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J Biomech 2022 Jun 22;141:111207. Epub 2022 Jun 22.

Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA; Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA. Electronic address:

While correction of dysplastic acetabular deformity has been a focus of both clinical treatment and research, concurrent femoral deformities have only more recently received serious attention. The purpose of this study was to determine how including abnormalities in femoral head-neck offset and femoral version alter computationally derived contact stresses in patients with combined dysplasia and femoroacetabular impingement (FAI). Hip models with patient-specific bony anatomy were created from preoperative and postoperative CT scans of 20 hips treated with periacetabular osteotomy and femoral osteochondroplasty. Read More

Int Orthop 2022 Jun 28. Epub 2022 Jun 28.

Postgraduate Program of the Instituto de Assistência Médica ao Servidor Público Estadual (IAMSPE), São Paulo, SP, Brazil.

Purpose: This study investigated the incidence of AVN in patients with cerebral palsy who underwent a hip reconstruction surgery (soft tissue release, femur and pelvic osteotomies) and its impact on quality of life.

Methods: Retrospective study, with clinical and radiographic analysis of 104 patients (128 hips) GMFCS IV and V with a minimum two year follow-up. Reimers migration percentage, the amount of abduction, acetabular index, and the neck-shaft angle were collected before and after surgery. Read More

J Plast Reconstr Aesthet Surg 2022 May 1. Epub 2022 May 1.

Plastic and Reconstructive Surgery, La Paz University Hospital, Madrid Spain.

Background: Hip joint reconstruction following intra-articular resection of the femoral head in children is a highly demanding challenge. We aimed to describe the outcomes of hip reconstruction in paediatric patients with a free fibular epiphyso-diaphyseal flap based on both anterior tibial and peroneal vessels within a radius allograft.

Patients And Methods: Four patients underwent hip reconstruction following this technique between 2013 and 2020 at La Paz University Hospital (Madrid, Spain). Read More

Strategies Trauma Limb Reconstr 2022 Jan-Apr;17(1):32-37

Department of Orthopaedic Surgery, University of KwaZulu-Natal, Durban, South Africa.

Aim: To evaluate the results in terms of correction and complications from gradual correction with a computer-assisted hexapod circular external fixator in a mixed cohort of children with Blount's disease.

Materials And Methods: A retrospective review was performed of the correction and complications of 19 children (25 limbs) with recurrent infantile (IBD) and late-onset Blount's disease (LOBD) treated by gradual correction with a hexapod external fixator. The correction was measured by the medial proximal tibial angle (MPTA), anatomic posterior proximal tibial angle (aPPTA) and anatomic tibio-femoral angle (TFA). Read More

Strategies Trauma Limb Reconstr 2022 Jan-Apr;17(1):26-31

Department of Orthopedics, University of Utah, Salt Lake City, Utah, United States of America.

Objective: There are several alternative methods for accomplishing epiphysiodesis of the longer limb to address limb length discrepancy (LLD). Consensus is lacking regarding the optimal timing of the intervention and which method is most efficacious. We reviewed a large group of patients with anisomelia treated by tethering with tension band plates (TBP) and who had attained skeletal maturity. Read More

Zhongguo Gu Shang 2022 Jun;35(6):572-7

Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210000, Jiangsu, China.

Objective: To identify types of acetabular dysplasia, select the most suitable acetabular plasty, and analyze indications and efficacy of three types of acetabular plasty in treating dislocation of hip joint in children with cerebral palsy by 3D printing technology.

Methods: From July 2019 to December 2019, 7 children with cerebral palsy with hip dislocation were treated with acetabular plasty assisted by 3D printing technology, including 3 males and 4 females, aged from 3 from 8 years old;3 patients on the left side, 2 patients on the right side, and 2 patients on both sides. Subluxation of hip joint occurred in 2 patients and dislocation of hip joint occurred in 5 patients. Read More

Acta Ortop Bras 2022 15;30(2):e245479. Epub 2022 Apr 15.

Universidade de São Paulo, Medical School, Hospital das Clínicas, Institute of Orthopedics and Traumatology (IOT-HCFMUSP), Trauma Group, SP, Brazil.

Objective: To assess the complications in patients with severe slipped capital femoral epiphysis treated with the Dunn or modified Dunn procedure from 2012 to 2018 at the Institute of Orthopedics and Traumatology, Medical School, Universidade de São Paulo.

Methods: Analysis of medical records, preoperative and postoperative radiographs with at least one year of radiographic follow-up of patients with severe slipped capital femoral epiphysis.

