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J Orthop Trauma 2020 May 30. Epub 2020 May 30.

Department of Orthopaedic Surgery, Allegheny General Hospital, Allegheny Health Network, Pittsburgh, PA.

Objectives: The purpose of this mechanical study was to compare two methods of augmented stabilization of Pauwels Type III femoral neck fractures.

Methods: Ten matched pairs of young cadaveric femurs were cut 22cm distal to the lesser trochanter. All specimens received a 70-degree osteotomy which was stabilized with a 135-degree sliding hip screw (SHS). Read More

J Pediatr Orthop 2020 Jul;40(6):e454-e459

Division of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, NY.

Background: ε-Aminocaproic acid (EACA) is an antifibrinolytic agent that has been shown to decrease blood loss and transfusion requirements in several populations undergoing various surgical procedures. However, the efficacy of EACA has not been assessed in pediatric patients with cerebral palsy undergoing bilateral varus rotational femoral osteotomies. The purpose of this study was to assess the efficacy of intravenous EACA in reducing calculated intraoperative blood loss and transfusions in this population. Read More

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):457-463

Center of Diagnosis and Treatment for Joint Disease, Beijing Charity Hospital, Capital Medical University, Beijing 100068, China.

To examine the clinical effects of the treatment of knee osteoarthritis patients with kinematic alignment technique of total knee replacement (KA-TKA) assisted by patient-specific instrumentation (PSI). The clinical data of 14 patients with knee osteoarthritis treated with unilateral KA-TKA assisted by PSI at Department of Orthopaedic Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University from May 2018 to August 2019 were analyzed retrospectively. There were 6 males and 8 females, aged 66. Read More

Gait Posture 2020 May 25;80:101-105. Epub 2020 May 25.

Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-Gu, Sungnam, Gyeonggi 13620, Republic of Korea. Electronic address:

Background: Pathologic gait is common in patients with cerebral palsy (CP). Single-event multilevel surgery (SEMLS) is a combination of surgical procedures to improve pathologic gait in patients with CP. However, the effect of each procedure is difficult to predict. Read More

BMC Musculoskelet Disord 2020 Jun 3;21(1):344. Epub 2020 Jun 3.

Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takaramachi, Kanazawa City, Ishikawa Prefecture, 920-8641, Japan.

Background: A few previous studies have investigated patient satisfaction after total hip arthroplasty (THA) according to the degree of pelvic deformity. This study compared patient-reported outcomes after primary THA for Crowe types III, IV and I dysplasia.

Methods: This retrospective, single-center, single-surgeon case-control study included patients who underwent primary THA between 2008 and 2016. Read More

Cartilage 2020 Jun 4:1947603520928582. Epub 2020 Jun 4.

Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

Objective: This study aimed to evaluate variations in anterior condylar height (ACH) of the distal femur in varus knee osteoarthritis and evaluate the association between ACH and knee flexion.

Design: Computed tomography (CT) images of 171 knees (143 patients; age 73.7 ± 8. Read More

Cureus 2020 Apr 29;12(4):e7894. Epub 2020 Apr 29.

Orthopaedics, University College of Medicine Sciences and Guru Teg Bahadur Hospital, Delhi, IND.

Aim To evaluate the degree of correction and outcomes after correction of genu valgum deformity using dome osteotomy with plate osteosynthesis in late adolescents and young adults. Methods A total of 27 knees in 21 patients underwent correction using dome osteotomy fixed with 3.5-mm low-profile proximal humeral locking system (PHILOS) plate. Read More

Injury 2020 May 25. Epub 2020 May 25.

Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany. Electronic address:

Background: Comminuted lateral tibial plateau fractures pose a challenge to surgeons, with non-anatomical reductions in 70-89%, involving the posterolateral articular surface. The purpose of this study was to examine the posterolateral joint visibility, using lateral extended approaches, such as the lateral femoral epicondyle osteotomy or the fibula osteotomy. Further, the study aimed to compare the combined osteotomy of the femoral footprints of the lateral collateral ligament (LCL) and popliteus tendon (PLT) to the isolated osteotomy of the femoral LCL footprint or the fibula osteotomy, in terms of posterolateral joint accessibility. Read More

Bone Joint J 2020 Jun;102-B(6):709-715

Orthopaedic Department, Queen Elizabeth University Hospital, Glasgow, UK.

