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Reg Anesth Pain Med 2022 Jun 27. Epub 2022 Jun 27.

Department of Anesthesiology, Critical Care & Pain Management, Hospital for Special Surgery, New York City, New York, USA

Introduction: We aimed to study the association between tramadol prescribed at discharge (after elective total hip and knee arthroplasty (THA/TKA) surgery) and chronic opioid use postoperatively.

Methods: This retrospective cohort study queried the Truven MarketScan database and identified patients who underwent an elective THA/TKA surgery between 2016 and 2018 and were prescribed opioids at discharge (n=81 049). Multivariable analysis was conducted to study the association between tramadol prescription at discharge and chronic opioid use, with additional analysis adjusting for the amount of opioids prescribed in oral morphine equivalents. Read More

BMJ Case Rep 2022 Jun 27;15(6). Epub 2022 Jun 27.

Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA.

A man in his late 30s developed non-ischaemic cardiomyopathy due to systemic cobalt toxicity associated with accelerated bearing surface wear from metal-on-metal hip resurfacing implanted in the previous 6 years. Following revision arthroplasty, the patient regained baseline cardiac function. Cobalt-induced cardiomyopathy is a grave condition that deserves early consideration due to potentially irreversible morbidity. Read More

Infect Dis Now 2022 Jun 24. Epub 2022 Jun 24.

Centre de Référence en Infections Ostéoarticulaires complexes du Grand Ouest (CRIOGO), Academic hospital of Ponchaillou, 2 Rue Henri le Guilloux, Rennes, France.

Background: Optimal duration of antimicrobial regimen after reimplantation of two-stage procedures for periprosthetic joint infection (PJI) is poorly standardized. The aim of this study was to assess the characteristics of reimplantation microbiology with 6 weeks (2 stage positive culture) or 10 days (2 stage negative culture) of antibiotics in patients with complex chronic PJI and factors associated with microbiology at reimplantation.

Patients And Methods: We performed a retrospective single-center study including all consecutive complex PJI recipients managed by two-stage surgery in a referral centre, from 2015 to 2018. Read More

Arch Phys Med Rehabil 2022 Jun 24. Epub 2022 Jun 24.

Institute for Health and Equity, Medical College of Wisconsin.

Objective: To evaluate the impact of the CJR policy on the 90-day trajectory of post-acute care following a total hip arthroplasty (THA).

Design: Multivariable difference-in-difference models applied to Medicare beneficiaries undergoing a THA prior to (2014-2015) and post-CJR implementation (2017) in areas subjected to or exempt from the policy.

Setting: Hospitals in Standard Metropolitan Statistical Areas (SMSAs). Read More

Orthopadie (Heidelb) 2022 Jun 27. Epub 2022 Jun 27.

UniversitätsCentrum für Orthopädie, Unfall- & Plastische Chirurgie, Universitätsklinikum Carl Gustav Carus, TU Dresden, Fetscherstr. 74, Haus 29, 01307, Dresden, Deutschland.

Hip arthroplasty revision management can range from simple procedures using standard implants to complex surgical interventions requiring the combined use of revision cups, metal augments, bone grafts, and antiprotrusio cages. The adequate restoration of biomechanics and function of the hip joint with reconstruction of the original center of rotation can be challenging. We present an overview of various available techniques with the associated implant and anchoring strategies and the respective clinical results depending on the acetabular defect situation. Read More

Medicine (Baltimore) 2022 Jun 24;101(25):e29283. Epub 2022 Jun 24.

Health Science Division, Division of Plastic and Reconstructive Surgery, Unit of Hip and Pelvis Orthopedic Surgery, Hospital de Traumatología y Ortopedia No. 21, Instituto Mexicano del Seguro Social (IMSS), Monterrey, N.L., México.

Rationale: Evaluation of clinical and radiologic abnormalities in patients with postaxial hypoplasia of the lower extremity (PHLE) for treatment decisions represents a major challenge, which is more complicated when PHLE is associated with congenital dislocation of the patella.

Patient Concerns: : Herein, we present the case of an 8-year-old female patient with evident length inequality in her left lower extremity and inability to walk.

Diagnoses: Radiological evaluation revealed PHLE with fibular hemimelia, proximal femoral focal deficiency, tarsal coalition, and congenital patellar dislocation of the patella. Read More

Orthop Surg 2022 Jun 27. Epub 2022 Jun 27.