Results: We reviewed the complications in 19 operated cases from 2012 to 2018, out of which 36. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2022 Jun;36(6):722-728

Department of Orthopedics, the Affiliated Hospital of Xuzhou Medical University, Xuzhou Jiangsu, 221006, P. R. China.

Objective: To investigate the accuracy of the modified Akagi line which referenced the patellar tendon at the attachment and the geometrical center point of the tibial osteotomy surface for tibial rotational alignment.

Methods: Between July 2021 and December 2021, 72 patients who underwent three-dimension (3D) CT for varus osteoarthritis knees were enrolled. Among 72 patients, 18 were male and 54 were female with a mean age of 64. Read More

J Arthroplasty 2022 Jun 14. Epub 2022 Jun 14.

Department of Orthopedics, General Hospital of Chinese PLA, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China.

Background: This study aimed to determine the differences in survivorship, clinical function, and complications among patients who have Hartofilakidis Type C1 or C2 developmental dysplasia of the hips and underwent total hip arthroplasty (THA) with cementless implants.

Methods: This retrospective study identified 84 Hartofilakidis Type C hips that underwent THA between 2002 and 2011 with a minimum 10-year follow-up (mean, 13 years, range, 10 to 19 years). Survivorship, latest Harris Hip Scores and satisfaction levels, radiographic outcomes (eg, implant stability, rate and length of subtrochanteric shortening transverse osteotomy, leg-length discrepancy, cup position, and orientation), as well as complications (eg, dislocation, periprosthetic fracture, periprosthetic joint infection) were compared to analyze the differences between Hartofilakidis C1 and C2 hips. Read More

J Orthop Trauma 2022 06;36(6):271-279

Department of Orthopaedic Surgery, Boston University Medical Center, Boston, MA.

Objectives: To assess the operative results of femoral neck fractures (FNFs) in young adults in a large multicenter series, specifically focusing on risk factors for treatment failure.

Design: Large multicenter retrospective cohort series.

Setting: Twenty-six North American Level 1 trauma centers. Read More

Int Orthop 2022 Jun 14. Epub 2022 Jun 14.

Department of Orthopaedic Surgery, University Hospital of Regensburg, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany.

Purpose: Literature reveals good to excellent data concerning patient satisfaction, as well as long-term outcomes after high tibial osteotomy (HTO). These results might be influenced by changes of knee kinematics through the procedure. However, exact influence of HTO on tibiofemoral kinematics remains unknown so far. Read More

SICOT J 2022 14;8:23. Epub 2022 Jun 14.

Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, 103 Grande Rue de la Croix Rousse, 69004 Lyon, France - Univ Lyon, Claude Bernard Lyon 1 University, IFSTTAR, LBMC UMR_T9406, 69622 Lyon, France.

Introduction: Patella instability post total knee arthroplasty (TKA) is a rare complication. Tibial tubercle osteotomy (TTO) with medial patellofemoral ligament reconstruction (MPFLr) has not been well described for this indication. This paper describes a surgical technique to address the unique challenges faced when performing TTO and MPFLr in the prosthetic knee. Read More

JBJS Essent Surg Tech 2022 Jan-Mar;12(1). Epub 2022 Feb 16.

Hip Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi," Italian Hospital of Buenos Aires, Buenos Aires, Argentina.

Revision total hip arthroplasty in the setting of extensive femoral bone loss poses a considerable challenge to the adult reconstructive surgeon. When the proximal femoral bone stock is deficient or absent, there are few options for reconstruction. In such cases, treatment options include distal cementless fixation (either modular or nonmodular), impaction bone grafting (IBG), a megaprosthesis, or even an allograft-prosthesis composite. Read More

Clin Orthop Surg 2022 Jun 13;14(2):205-212. Epub 2022 Apr 13.

Central Institute of Orthopaedics, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.

Background: Total Hip Arthroplasty remains the standard treatment protocol for patients with neglected traumatic dislocations of the hip with arthritis. A total hip arthroplasty needs to be frequently combined with a subtrochanteric shortening femoral osteotomy to aid in the reduction of the hip joint in such cases. Still long-term stable implant fixation, rigid construct, and favorable functional outcome remain a challenge. Read More

Curr Med Sci 2022 Jun 8;42(3):577-583. Epub 2022 Jun 8.

Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.

Objective: This study aimed to investigate the correlation between the surface area ratio of medial tibial plateau (MTP) to lateral tibial plateau (LTP) and the mechanical tibiofemoral angle (mTFA).

Methods: Lower limb computed tomography (CT) images were collected at our hospital. Then, the original CT data were analyzed and reconstructed using medical image processing software. Read More

Arthroplast Today 2022 Aug 4;16:130-139. Epub 2022 Jun 4.

Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.

Background: The aim of this study was to describe outcomes of patients who had undergone medial patellofemoral ligament reconstruction (MPFLr) to treat patellofemoral instability (PFI) following total knee arthroplasty (TKA).

Material And Methods: This is a retrospective case series of consecutive patients treated for PFI after TKA. Patients were included if they had radiographic documentation of patella dislocation or subluxation and component position was adequate. Read More

Arthroplast Today 2022 Aug 3;16:107-111. Epub 2022 Jun 3.

Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA, USA.

The extended trochanteric osteotomy is the workhorse for removal of well-fixed femoral stems during total hip revision arthroplasty. Despite its reliable performance in exposing the implants for removal and accessing the femoral canal, significant complications can occur. Though these complications are rare, trochanteric nonunion, trochanteric escape, and femoral implant subsidence can have a significant negative impact on gait mechanics and patient outcome. Read More

Arch Orthop Trauma Surg 2022 Jun 8. Epub 2022 Jun 8.

Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.

Introduction: To compare bone union after medial closing wedge distal femoral osteotomy (MCWDFO) with that after lateral closing wedge distal femoral osteotomy (LCWDFO) using a novel scoring system.

Materials And Methods: The data of 30 patients who received biplanar MCWDFO for valgus knees (MCWDFO group) were retrospectively examined and compared to that of 22 patients (25 knees) who underwent biplanar LCWDFO via a double-level osteotomy (DLO) for varus knees (LCWDFO group). The progression of bone union of the transverse osteotomy plane in the femur was assessed using a newly developed scoring system using radiographs taken immediately after surgery and 3 and 6 months postoperatively. Read More

J Pediatr Orthop 2022 Jul 10;42(6):e565-e569. Epub 2022 Mar 10.

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

Background: A subset of patients successfully treated for developmental dysplasia of the hip (DDH) as infants have symptomatic acetabular dysplasia at skeletal maturity leading to periacetabular osteotomy (PAO). The purpose of this study was to compare femoral and acetabular morphology in PAO patients with late acetabular dysplasia after previous treatment for DDH with PAO patients who do not have a history of DDH treatment.

Methods: A single surgeon's patients who underwent PAO between 2011 and 2021 were retrospectively reviewed. Read More

Knee Surg Sports Traumatol Arthrosc 2022 Jun 6. Epub 2022 Jun 6.

Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.

Purpose: To verify whether femoral anteversion measured by the surgical transepicondylar axis (S-FA) is a reliable parameter for evaluating femoral rotational deformities and to provide an indication for derotational distal femoral osteotomy (DDFO) in patients with patellar dislocation.

Methods: Ninety patients with recurrent patellar dislocation and 90 healthy individuals were enrolled. The S-FA, the femoral anteversion measured by posterior condylar reference line (P-FA), the length of posterior femoral condyles, and the posterior condylar angle (PCA) were assessed by CT images. Read More

Arthroscopy 2022 Jun;38(6):1954-1955

University of Amsterdam.

Knee osteotomy is a valuable treatment option for younger knee osteoarthritis patients. Improved surgical techniques, including double-level osteotomies to address femoral and tibial malalignment, have led to reappreciation of this joint-sparing alternative to knee arthroplasty. Yet, postoperative ability to resume sport and work at the desired level needs further improvement. Read More

Arthroscopy 2022 Jun;38(6):1916-1918

A medial opening wedge high tibial osteotomy is a cost-effective procedure for younger patients with symptomatic medial compartment knee arthritis. A high rate of success can be expected, but excessive postoperative joint line obliquity is associated with inferior clinical outcomes. If preoperative planning predicts that the postoperative medial proximal tibial angle, the medial angle between the tibial anatomical axis and the joint line of the proximal tibia, will exceed 95°, a surgeon should consider performing a double-level osteotomy (combined proximal tibial and distal femoral osteotomies). Read More

Arthroscopy 2022 Jun;38(6):1867-1868

Femoral torsion is an important measure in patients with femoroacetabular impingement presenting with limited hip range of motion. However, femoral torsion may be measured using computed tomography or magnetic resonance imaging and on axial or axial-oblique sequences. Recent research shows that femoral torsion measurements differ based on the magnetic resonance imaging sequences on which this parameter is measured. Read More

Arthroscopy 2022 Jun;38(6):1764-1765

The Steadman Clinic & Steadman Philippon Research Institute, Vail, Colorado, U.S.A.

Acetabular dysplasia results in abnormal forces across the hip joint and can result in both labral tears and cartilage degeneration. A continuum exists from classic dysplasia to normal acetabular morphology. Diagnosis is aided by several radiographic measurements and parameters including a lateral center edge angle of less than 20°, an anterior center edge angle of less than 20°, a Sharp's angle of greater than 42°, and a Tonnis angle of greater than 10°, or version abnormalities. Read More

Orthop Traumatol Surg Res 2022 Jun 2:103344. Epub 2022 Jun 2.

Service de chirurgie orthopédique pédiatrique, Hôpital Necker Enfants Malades, Université Paris Descartes, 149, rue de Sèvres, 75015 Paris, France. Electronic address:

Introduction: The results of hip reconstruction surgery are known for non-walking (GMFCS IV and V) and walking (GMFCS I and II) patients. Few studies deal with GMFCS III patients in isolation. Their intermediate functional status can be deteriorated by asymmetrical contractures, hip dislocation, multi-level deformities of the lower limbs, leading to motor function degradation, and possibly losing their ability to walk. Read More

J Orthop Surg Res 2022 Jun 3;17(1):301. Epub 2022 Jun 3.

Department of Orthopaedics, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, 250014, Shandong, China.

Background: We undertook a comparative biomechanical study of type B1 fractures around femoral prostheses following cemented hip arthroplasty using the Ortho-Bridge System (OBS) and a locking compression plate/locking attachment plate structure (LCP + LAP). We aimed to investigate the biomechanical characteristics and advantages of the OBS compared with LCP + LAP when treating this fracture type.

Methods: An OBS fixation model was designed based on OBS and LCP + LAP fixation characteristics. Read More

Zhonghua Wai Ke Za Zhi 2022 Jun;60(6):635-640

Center of Knee Joint Surgery, Henan Luoyang Orthopedic-Traumatological Hospital(Henan Orthopedic Hospital), Luoyang 471002, China.

Unicompartmental knee arthroplasty (UKA) is an effective treatment for end-stage anteromedial osteoarthritis of the knee. Medial tibial plateau fracture or femoral condyle fracture may occur after UKA, and its treatment is very challenging. The causes leading to this complication include: surgical technique errors, such as the weakening of posterior cortical strength of the tibial platform during operation, the reduction of bone mass due to too much tibial osteotomy, and the stress concentration in the bone bed due to bad alignment of the prosthesis, etc. Read More

Semin Musculoskelet Radiol 2022 Jun 2;26(3):242-257. Epub 2022 Jun 2.

Division of Musculoskeletal Radiology, Department of Radiology, NYU Grossman School of Medicine, New York, New York.

Total hip arthroplasty and hip preservation surgeries have substantially increased over the past few decades. Musculoskeletal imaging and interventions are cornerstones of comprehensive postoperative care and surveillance in patients undergoing established and more recently introduced hip surgeries. Hence the radiologist's role continues to evolve and expand. Read More

Comput Methods Programs Biomed 2022 Jun 29;221:106923. Epub 2022 May 29.

Pain Department, Changji State Hospital of Traditional Chinese Medicine, Changji, China.

Objective: To observe the cartilage repair of the medial compartment and the biomechanical changes of the lower extremities after single-plane high tibial osteotomy of distal tibial tuberosity (DTT-HTO).

Methods: A total of 30 patients, including 11 males and 19 females, who underwent DTT-HTO with arthroscopic operation in our hospital from January 2020 to January 2021 and underwent arthroscopic exploration again during the second operation for internal fixation were enrolled. There were 32 knees, including 13 left knees and 19 right knees. Read More

Spine Deform 2022 Jun 2. Epub 2022 Jun 2.

Spinal Unit, Pediatric Orthopaedic Surgery and Traumatology Department, Hospital Infantil Universitario Niño Jesús, Av. de Menéndez Pelayo, 65, 28009 JCR, Madrid, Spain.

Purpose: Limb-lengthening surgery to treat short stature has undergone great development in recent years with the use of intramedullary telescopic nails (TIMNs). A limited number of studies have explored the impact of lower limb lengthening on the spine, though their conclusions are not consistent. The aim of this research is to analyze changes in spinopelvic sagittal alignment and balance after lower limb lengthening in achondroplastic patients. Read More