Aims: Femoral revision component subsidence has been identified as predicting early failure in revision hip surgery. This comparative cohort study assessed the potential risk factors of subsidence in two commonly used femoral implant designs.

Methods: A comparative cohort study was undertaken, analyzing a consecutive series of patients following revision total hip arthroplasties using either a tapered-modular (TM) fluted titanium or a porous-coated cylindrical modular (PCM) titanium femoral component, between April 2006 and May 2018. Read More

J Arthroplasty 2020 May 11. Epub 2020 May 11.

Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea.

Background: Total hip arthroplasty (THA) of patients with a proximal femoral deformity is technically demanding. This deformity poses the risk of femoral fracture or perforation; stem malposition; and failed stem fixation. To insert a femoral stem in neutral position with a good fit, we removed the greater trochanter in case of a varus deformity, and the lesser trochanter in case of valgus deformity, while performing THA. Read More

J Orthop 2020 Nov-Dec;22:274-277. Epub 2020 May 6.

London Health Sciences Centre, London, Ontario, Canada.

Objective: Direct anterior approach (DAA) is becoming a popular option for both primary and revision total hip arthroplasty (THA). Adequate exposure is crucial in the setting of revision THA. The purpose of this article is to describe two different techniques for expanded femoral exposure through the DAA, the anterior extended trochanteric osteotomy and anterior cortical window. Read More

BMC Musculoskelet Disord 2020 May 27;21(1):329. Epub 2020 May 27.

Unfallklinik Ludwigshafen, Klinik für Unfallchirurgie und Orthopädie, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany.

Background: The treatment of fracture-related infections (FRI) is still a challenge for orthopedic surgeons. The prevalence of FRI is particularly high in open fractures with extensive soft-tissue damage. This study aimed to develop a new two-step animal model for non-unions with segmental bone defects, which could be used to evaluate new innovative bone substitutes to improve the therapeutic options in humans with FRI and bone defects. Read More

Am J Sports Med 2020 May 27:363546520920626. Epub 2020 May 27.

Seattle Orthopaedic Center, Seattle, Washington, USA.

Background: Young patients with symptomatic chondral defects in the medial compartment with varus malalignment may undergo opening wedge high tibial osteotomy (HTO) with concomitant osteochondral allograft transplantation (OCA) (HTO + OCA). Although patients have demonstrated favorable outcomes after HTO + OCA, limited information is available regarding return to sporting activities after this procedure.

Purpose: To evaluate (1) the timeline to return to sports (RTS), (2) patient satisfaction, and (3) reasons for discontinuing sporting activity after HTO + OCA, and to identify predictive factors of RTS. Read More

J Int Med Res 2020 May;48(5):300060519889742

Department of Orthopedic Center, The First Affiliated Hospital of Kashi Area, Kashi, XinJiang, China.

Objective: To compare the knee shape and bone parameters between knee prosthesis products from overseas companies and a Chinese patient's knee, and to apply the anatomical basis for Chinese knee prosthesis design.

Methods: Three-dimensional digital models were built, including prosthesis products for a normal adult. The relevant anatomy index was measured, and physical parameter, radiographic, geometric, knee kinematic, and distal geometry data were collected on the femur and tibia. Read More

J Pediatr Orthop B 2020 May 21. Epub 2020 May 21.

Department of Pediatric Orthopaedics, Beijing Jishuitan Hospital, Beijing, China.

Focal fibrocartilaginous dysplasia (FFCD) of the distal femur is a rare disorder that results in a varus or valgus of knee. Due to the small number of cases and unconfirmed natural history of the disease, treatment methods remain variable. This study aimed to determine a strategy to successfully manage distal femoral FFCD. Read More

Zhongguo Gu Shang 2020 May;33(5):465-9

Department of Minimally InvasiveJoint, the Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing 100029, China.