Chongqing Key Laboratory of Precision Medicine of Joint Surgery,Center for Joint Surgery, Southwest Hospital, Third Military University (Amy Medical University), Chongqing, China.

Objective: This study explored whether robotic arm-assisted total knee arthroplasty (RATKA) has the advantage of restoring femoral rotational alignment compared to conventional total knee arthroplasty (COTKA).

Methods: Sixty patients (45 women and 15 men) attending our department from May 2019 to December 2020 were selected and divided into two groups, with 30 patients in each group, according to whether they underwent COTKA or RATKA. Femoral rotational alignment results, such as, posterior condylar angle (PCA), patella transverse axis-femoral transepicondylar axis angle (PFA), radiological findings, such as, hip-knee-ankle angle (HKA), lateral distal femoral angle (LDFA), and medial proximal tibial angle (MPTA), and operative data (operation time, intraoperative blood loss, tourniquet time, and length of stay (LOS), and clinical outcomes, such as maximum knee flexion angle (MKFA), Knee Society Score (KSS), and Western Ontario Mac Master University Index Score (WOMAC) were compared within and between the two groups. Read More

Phys Sportsmed 2022 Jun 27. Epub 2022 Jun 27.

Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland.

Disclaimer: This manuscript is original and is not being considered for publication elsewhere. The authors listed have contributed significantly to the given text and consented to have their names appear for authorship. There are no conflicts of interest related to this research and no external financial support. Read More

Fed Pract 2022 Apr 12;39(4):186-189. Epub 2022 Apr 12.

Orlando Veterans Affairs Healthcare System, Florida.

Background: For decades, the total hip arthroplasty procedure of choice has been a standard posterior approach. In the past several years, modified muscle-sparing surgical approaches have been introduced, including the mini posterior and direct anterior approaches. However, the optimal surgical approach is still being debated. Read More

Arch Bone Jt Surg 2022 May;10(5):385-394

University Hospitals Leicester NHS Trusts, Leicester Royal Infirmary, Infirmary Square, Leicester, LE1 5WW.

Background: Primary total hip arthroplasty (THA) is becoming an increasingly popular and efficacious medical procedure. There have been a number of studies evaluating tantalum acetabular cups compared with the conventional titanium acetabular cups for use in total hip arthroplasties. We conducted a systematic review and summarize clinical studies comparing tantalum acetabular cups with the conventional titanium acetabular cups for use in primary total hip arthroplasties. Read More

Arch Bone Jt Surg 2022 May;10(5):403-412

Department of Radiology, Radiology Informatics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.

Background: Developmental dysplasia of the hip (DDH) is a spectrum of diseases involving the femoroacetabular joint. Due to the controversies over the value of different strategies used for DDH screening, this systematic review and meta-analysis aimed to assess the diagnostic performance of standard physical examination maneuvers on the diagnosis of DDH, compared to the Graf ultrasonography (US) method.

Methods: PubMed, Web of Science, and SCOPUS databases were searched until the end of October 2020. Read More

Knee 2022 Jun 23;37:103-111. Epub 2022 Jun 23.

Department of Orthopedics, General Hospital of Chinese PLA, No. 28 Fuxing Road, Beijing 100853, China; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, No. 28 Fuxing Road, Beijing 100853, China.

Background: A forgotten joint is considered the ultimate goal of joint replacement. We aim to explore the predictive factors of a forgotten joint after fixed-bearing unicompartmental knee arthroplasty (UKA).

Methods: This retrospective cohort study used prospectively collected data from 302 cases of medial-compartment UKA with a minimum of 2-year follow-up. Read More

Comput Methods Programs Biomed 2022 Jun 8;222:106937. Epub 2022 Jun 8.

WMG, The University of Warwick, Coventry CV4 7AL, UK.

Background And Objective: Pre-operative surgical planning using computer simulation is increasingly standard practice before Total Hip Arthroplasty (THA), in order to determine the optimal implant positions, and thereby minimise post-operative complications such as dislocation, wear and leg length discrepancy. One of the limitations of current methods, however, is the lack of information on the subject-specific reference range of motion (ROM) that could be used as targets for surgical planning. Only a limited number of hip motions are considered, which are neither subject-specific, nor representative of all the hip motions associated with all the activities of daily livings (ADLs). Read More

J Arthroplasty 2022 Jun 21. Epub 2022 Jun 21.

