome measures (Hip disability and Osteoarthritis Outcome Score [HOOS], modified Harris hip score, and Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC]) in a large population of patients treated with periacetabular osteotomy for symptomatic developmental dysplasia of the hip.

Methods: Patients who underwent a periacetabular osteotomy for acetabular dysplasia between October 2011 and October 2016 completed multiple questionnaires preoperatively and at the 1-year follow-up. Read More

J Bone Joint Surg Am 2019 Mar;101(6):547-556

Department of Orthopaedic Surgery (D.E.G., S.P.R., D.E.A., M.P.B., and T.M.S.), Department of Anesthesiology (T.J.H.), and Performance Services (C.B.H.), Duke University Medical Center, Durham, North Carolina.

Background: A reliable prediction tool for 90-day adverse events not only would provide patients with valuable estimates of their individual risk perioperatively, but would also give health-care systems a method to enable them to anticipate and potentially mitigate postoperative complications. Predictive accuracy, however, has been challenging to achieve. We hypothesized that a broad range of patient and procedure characteristics could adequately predict 90-day readmission after total joint arthroplasty (TJA). Read More

J Bone Joint Surg Am 2019 Mar;101(6):531-538

Department of Orthopedic Surgery, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, Beijing, China.

Background: To our knowledge, no previous studies have compared periprosthetic bone remodeling around monoblock versus modular tapered fluted titanium stems with different stem length and thickness.

Methods: A retrospective comparative study was performed on 139 consecutive total hip arthroplasties (THAs) revised with a tapered fluted modular titanium stem and 114 consecutive THAs revised with a tapered fluted monoblock titanium stem. The latest follow-up radiographs were compared with immediate postoperative radiographs to assess bone restoration in residual osteolytic areas, femoral stress-shielding, spot-welds, and radiolucent lines. Read More

J Bone Joint Surg Am 2019 Mar;101(6):486-493

Departments of Orthopedic Surgery (C.J.M., M.E.A., Y.J.K., Y.-M.Y., M.B.M., and B.E.H.) and Radiology (S.D.B.), Harvard Medical School and Boston Children's Hospital, Boston, Massachusetts.

Background: The etiology of hip pain in pediatric and adolescent patients can be unclear. Osteoid osteoma (OO) about the hip in children has only been described in case reports or small studies. The present study assessed the clinical presentation and diagnostic course, imaging, and treatment approaches in a large cohort of pediatric cases of OO about the hip. Read More

Physiother Res Int 2019 Mar 20:e1772. Epub 2019 Mar 20.

Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey.

Objective: The aim of the study was to investigate the relation between health-related quality of life and risk of falling, fear of falling, and functional status in patients with hip arthroplasty.

Methods: In this cross-sectional study, 48 hips of 45 patients who aged between 33 and 79 (53.56 ± 12. Read More

J Arthroplasty 2019 Feb 20. Epub 2019 Feb 20.

Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA.

Background: Orthopedic surgeons may overprescribe opioids postoperatively. Literature examining opioid prescribing guidelines following total joint arthroplasty (TJA) is limited.

Methods: Retrospective review was conducted of primary TJAs from June 2017 to February 2018, with 3-month follow-up. Read More

Mater Sci Eng C Mater Biol Appl 2019 Jun 19;99:1123-1132. Epub 2019 Feb 19.

Department of Orthopedics, Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Dalian, Liaoning, China; Department of Biomedical Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Linggong Road, Dalian, China. Electronic address:

Osteonecrosis of the femoral head (ONFH) results in collapse of the femoral head and rapid destruction of the hip joint. The repair of post-collapse articular cartilage and subchondral bone is challenging. We interrupted the blood supply to the femoral head and established a full-thickness articular defect animal model after ONFH was determined via X-ray. Read More

Med Sci Monit 2019 Mar 19;25:2049-2057. Epub 2019 Mar 19.

Department of Orthopedic Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China (mainland).