Objective: To evaluate the cartilage regeneration in the knee joint by arthroscopy after high tibial osteotomy.

Methods: Eleven patients were included in the study who were treated with high tibial osteotomy and underwent microscopy when the internal fixation was unloaded from September 2017 to September 2019. Among them, there were 2 males and 9 females, aged from 55 to 64 years old. Read More

Cartilage 2020 May 25:1947603520924775. Epub 2020 May 25.

Midwest Orthopaedics at Rush University Medical Center, Chicago, IL, USA.

. The aims of this study were to (1) examine the timeline of return to sport (RTS) following isolated lateral opening wedge distal femoral osteotomy (DFO), (2) evaluate the degree of participation on RTS, and (3) identify risk factors for failure to RTS. . Read More

Arch Orthop Trauma Surg 2020 May 23. Epub 2020 May 23.

OCM | Orthopädische Chirurgie München, Steinerstrasse 6, 812306, München, Germany.

Background: High tibial osteotomy (HTO) for varus deformities is a common concomitant treatment in cartilage surgery. Aim of the present study was to analyze factors influencing the decision towards accompanying HTO in patients with cartilage defects of the medial femoral condyle, such as the amount of varus deformity.

Methods: Data from 4986 patients treated for cartilage defects of the knee from the German Cartilage Registry (KnorpelRegister DGOU) were used for the current analysis. Read More

Int J Surg Case Rep 2020 May 8;71:85-90. Epub 2020 May 8.

Department of Orthopaedic & Traumatology, Cipto Mangunkusumo National Central Hospital and Faculty of Medicine, Universitas Indonesia, Jalan Diponegoro No. 71, Central Jakarta, Jakarta 10430, Indonesia.

Introduction: Traumatic dislocation of the hip is a very severe injury. Posterior hip dislocation can be associated with acetabular fracture, which can ultimately result in a higher incidence of complications.

Case Presentation: We present a case report of 26-year-old men with a motor vehicle accident and suffered a posterior hip dislocation on left hip joint and acetabular fracture with Judet-Letournel type posterior wall and femoral head fracture. Read More

Medicine (Baltimore) 2020 May;99(20):e20215

Department of Orthopaedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.

Hip preserving procedures are still a challenge in late-stage osteonecrosis of femoral head (ONFH) patients. We aimed to compare the clinical outcomes of surgical dislocation and impaction bone graft and surgical dislocation and rotational osteotomy for treatment of ONFH in Association Research Circulation Osseous (ARCO) stage III patients.We retrospectively reviewed 30 ARCO stage III patients (33 hips) who had surgical dislocation and impaction bone graft or surgical dislocation and rotational osteotomy in our center from June 2012 to December 2017. Read More

Medicine (Baltimore) 2020 May;99(20):e19617

Service de Maladies Infectieuses et Tropicales, Hospices Civils de Lyon - Hôpital de la Croix-Rousse Lyon, Cedex 04.

To describe the epidemiological, clinical, laboratory, and radiological features and the management of adult patients who experienced a relapse between 2003 and 2015 of an acute hematogenous osteomyelitis acquired in childhood.A retrospective multicentric cohort study was conducted in 5 centers in France.Thirty-seven patients were included. Read More

Ann Med Surg (Lond) 2020 Jul 11;55:5-8. Epub 2020 May 11.

Department of Orthopaedic Surgery, Saga Handicapped Children's Hospital, Japan.

Introduction: The treatment strategies for residual deformity of Perthes disease are not established.

Case Presentation: This is a case report of a 15-year-old boy. He developed right Perthes disease (lateral pillar classification group B) when he was 10 years old and underwent varus femoral osteotomy of the right side. Read More

Bone Joint Res 2020 Mar 16;9(3):99-107. Epub 2020 May 16.

Department of Orthopaedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Skeleton Materials and Bio-compatibility Core Lab, Research Center of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.

Aims: Cigarette smoking has a negative impact on the skeletal system, causes a decrease in bone mass in both young and old patients, and is considered a risk factor for the development of osteoporosis. In addition, it disturbs the bone healing process and prolongs the healing time after fractures. The mechanisms by which cigarette smoking impairs fracture healing are not fully understood. Read More

J Knee Surg 2020 May 19. Epub 2020 May 19.

Department of Orthopedic Surgery, Limb Lengthening and Complex Reconstruction Service (LLCRS), Hospital for Special Surgery, Weill Cornell Medical College, Cornell University, New York, New York.

Preoperative planning is important for accurate intraoperative execution in many surgical fields. Planning for distal femoral osteotomies (DFOs) and proximal tibial osteotomies (PTOs) consists of choosing the level of the osteotomy, measuring the angle of the osteotomy based on hip-knee-ankle alignment, and choosing a proper osteotomy wedge size. Medical imaging IT solutions company Sectra has implemented a new osteotomy tool in their radiographic system that is simpler than the accepted standard of modified center of rotation of angulation (mCORA) technique, yet unvalidated. Read More

J Orthop Trauma 2020 May 8. Epub 2020 May 8.

Naval Medical Center San Diego.

Objectives: To review the clinical course, complication rates, and mid-term functional outcomes associated with the treatment of displaced femoral neck stress fractures (FNSFs) DESIGN:: Retrospective Case Series SETTING:: Military Tertiary Referral Center PATIENTS:: Twenty-one operatively treated displaced FNSFs between 2002 and 2015.

Intervention: Urgent reduction and fixation was performed. If nonunion developed, an intertrochanteric osteotomy was performed. Read More

Orthop J Sports Med 2020 Apr 28;8(4):2325967120914872. Epub 2020 Apr 28.

Department of Orthopaedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.

Background: The surgical indication for tibial tubercle osteotomy (TTO) has been based on a tibial tubercle-trochlear groove (TT-TG) distance of 20 mm or greater in patients with patellar dislocation. However, the measurement of this parameter is less reliable in patients with trochlear dysplasia.

Hypothesis: The novel measurement of tibial tubercle-Roman arch (TT-RA) distance would be a reliable parameter for identifying the relative position of the tibial tubercle in patients with patellar dislocation, especially those with trochlear dysplasia. Read More

J Arthroplasty 2020 Apr 21. Epub 2020 Apr 21.

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

Background: Total hip arthroplasty (THA) involving shortening osteotomy for patients with Crowe type 3 or 4 dysplasia is a challenging surgical procedure. This study aims to demonstrate that rectangular femoral component use in anatomical reconstructions with THA and transverse shortening osteotomy yields successful results without the use of bone graft or any fixation material at the osteotomy site.

Methods: Fifty hips from 41 patients were identified retrospectively as per study objectives. Read More

J Arthroplasty 2020 Apr 19. Epub 2020 Apr 19.

Medical Faculty, Department of Orthopaedics and Traumatology, Ondokuz Mayıs University, Samsun, Turkey.

Background: The aim of this study is to compare clinical results of Crowe type III-IV developmental dysplasia of the hip (DDH) patients who underwent total hip arthroplasty with either trochanteric slide osteotomy (TSO) or subtrochanteric shortening osteotomy (SSO).

Methods: The patients who underwent cementless total hip arthroplasty with femoral shortening osteotomy due to Crowe type III/IV DDH between 2004 and 2014 and completed at least 5 years of follow-up were retrospectively analyzed. The patients were grouped according to the type of shortening osteotomy as either TSO or SSO. Read More

Int J Surg Case Rep 2020 11;70:101-105. Epub 2020 May 11.

Department of Orthopaedic Surgery, Yaizu City Hospital, Shizuoka, Japan. Electronic address:

Introduction: Femoral medial condyle fracture is a rare fracture. Here, we report a case of femoral medial condyle fracture treated with lag screws and proximal tibial plate as a buttress plate.

Case Presentation: A 80-year-old woman fell down 15 steps at her home and reported to our hospital with severe right knee pain. Read More

Clin Biomech (Bristol, Avon) 2020 Apr 21;76:104995. Epub 2020 Apr 21.

Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Pb. 1171 Blindern, 0318 Oslo, Norway.

Background: Stable fixation promotes union in the common femoral neck fractures, but high non-union rates due to fixation failure remain with traditional fixations. To enhance stability, a plate interlocking pins, but without further fixation to femur has been developed. To our knowledge, no comparison to other conventional fixation methods has been performed. Read More

J Knee Surg 2020 May 15. Epub 2020 May 15.

Department of Trauma, Hand and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

The goal of surgical reconstruction of comminuted tibial plateau fractures is an anatomical reconstruction and stable fixation of the articular surface. This can be difficult due to poor visualization of the posterolateral and central segments of the articular surface of the proximal tibia. To improve visualization, the lateral approach can be extended with an osteotomy of the femoral epicondyle. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2020 May;34(5):557-562

Department of Orthopedics, the First Medical Center, General Hospital of Chinese PLA, Beijing, 100853, P.R.China.

Objective: To investigate revision reasons and prosthesis selection of Crowe Ⅳ developmental dysplasia of the hip (DDH) after total hip arthroplasty (THA).

Methods: A clinical data of 14 patients (15 hips) with Crowe Ⅳ DDH, who underwent a revision hip arthroplasty between January 2008 and May 2018, was retrospectively reviewed. There were 1 male (1 hip) and 13 females (14 hips). Read More

Am J Sports Med 2020 Jun 14;48(7):1636-1646. Epub 2020 May 14.

American Hip Institute, Des Plaines, Illinois, USA.

Background: Different options, from reverse (anteverting) periacetabular osteotomy to hip arthroscopy, have been proposed for surgical treatment of femoroacetabular impingement syndrome (FAIS) in the setting of acetabular retroversion.

Purpose: (1) To report and analyze midterm patient-reported outcome scores (PROs) in patients with FAIS and labral tears in the setting of acetabular retroversion after isolated hip arthroscopy and (2) to compare these PROs with those of a propensity-matched control group without acetabular retroversion.

Study Design: Cohort study; Level of evidence, 3. Read More

Asia Pac J Sports Med Arthrosc Rehabil Technol 2020 Jul 4;21:17-21. Epub 2020 May 4.

Department of Orthopedic Surgery, Showa University Fujigaoka Hospital, Japan.

Introduction: Recently, some studies showed assessment of the component gap is important for determination of the implant-inserted condition during total knee arthroplasty (TKA). We perform the modified gap technique with adjustment of the virtual gap which estimated by computer-aided design (CAD) using navigation system. The purpose of this study was to compare the virtual gap (CAD-gap) with the actual gap after inserting a femoral trial component (Trial-gap), and examine the usefulness of the surgical technique. Read More

Hip Int 2020 May 11:1120700020922202. Epub 2020 May 11.

Imperial College Healthcare NHS Trust, London, UK.

Introduction: Periacetabular osteotomy (PAO) is an established treatment for symptomatic acetabular dysplasia in skeletally mature individuals without arthritis. Pelvic nonunion and associated stress fractures are under-reported. Nonunited stress fractures can cause continued buttock pain and pelvic instability. Read More

Arthroscopy 2020 May 7. Epub 2020 May 7.

Department of Orthopaedic Surgery, Hanyang University Myongji Hospital, Goyang-si, Gyeonggi-do, Korea. Electronic address:

Purpose: To compare the clinical and radiological outcomes and arthroscopic findings of proximal tibial osteotomy (PTO) alone versus PTO combined with medial meniscal posterior root repair (MMPRR).

Methods: Between October 2010 and September 2016, the patients who underwent PTO and second-look arthroscopy at a minimum of 24 months postoperatively were reviewed. Patients were divided into group I (isolated PTO), group P (PTO with MMPRR using the pull-out technique), and group F (PTO and MMPRR using the side-to-side repair method). Read More

Int Orthop 2020 May 9. Epub 2020 May 9.

Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix Rousse Hospital, Civil Hospices of Lyon, 103 Boulevard de la Croix Rousse, 69004, Lyon, France.

Aim Of The Study: The aim of this study was to evaluate the radiographic effect of sagittal tibial osteotomy (STO), flexion tibial osteotomy (FTO) and deflexion tibial osteotomy (DTO) around the knee. It has been hypothesized that proximal STO modifies patellar height and could cause varus/valgus changes of the anatomical tibial axis: The purpose of the study was to verify this and to analyse these modifications.

Method: Patients underwent proximal STO in our department between 2007 and 2018: overall 28 consecutive patients (19 males, 9 females; 28 knees). Read More

Arch Orthop Trauma Surg 2020 May 8. Epub 2020 May 8.

Department of Orthopedics and Traumatology, Bürgerspital Solothurn, Schöngrünstrasse 42, 4500, Solothurn, Switzerland.

Background: To date, only limited literature exists regarding revision of total hip arthroplasty (THA) through the direct anterior approach (DAA). However, as the popularity of the DAA for primary surgery is increasing, surgeons will be confronted with the challenge of performing revision surgery through the DAA. The aim of this study was to review the potential of the DAA in the revision setting and to report the clinical results, radiologic outcomes and complication rates of 63 patients undergoing revision THA through the DAA. Read More

Orthop Surg 2020 May 7. Epub 2020 May 7.

Department of Osteopathy, The Second Hospital of Tangshan, Tangshan, China.

Objectives: To evaluate the mechanical properties and provide a theoretical basis of a diaphyseal prosthesis with tooth mechanism using the finite element analysis method from the point of view of biomechanics.

Methods: A 3D digital femur model was generated based on a 28-year-old healthy man's femoral computed tomography (CT) data in Mimics 17.0 and the customized diaphyseal prostheses with/without tooth mechanism were designed in SolidWorks 2016. Read More

J Hip Preserv Surg 2020 Jan 25;7(1):153-159. Epub 2020 Jan 25.

Centum High School, Busan, South Korea.

Femoral retroversion is an extra-articular cause of cam-type femoroacetabular impingement (FAI) via early engagement with anterior rim. Valgus hip also causes extra-articular FAI by decreasing the range of motion. We present a case of valgus hip accompanied by femoral retroversion, which was refractory to prior arthroscopic femoroplasty. Read More

J Hip Preserv Surg 2020 Jan 28;7(1):85-94. Epub 2019 Nov 28.

Department of Orthopaedic Surgery, Cleveland Clinic Foundation, 9500 Euclid Avenue A41, Cleveland, OH 44123, USA.

Subchondral insufficiency fractures of the femoral head (SIFFH) are a cause of femoral head collapse leading to degenerative hip disease. SIFFH is often mistaken for osteonecrosis given similar clinical and radiographic features. These similarities often lead to missed or delayed diagnosis which can often delay or change management. Read More

J Med Invest 2020 ;67(1.2):214-216

Department of Orthopedic, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.

The Rotational osteotomy for femoral retroversion has been extremely rare despite the known association between femoral neck retroversion, hip pain, and osteoarthritis. Here, we describe a case of femoral neck retroversion for which proximal femoral rotation osteotomy. A 16-year-old boy with a past history of developmental dysplasia of the both hip treated conservatively presented with a complaint of pain in left hips. Read More

Knee Surg Sports Traumatol Arthrosc 2020 May 5. Epub 2020 May 5.

Aix Marseille Univ, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Department of Orthopedics and Traumatology, Marseille, France.

Purpose: Given the goal of achieving optimal correction and alignment after knee arthroplasty or high tibial osteotomy, literature focusing on the inter-individual variability of the native knee, tibia and femur with regards to the coronal or sagittal alignment is lacking. The aim of this study was to analyse normal angular values in the healthy middle-aged population and determine differences of angular values according to inter-individual features. The first hypothesis was that common morphological patterns may be identified in the healthy middle-aged non-osteoarthritic population. Read More

J Knee Surg 2020 May 5. Epub 2020 May 5.

Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.

Effective treatment for bipolar articular cartilage lesions in the knee remains a clinical challenge. Lower extremity malalignment is a risk factor for treatment failures, which can be addressed by tibial or femoral osteotomy. The purpose of this study was to compare outcomes among patients who underwent knee joint restoration by osteochondral allograft (OCA) transplantation with concurrent or staged realignment osteotomy. Read More

Arthroplast Today 2020 Jun 23;6(2):153-157. Epub 2020 Apr 23.

Department of Joint Surgery, Chinese PLA General Hospital, Haidian, Beijing, China.

Distal femur stem cortical perforation is a rare but potentially catastrophic complication during total hip arthroplasty. If unrecognized, it can lead to transverse fracture of the femur while the patient is ambulating. If an uncemented femur stem was used, previous literature unanimously agrees that revision surgery should be performed. Read More

J Int Med Res 2020 May;48(5):300060520921334

Department of Osteopathy, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China.

Dwarfism is a condition of extreme short stature. Total hip arthroplasty (THA) in patients with dwarfism is a very demanding procedure due to their specific joint deformity and small bone size, which increases the technical difficulty of the THA procedure in such patients with hip dysplasia. This current case report describes a 29-year-old female patient that was admitted due to shortening of the right lower limb, as compared with the contralateral side, which had been present for 18 years. Read More

Orthop Traumatol Surg Res 2020 Apr 29. Epub 2020 Apr 29.

Chirurgie orthopédique pédiatrique, hôpital universitaire Necker-Enfants maladies, 149, rue de Sèvres, 75743 Paris, France. Electronic address:

Introduction: Femoral derotation osteotomy (FDO) is a treatment option in children and adolescents with cerebral palsy who have transverse plane deviations in their lower limbs. When the transverse kinematic deviations are asymmetric, the osteotomy indication can be unilateral.

Hypothesis: Unilateral FDO has a kinematic effect on ipsilateral transverse plane deviations along with those of the pelvis and contralateral side. Read More

Arthroscopy 2020 Apr 27. Epub 2020 Apr 27.

Hospital for Special Surgery, New York, NY, USA. Electronic address:

Purpose: To assess graft survivorship in patients that underwent autologous chondrocyte implantation (ACI) or osteochondral allograft transplantation (OCA) for the treatment of focal full-thickness cartilage lesions on the medial femoral condyle (MFC) with and without concomitant high tibial osteotomy (HTO), depending on the pre-operative lower extremity alignment. A secondary purpose was to retrospectively evaluate associated factors for ACI and OCA graft failures.

Methods: A total of 168 patients who underwent cartilage repair with ACI or OCA with or without HTO for focal chondral defects on the MFC by a single surgeon between March 2007 and February 2018 were included. Read More

Cureus 2020 Mar 27;12(3):e7437. Epub 2020 Mar 27.

Orthopaedics, Panagiotis & Aglaia Kyriakou Children's Hospital, Athens, GRC.

Purpose The treatment of painful and chronic dislocated hip in children with severe cerebral palsy (CP) is particularly demanding and controversial. Numerous surgical techniques have been described, and their outcomes vary a lot. The purpose of the present study is to evaluate a new method, which combines varus derotational subtrochanteric osteotomy (VDSO) and external osteosynthesis: (VDSOEO). Read More

J Child Orthop 2020 Apr;14(2):98-105

Boston Children's Hospital, Boston, Massachusetts, USA.

Purpose: Our primary research question was to investigate the severity of deformity and articular damage as well as outcomes in patients undergoing hip arthroscopy compared with open surgery for the treatment of symptomatic slipped capital femoral epiphysis (SCFE) deformity.

Methods: Retrospective review of surgical treatment of symptomatic SCFE deformity with a minimum one-year follow-up. Patients were divided into three groups: the arthroscopic group, surgical hip dislocation(SHD) group and SHD with femoral osteotomy (SHD+ITO) group. Read More