Weill Cornell Medicine, New York, NY 10021.

Background: A substantial number of randomized controlled trial (RCT) studies in total joint arthroplasty (TJA) are published each year in the United States (US). However, it is unknown how closely the demographic and clinical characteristics of these cohorts resemble that of the US patient population undergoing TJA. Thus, the purpose of this systematic review was to evaluate the patient characteristics of published RCTs in TJA in the US and to compare these characteristics against patient cohorts from national patient databases. Read More

J Biomech 2022 Jun 11;141:111182. Epub 2022 Jun 11.

Mechanical and Materials Engineering, Queen's University, ON, Canada.

Markerless motion capture allows whole-body movements to be captured without the need for physical markers to be placed on the body. This enables motion capture analyses to be conducted in more ecologically valid environments. However, the influences of varied clothing on video-based markerless motion capture assessments remain largely unexplored. Read More

PLoS One 2022 24;17(6):e0270496. Epub 2022 Jun 24.

Department of physical Medicine and Rehabilitation, Baqiyatallah University of Medical Sciences, Tehran, Iran.

Boots are often used in sports, occupations, and rehabilitation. However, there are few studies on the biomechanical alterations after wearing boots. The current study aimed to compare the effects of running shoes and boots on running biomechanics. Read More

JBJS Rev 2022 May 5;10(5). Epub 2022 May 5.

Department of Physical Therapy, University of Kentucky, Lexington, Kentucky.

»: Nonoperative treatment of a lateral patellar dislocation produces favorable functional results, but as high as 35% of individuals experience recurrent dislocations.

»: Medial patellofemoral ligament reconstruction is an effective treatment to prevent recurrent dislocations and yield excellent outcomes with a high rate of return to sport.

»: Both nonoperative and postoperative rehabilitation should center on resolving pain and edema, restoring motion, and incorporating isolated and multijoint progressive strengthening exercises targeting the hip and knee. Read More

SICOT J 2022 24;8:27. Epub 2022 Jun 24.

Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan - Department of Rehabilitation Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan.

Introduction: Microsoft Kinect V2 (Kinect) is a peripheral device of Xbox and acquires information such as depth, posture, and skeleton definition. In this study, we investigated whether Kinect can be used for human gait analysis.

Methods: Ten healthy volunteers walked 20 trials, and each walk was recorded by a Kinect and infrared- and marker-based-motion capture system. Read More

Front Biosci (Landmark Ed) 2022 Jun;27(6):181

State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China.

Background: Avascular necrosis of the femoral head (AVNFH) is a progressive, multifactorial, and challenging clinical disease that causes hip pain and loss of hip joint function. Till now, the pathogenesis of AVNFH was not fully understood. In this study, we characterized cartilage protein profiles of patients with AVNFH and identified the potential proteins involved in the progress of AVNFH using proteomics technique. Read More

Arthrosc Sports Med Rehabil 2022 Jun 24;4(3):e1083-e1089. Epub 2022 May 24.

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

Purpose: To compare joint distraction measured on ultrasound (US) with joint space width (JSW) measured on fluoroscopy in hip arthroscopy and to determine whether ultrasound guidance is as safe and effective as fluoroscopy, the current gold standard, for establishing arthroscopic portals.

Methods: Cadaveric whole-body specimens were positioned supine and subjected to 60 lbs. of unilateral axial traction using a distal femoral Steinman pin. Read More

Sensors (Basel) 2022 Jun 16;22(12). Epub 2022 Jun 16.

IRCCS San Raffaele Roma, 00163 Rome, Italy.

(1) Background: In neurorehabilitation, Wearable Powered Exoskeletons (WPEs) enable intensive gait training even in individuals who are unable to maintain an upright position. The importance of WPEs is not only related to their impact on walking recovery, but also to the possibility of using them as assistive technology; however, WPE-assisted community ambulation has rarely been studied in terms of walking performance in real-life scenarios. (2) Methods: This study proposes the integration of an Inertial Measurement Unit (IMU) system to analyze gait kinematics during real-life outdoor scenarios (regular, irregular terrains, and slopes) by comparing the ecological gait (no-WPE condition) and WPE-assisted gait in five able-bodied volunteers. Read More

Sensors (Basel) 2022 Jun 9;22(12). Epub 2022 Jun 9.