BACKGROUND The lesser trochanter (LT) posterior cortical extension (LTPE) fragment is important for joint stability during reconstruction in unstable pertrochanteric hip fractures. This study aimed to investigate the morphological characteristics of the LT fragments using three-dimensional computed tomography (3-D CT) reconstruction and to compare clinical outcomes in different subgroups of 31A2 fractures. MATERIAL AND METHODS A retrospective study included CT images of 58 cases of 31A2 type unstable pertrochanteric fractures, using the Arbeitsgemeinschaft für Osteosynthesefragen and Orthopedic Trauma Association (AO/OTA) classification. Read More

NPJ Microgravity 2019 14;5. Epub 2019 Mar 14.

18Division of Biomedical Research and Environmental Sciences, NASA Lyndon B. Johnson Space Center, Houston, TX USA.

Concerns raised at a 2010 Bone Summit held for National Aeronautics and Space Administration Johnson Space Center led experts in finite element (FE) modeling for hip fracture prediction to propose including hip load capacity in the standards for astronaut skeletal health. The current standards for bone are based upon areal bone mineral density (aBMD) measurements by dual X-ray absorptiometry (DXA) and an adaptation of aBMD cut-points for fragility fractures. Task Group members recommended (i) a minimum permissible outcome limit (POL) for post-mission hip bone load capacity, (ii) use of FE hip load capacity to further screen applicants to astronaut corps, (iii) a minimum pre-flight standard for a second long-duration mission, and (iv) a method for assessing which post-mission physical activities might increase an astronaut's risk for fracture after return. Read More

Eklem Hastalik Cerrahisi 2019 Apr;30(1):38-45

Department of Orthopedics and Traumatology, Bağcılar Training and Research Hospital, 34100 Bağcılar, İstanbul, Turkey.

Objectives: This study aims to describe our standardized method for evaluating the tension of reduction around the hip joint during open reduction in patients with developmental dysplasia of the hip (DDH).

Patients And Methods: We retrospectively evaluated 67 pediatric patients (8 males, 59 females; mean age 21.9±11. Read More

Eklem Hastalik Cerrahisi 2019 Apr;30(1)

Professor of Orthopedic Surgery, Turkish Joint Diseases Foundation, Ankara, Turkey.

Zhongguo Gu Shang 2019 Feb;32(2):141-145

Department of Orthopaedics, the Second Affiliated Hospital of Bengbu Medical College, Bengbu 233040, Anhui, China;

Objective: To investigate the short term clinical efficacy of direct anterior approach(DAA) total hip arthroplasty for the treatment of ankylosing spondylitis with hip flexion deformity.

Methods: From September 2014 to June 2017, 15 cases of ankylosing spondylitis with flexion deformity of the hip were treated with total hip arthroplasty through DAA approach including 12 males(17 hips) and 3 females(4 hips) with an average age of 34.4 years old ranging from 21 to 57 years old. Read More

JBJS Essent Surg Tech 2014 Dec 9;3(4):e19. Epub 2013 Oct 9.

School of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan. E-mail address:

Introduction: A combined procedure including open reduction, femoral shortening osteotomy, and an acetabular procedure is often necessary to obtain a desirable result in children of walking age who have a high-riding hip dislocation.

Step 1 Surgical Approach: A careful approach to the femoral head and acetabulum is required to avoid injury to nerves, vessels, and cartilage.

Step 2 Explore The Hip Joint: Make sure to find the true acetabulum and remove all obstacles to femoral head reduction. Read More

Integr Med (Encinitas) 2017 Apr;16(2):55-60

A 9-y-old boy with severe juvenile rheumatoid arthritis who had been recommended for bilateral hip replacement received treatment for more than 8 y from an interprofessional group of clinicians. The clinicians provided chiropractic, naturopathic, and acupuncture care, in addition to pediatrics, rheumatology, orthopedics, and physical therapy care. This process was not easy; the patient used crutches for 2 y during treatment and experienced severe pain secondary to multiple joint pathology. Read More

Magn Reson Med 2019 Mar 18. Epub 2019 Mar 18.

Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin.

Purpose: Due to host-mediated adverse reaction to metallic debris, there is an increasing need for noninvasive assessment of the soft tissue surrounding large joint arthroplasties. Quantitative mapping can be beneficial for tissue characterization and early diagnosis of tissue pathology but current mapping techniques lack the capability to image near metal hardware. A novel multi-spectral mapping technique is proposed to address this unmet need. Read More

J Anat 2019 Mar 18. Epub 2019 Mar 18.

Department of Anatomy, University of Otago, Dunedin, New Zealand.

The ligament of the head of femur (LHF), or ligamentum teres, is believed to provide blood supply to the head of femur and mechanical stability to the hip joint. But these functions in the adult are often debated. The existence and distribution of neurovascular structures within the ligament are not widely documented. Read More

JBJS Case Connect 2019 Mar 13. Epub 2019 Mar 13.

Department of Orthopaedic Surgery (A.Z.D., D.J.G., and N.P.S.), Perelman School of Medicine (J.M.B.), University of Pennsylvania (D.K.), Philadelphia, Pennsylvania.

Case: A 50-year-old man with a history of chronic refractory periprosthetic joint infection following total hip arthroplasty, which had been treated with multiple antibiotic spacers, developed an enteroarticular fistula. He was able to avoid hip disarticulation after undergoing a laparoscopic colectomy with a diverting colostomy and a functional hip resection arthroplasty. At the 1-year follow-up, he was walking independently with crutches and had minimal pain. Read More

Sports Biomech 2019 Mar 18:1-17. Epub 2019 Mar 18.

a College of Health, Biomechanics Laboratory , Ball State University , Muncie , IN , USA.

Landing research attempts to simulate sport activities; however, movements performed pre- or post-landing may alter landing mechanics and injury risk. Therefore, this study compared lower extremity biomechanics of single-leg drop landings, drop jump (DJ) and countermovement jump (CMJ) landings as well as sex-related differences. A total of 25 recreational athletes (11 females) performed landings from 80% maximum jump height with impact forces, kinematics and joint moments measured during each landing. Read More

JB JS Open Access 2018 Dec 23;3(4):e0026. Epub 2018 Oct 23.

Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Beijing, China.

Background: Multiple joint procedures during a single anesthetic episode have been proposed for patients with hemophilia as a way to reduce cost. The postoperative 90-day complication rate and the cost distribution between multiple joint procedures and single joint procedures for patients with hemophilia have not been well studied.

Methods: Between January 1996 and December 2016, 124 patients underwent 177 surgical procedures (total knee arthroplasty, total hip arthroplasty, and ankle arthrodesis) for the treatment of hemophilic end-stage arthropathy. Read More

Adv Orthop 2019 10;2019:4629503. Epub 2019 Feb 10.

Emory University Department of Orthopaedics, Atlanta, GA, USA.

Introduction: Historically, a majority of prosthetic joint infections (PJIs) grew Gram-positive bacteria. While previous studies stratified PJI risk with specific organisms by patient comorbidities, we compared infection rates and microbiologic characteristics of PJIs by hospital setting: a dedicated orthopaedic hospital versus a general hospital serving multiple surgical specialties.

Methods: A retrospective review of prospectively collected data on 11,842 consecutive primary hip and knee arthroplasty patients was performed. Read More

Indian J Med Microbiol 2018 Oct-Dec;36(4):475-487

Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.

Total joint arthroplasty (TJA) is one of the most common and reliable orthopaedic procedures that has significantly improved the quality of life of patients with degenerative joint diseases. Following the increase in the ageing population, availability of trained orthopaedic surgeons and advances in implantation procedures, demand for TJA both globally and in India is significantly increasing. Though TJA is one of the most cost-successful orthopaedic procedures, prosthetic joint infection (PJI) is one of the major complications of joint arthroplasty. Read More

J Arthroplasty 2019 Feb 15. Epub 2019 Feb 15.

Complex Joint Reconstruction Center, Hospital for Special Surgery, New York City, NY.

Background: Antibiotic cement spacers are used during 2-stage revision total hip arthroplasty for prosthetic joint infection. Complications including dislocation and periprosthetic fracture have been reported but a large cohort comparing spacer design features is lacking. We aimed to determine if spacer design is associated with perioperative complications. Read More

Gait Posture 2019 Mar 8;70:185-189. Epub 2019 Mar 8.

Faculty of Science and Engineering, Department of Mechanical Engineering, Laval University, Quebec, Canada. Electronic address:

Background: Toe-out foot positioning is increasingly analyzed as a compensatory body-mechanical strategy to reduce pain and joint constraints in people with degenerative joint disease during gait. However, its influence during functional tasks, such as sit-to-stand, has not been reported.

Research Question: How uni- and bilateral toe-out foot positioning influence body-dynamics during a STS task?

Methods: The study was conducted on 15 healthy participants. Read More

Gait Posture 2019 Mar 8;70:168-174. Epub 2019 Mar 8.

Utah Valley University, 800 W University Pkwy, Orem, UT, 84058, USA. Electronic address:

Background: The act of babywearing is recognizably a task of load carriage and has gained popularity among millennial caregivers.

Research Question: The implications of babywearing on lower extremity joint moments of the caregiver are still unknown during prolonged transport and a direct comparison of babywearing to carrying an infant in-arms has not been previously conducted.

Methods: Eighteen females participated in this study by performing 3 conditions: a) 3 min walking unloaded (UL), b) 15 min walking while carrying a mannequin infant in-arms (IA), and c) 15 min walking while wearing a mannequin infant in an anteriorly positioned baby carrier (BC). Read More

Arch Orthop Trauma Surg 2019 Mar 15. Epub 2019 Mar 15.

Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.

Introduction: This study aimed to (1) report the rates of resistance against a variety of antibiotics for pure Staphylococcal infections, and (2) examine the impact of ALBC use at primary surgery has on resistance patterns for patients undergoing first-time revision of primary hip and knee arthroplasty for indication of infection.

Materials And Methods: Data from the National Joint Registry database for England and Wales were linked to microbiology data held by Public Health England to identify a consecutive series of 258 primary hip and knee arthroplasties performed between April 2003 and January 2014 that went on to have a revision for Staphylococcal deep periprosthetic infection. Multivariate binary logistic regression was used to study predictors of microorganism resistance to a range of antimicrobials. Read More

Med Eng Phys 2019 Mar 12. Epub 2019 Mar 12.

Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK.

The head of femoral bone is deformed in the subjects with Leg Calve Perthes disease (LCPD). This may be due to the excessive loads applied on it. There are no studies that report the hip joint contact force in subjects with LCPD. Read More

J Biomech 2019 Feb 16. Epub 2019 Feb 16.

Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; NIHR Leeds Biomedical Research Centre, Leeds, UK; Arthritis Research UK Centre for Sports, Exercise and Osteoarthritis, Nottingham, Oxford, Loughborough, Leeds, UK. Electronic address:

To examine functional differences in total hip replacement patients (THR) when stratified either by age or by functional ability as defined by self-selected walking speed. THR patients and a control group underwent three-dimensional motion analysis under self-selected normal and fast walking conditions. Patients were stratified into five age groups for comparison with existing literature. Read More

Orv Hetil 2019 Mar;160(12):456-463

Szent-Györgyi Albert Klinikai Központ, Ortopédiai Klinika, Szegedi Tudományegyetem, Általános Orvostudományi Kar Szeged, Semmelweis u. 6., 6725.

Introduction: Tranexamic acid (TXA) is widely used during elective joint replacement to reduce blood loss and decrease the transfusion requirement.

Aim: This study assessed the efficacy of tranexamic acid in reducing minor bleeding complications following primary cemented total hip replacement, when rivaroxaban is used as thromboprophylaxis, the complicated wound healing effect of which has been published recently.

Method: Consecutive patients undergoing hip replacement were studied. Read More

Medicina (Kaunas) 2019 Mar 14;55(3). Epub 2019 Mar 14.

Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Inashiki-gun, Ibaraki 300-0394, Japan.

Background And Objectives: The Honda Walking Assistive device® (HWA) is a light and easywearable robot device for gait training, which assists patients' hip flexion and extension movementsto guide hip joint movements during gait. However, the safety and feasibility of robot-assisted gaittraining after total hip arthroplasty (THA) remains unclear. Thus, we aimed to evaluate the safetyand feasibility of this gait training intervention using HWA in a patient who underwent THA. Read More

J Med Eng Technol 2019 Mar 15:1-7. Epub 2019 Mar 15.

b MR Research Centre , University of Exeter , Exeter , UK.

A three-dimensional hip model was created from the MRI scans of one human subject based on constructing the entire pelvis and femur. The ball and socket joint was modelled between the hip's acetabulum and the femoral head to analyse the multiaxial loads applied in the hip joint. The three key ligaments that reinforce the external surface of the hip to help to stabilise the joint were also modelled which are the iliofemoral, the pubofemoral and ischiofemoral ligaments. Read More

Arch Orthop Trauma Surg 2019 Mar 14. Epub 2019 Mar 14.

College of Medicine, Northeast Ohio Medical University College of Medicine, 4209 St. Rt. 44, Rootstown, OH, 44272, USA.

Background: Total joint arthroplasty (TJA) is a major orthopedic procedure associated with substantial morbidity and mortality. Never events (NEs) are harmful hospital-acquired conditions (HACs) that are preventable.

Methods: Information on hospital admissions with TJA was collected from the National Inpatient Sample (NIS) from 2003 to 2012. Read More

ANZ J Surg 2019 Mar 14. Epub 2019 Mar 14.

Bathurst and Orange Orthopaedic Surgeons Association, Orange, New South Wales, Australia.

Background: The Birmingham Hip Resurfacing (BHR) system (Smith and Nephew) was developed as an alternative to conventional total joint replacement for younger, more active patients. Among other complications exists the risk for femoral component failure. The only marketed revision option for such a complication involves exchange of all components for a total replacement arthroplasty. Read More

J Arthroplasty 2019 Feb 16. Epub 2019 Feb 16.

Department of Orthopaedic Surgery, Mayo Clinic, Phoenix, AZ.

Background: Historically, infection control rates with debridement and component retention have been poor in the management of acute prosthetic joint infections. We previously described a 2-stage debridement with prosthesis retention protocol for acute periprosthetic joint infection and reported a 90% success rate in a sample of 20 patients.

Methods: A retrospective review of 83 patients who underwent a 2-stage debridement with implant retention with a minimum 1-year follow-up was performed. Read More

Arthroscopy 2019 Mar 11. Epub 2019 Mar 11.

Department of Orthopaedic Surgery, University of California-San Francisco, San Francisco, California, U.S.A.. Electronic address:

Purpose: To present the technique and outcomes of a limited periportal capsulotomy without capsular closure for arthroscopic treatment of femoroacetabular impingement (FAI).

Methods: Retrospective review of a prospectively collected database of patients undergoing primary hip arthroscopy for symptomatic FAI was performed to analyze patients who underwent periportal capsulotomy. Periportal capsulotomy was performed through dilation of the midanterior and anterolateral portals without completion of a full interportal capsulotomy, preserving the iliofemoral ligament. Read More

J Clin Med 2019 Mar 13;8(3). Epub 2019 Mar 13.

Department of Family Medicine, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul 06273, Korea.

(1) Background: Both long and short sleep durations have been associated with negative health outcomes, particularly in middle-aged and older adults. To date, there has been little research on the association between sleep and osteoarthritis. This study aimed to evaluate the relationship between sleep duration and radiographically confirmed osteoarthritis in middle-aged and older women. Read More

Rev Prat 2018 Nov;68(9):991-994

Université Aix-Marseille, service de rhumatologie, CHU Sainte- Marguerite, AP-HM, Marseille, France.

Prognosis and functional outcomes in patients with spondyloarthritis. Even if the course of spondyloarthritis is difficult to predict at the individual level, the prognosis is globally good. Whatever the phenotype, the functional impact is a possible cause of handicap at all stages of the disease. Read More

Orthopade 2019 Mar 13. Epub 2019 Mar 13.

Klinik für Orthopädie, Uniklinik RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland.

Background: Instability is a common cause of failure in primary and, especially, revision total hip arthroplasty. The reasons for instability include implant malpositioning, impingement, inadequate offset reconstruction, and gluteal insufficiency. Impingement following THA and revision THA is divided into prosthetic and bony impingement, and in addition to instability also causes pain in the area of the hip joint. Read More

Reg Anesth Pain Med 2019 Mar 13. Epub 2019 Mar 13.

Department of Anesthesiology, Perioperative Medicine and Intensive Care Medicine, Paracelsus Medizinische Privatuniversitat, Salzburg, Austria.

Background And Objectives: The significance of intravenous over oral acetaminophen (APAP) as part of multimodal analgesic protocols is contested, particularly when considering its relatively high price and use in a surgical cohort such as total hip or knee arthroplasty (THA/TKA), which generally tolerates oral medications. This study aims to elucidate APAP's effectiveness in a large, population-based patient sample.

Methods: 1 039 647 THA/TKA procedures were sampled from the Premier Healthcare claims database 2011-2016. Read More

J Orthop Surg Res 2019 Mar 13;14(1):78. Epub 2019 Mar 13.

Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery, Berlin, Germany.

Background: Two-stage exchange arthroplasty is still the preferred treatment choice for chronic PJI. However, the results remain unpredictable. We analyzed the treatment success of patients with an infected hip prosthesis, who were treated according to a standardized algorithm with a multidisciplinary team approach and evaluated with a strict definition of failure. Read More

Endocr Pract 2019 Mar 13. Epub 2019 Mar 13.

From: Division of Endocrinology, Diabetes, Metabolism and Nutrition, Department of Medicine; Mayo Clinic, Rochester, Minnesota, USA.

Objective: We aimed to describe the natural history of the rare clinical syndrome of transient osteoporosis (TO) and ascertain potential risk factors.

Design: Retrospective cohort study of adults with TO at Mayo Clinic, Rochester over 15 years.

Methods: Adults with acute onset joint pain worsened by weight bearing and bone marrow edema on MRI were included; exclusion criteria were trauma, tumors, rheumatic diseases, avascular necrosis, infection and hyperesthesia. Read More

Eur Spine J 2019 Mar 12. Epub 2019 Mar 12.

Unit of Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.

Purpose: We present an automated method for extracting anatomical parameters from biplanar radiographs of the spine, which is able to deal with a wide scenario of conditions, including sagittal and coronal deformities, degenerative phenomena as well as images acquired with different fields of view.

Methods: The location of 78 landmarks (end plate centers, hip joint centers, and margins of the S1 end plate) was extracted from three-dimensional reconstructions of 493 spines of patients suffering from various disorders, including adolescent idiopathic scoliosis, adult deformities, and spinal stenosis. A fully convolutional neural network featuring an additional differentiable spatial to numerical (DSNT) layer was trained to predict the location of each landmark. Read More

HSS J 2019 Feb 7;15(1):57-65. Epub 2018 Dec 7.

1Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, 535 East 70th St., New York, NY 10021 USA.

Background: Elective total joint arthroplasty may be a gateway to long-term opioid use.

Questions/purpose: We sought to review the literature on multimodal and regional analgesia as a strategy to minimize perioperative opioid use and control pain in patients undergoing total hip arthroplasty (THA) or total knee arthroplasty (TKA).

Methods: We conducted a narrative review to assess the state of the evidence informing opioid-sparing analgesics for THA and TKA. Read More

HSS J 2019 Feb 1;15(1):27-30. Epub 2018 Oct 1.

Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 E. 70th Street, New York, NY 10021 USA.

Background: In the midst of the nationwide opioid epidemic, our institution began an effort to improve the education of opioid prescribers and disseminate procedure-specific guidelines for the number of opioid pills to prescribe post-operatively for total joint arthroplasty. The number of opioid pills suggested for total hip or knee replacement was 70 tablets.

Questions/purposes: We sought to evaluate the impact of the new institutional guideline on opioid prescribing practices, hypothesizing that it would lead to a decrease in the number of pills prescribed but an increase in patient call volume after discharge. Read More

Cartilage 2019 Mar 12:1947603519833138. Epub 2019 Mar 12.

5 ATOS Clinic, Munich, Germany.

Objective: Cam-type femoroacetabular impingement (FAI) syndrome is one of the most frequent reasons for cartilage damage in the hip. Autologous chondrocyte transplantation has proven high success rates in the treatment of focal chondral defects; however, harvesting of chondrocytes in the hip has been reported but not specifically from the region of femoral cam lesions. Therefore, the goal of this study was to analyze the growth and redifferentiation potential of cartilage samples harvested from the cam deformities in patients with FAI. Read More

J Appl Biomech 2019 Mar 12:1-22. Epub 2019 Mar 12.

3 School of Health Sciences, University of Brighton, Brighton, UK.

To-date there is a paucity of information about how different types of conventional running shoes influence lower limb kinematics. The aim of the study was to determine the influence of motion control, neutral and cushioned running shoes upon lower limb kinematics. Twenty-eight active males completed one test session running in standardised motion control, neutral and cushioned running shoes, on a treadmill at a self-selected pace (2. Read More

J Comp Eff Res 2019 Mar 12. Epub 2019 Mar 12.

Department of Joint Surgery, Tianjin Hospital, Tianjin 300211, PR China.

Aim: We conducted a meta-analysis to compare the efficacy and safety of oral and intravenous applications of tranexamic acid (TXA) in total hip arthroplasty (THA).

Materials & Methods: Electronic databases, including PubMed, Cochrane CENTRAL, ScienceDirect and Embase, were searched to identify the studies comparing the efficacy and safety of oral and intravenous applications of TXA in THA. Relevant journals and conference proceedings were manually searched. Read More

J Arthroplasty 2019 Feb 20. Epub 2019 Feb 20.

Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany.

Background: Although 2-stage revision is still considered the gold standard for surgical management of periprosthetic joint infection (PJI), 1-stage revision has been reported to be as effective. Long-term reports for 1-stage revision in hip PJIs are lacking.

Methods: We reviewed our 10-11 years of results of 85 patients who underwent 1-stage exchange of the hip with an antibiotic-loaded bone cemented prosthesis due to PJI to determine the following: (1) What is the infection-free survival? (2) What is the overall survival? and (3) What are the long-term clinical outcomes? All 1-stage revision total hip arthroplasties (THAs) for infection between January 2006 and December 2007, with a minimum 10-year follow-up (range 10-11), were included in this retrospective cohort. Read More

J Arthroplasty 2019 Feb 18. Epub 2019 Feb 18.

Cerrahpasa Medical Faculty, Orthopaedics and Traumatology Department, Istanbul University - Cerrahpasa, Istanbul, Turkey.

Background: Long-term favorable clinical outcomes of anatomical or high hip center techniques in total hip arthroplasty (THA) are reported in patients with developmental dysplasia of the hip (DDH). However, there is little information about the effect of the hip center location on gait characteristics. The purpose of this study was to compare these surgical techniques with gait analysis, analyze the effect of the hip rotation center location on gait parameters, and discuss the possible problems that may arise. Read More

Arthroscopy 2019 Mar 8. Epub 2019 Mar 8.

Section of Young Adult Hip Surgery, Division of Sports Medicine, Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A.. Electronic address:

Purpose: To investigate the rate of return to dance and factors influencing this primary outcome after hip arthroscopy for the treatment of femoroacetabular impingement syndrome.

Methods: A consecutive series of self-identified dancers with femoroacetabular impingement syndrome was included. To assess for the impact of hypermobility on outcomes, patients were classified as having either generalized joint laxity (GJL) or no GJL based on the Beighton-Horan Joint Mobility Index. Read More

Entropy (Basel) 2018 Oct 5;20(10). Epub 2018 Oct 5.

Center for Research in Human Movement Variability, Department of Biomechanics, University of Nebraska at Omaha, 6160 University Drive, Omaha, Nebraska, 68182-0860 USA; and

Sample entropy (SE) has relative consistency using biologically-derived, discrete data >500 data points. For certain populations, collecting this quantity is not feasible and continuous data has been used. The effect of using continuous versus discrete data on SE is unknown, nor are the relative effects of sampling rate and input parameters (comparison vector length) and (tolerance). Read More