Chichester Institute of Sport, University of Chichester, Chichester PO19 6PE, UK.

The aim of this study was to assess the validity of electro-goniometers as a tool for recording continuous relative phase data at two joint couplings during cycling tasks at a range of cadences. Seven participants (4 male, 3 female, age: 29 ± 7 years, height: 1.76 ± 0. Read More

Micromachines (Basel) 2022 May 24;13(6). Epub 2022 May 24.

Buffalo Robot Tech Co., Ltd., No. 888 Tianfu Ave, Chengdu 610213, China.

Lower-limb exoskeletons have received considerable attention because of their effectiveness in walking assistance and rehabilitation for paraplegic patients. Excessive foot-ground impacts during walking make patients uncomfortable and even lead to injury. In this paper, we propose an optimized knee trajectory modulation (OKTM) for foot-ground impact reduction. Read More

Medicina (Kaunas) 2022 May 26;58(6). Epub 2022 May 26.

Department of Orthopaedic Surgery, Nihon University Itabashi Hospital, 30-1, Ohyaguchikami-cho, Itabashi-ku, Tokyo 173-8610, Japan.

We performed anterolateral total hip arthroplasty (ALS THA) with the purpose of complete muscle-tendon preservation without muscle-tendon dissection. This study aimed to evaluate muscle damage in the periprosthetic hip joint muscles of patients undergoing ALS THA at 1-year post-operative hip magnetic resonance imaging (MRI). We evaluated changes in the muscle cross-sectional area (M-CSA) and fatty atrophy of the periprosthetic muscles. Read More

Medicina (Kaunas) 2022 May 24;58(6). Epub 2022 May 24.

Orthopaedic Professorship of the University Hospital Jena, Orthopaedic Department Waldkliniken Eisenberg, 07607 Eisenberg, Germany.

No gold standard exists for treating persistent periprosthetic knee infections. Knee arthrodesis represents one treatment concept for extensive bone defects and extensor system insufficiencies. It has already been shown that knee arthrodesis leads to a significant reduction in one's quality of life. Read More

J Clin Med 2022 Jun 15;11(12). Epub 2022 Jun 15.

Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taoyuan 333423, Taiwan.

: Acetabular cage reconstruction with bone allografts is among the successful strategies to deal with massive acetabular bone loss. However, the nonbiological fixation nature of cages can compromise long-term success. Tantalum trabecular metal acetabular cups (TM cups) have been used in acetabular revision surgery because of their increased initial stability and good bone ingrowth features. Read More

Healthcare (Basel) 2022 May 28;10(6). Epub 2022 May 28.

Department of Anaesthesia and Operating Theatre Services, Kwong Wah Hospital, 25 Waterloo Road, Yau Ma Tei, Hong Kong, China.

With an increasingly ageing population, there is a growing impact of fragility hip fracture on the healthcare system and on society as a whole. Oral and injectable analgesics are often insufficient whilst traction and regional blocks do not allow patients to be discharged easily. While the conventional approach of ultrasound-guided anterior hip pericapsular neurolysis can help a lot of inoperable hip fracture patients to relieve their fracture pain and facilitate subsequent nursing care, enormous technical challenges are encountered in some cases. Read More

Diagnostics (Basel) 2022 Jun 15;12(6). Epub 2022 Jun 15.

Department of Bioinformatics and Telemedicine, Faculty of Medicine, Jagiellonian University Medical College, 7e Kopernika st., 31-034 Krakow, Poland.

(1) Background. This paper presents a case of hip joints that were initially described as either normal or physiologically immature in four successive ultrasound examinations using the static method by Graf; however, the final treatment of the patient involved multiple hip reconstruction surgeries. (2) Case presentation. Read More

Diagnostics (Basel) 2022 Jun 15;12(6). Epub 2022 Jun 15.

Faculty of Sports Science, Ningbo University, Ningbo 315211, China.

The aim of this study was to assess the stiffness of each lower limb joint in healthy persons walking at varying speeds when fatigued. The study included 24 subjects (all male; age: 28.16 ± 7. Read More

Br J Sports Med 2022 Jun 23. Epub 2022 Jun 23.

Department of Orthopedic Surgery, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg.