Correction: Chondroitin sulfate-polydopamine modified polyethylene terephthalate with extracellular matrix-mimetic immunoregulatory functions for osseointegration.

Correction for 'Chondroitin sulfate-polydopamine modified polyethylene terephthalate with extracellular matrix-mimetic immunoregulatory functions for osseointegration' by Ya-Min Li et al., J. Mater.

Chondroitin sulfate-polydopamine modified polyethylene terephthalate with extracellular matrix-mimetic immunoregulatory functions for osseointegration.

Optimal integration between the polyethylene terephthalate (PET) graft and host bone is a prerequisite to obtain a satisfactory outcome after graft implantation for ligament reconstruction. Recent studies indicate that complex biosignals including immunoregulation, cell recruitment, and osteogenic differentiation provided by the extracellular matrix (ECM) are conducive to promoting osseointegration. In the present study, a chondroitin sulfate (CS)/polydopamine-modified PET graft was developed to regulate the local immune microenvironment, guide stem cell behavior, and promote new bone formation.

The radiological research for pelvis asymmetry of unilateral developmental dysplasia of the hip in adult.

To investigate whether adult patients with unilateral developmental dysplasia of the hip (UDDH) have pelvic asymmetry and what correlation existing between them. Methods: A total of 100 adult patients with UDDH were enrolled in the retrospective observational study in Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China, between January 2012 and February 2014. The anteroposterior pelvic radiographs were reviewed and the pelvic heights and ischium heights were measured and compared between the affected and non-affected sides to find out the relationship between the pelvic morphology and hip dysplasia.

Anatomical references for tibial sagittal alignment in total knee arthroplasty: a comparison of three anatomical axes based on 3D reconstructed CT images.

Background: This study was designed to analyze three tibial axis reference lines including the anterior tibial cortex (ATC) line, the fibular line (FL), and the anatomical axis of tibia (AAT) line, to determine which line most closely parallels the mechanical axis (MA) of the tibia in the sagittal plane. The clinical relevance of the study is that through finding a reliable landmark on the leg, a surgeon may minimize posterior tibial slope measurement errors thereby and improving the technique for assuring proper alignment of total knee arthroplasty.

Methods: The material for this study included CT scans of the tibia from 85 consecutive patients and 168 knees (78 without osteoarthritis (OA) and 90 knees with OA).

[Cementless total hip arthroplasty for the management of advanced tuberculous coxitis].

Objective: The question of whether a total joint arthroplasty should be attempted in a patient with a current or previous infection of tuberculosis continues to arouse controversy. The aim of this report was to evaluate the clinical outcomes of cementless total hip arthroplasty for the treatment of advanced tuberculosis of hip.

Methods: A total of 14 patients with advanced tuberculosis of hip treated by cementless total hip arthroplasty were retrospectively analyzed.

[Cementless two-staged total hip arthroplasty for chronic periprosthetic infection].

Objective: To determine the clinical outcomes of two-staged cementless revision arthroplasty for the treatment of deep periprosthetic infection after total hip arthroplasty.

Methods: Twenty-three patients with deep periprosthetic infection treated with a standard protocol of two-staged cementless revision hip arthroplasty were enrolled in this study. There were 9 male patients and 14 female patients with an average age of 64 years (range, 52-78 years).

Lateral patellar facetectomy had improved clinical results in patients with patellar-retaining total knee arthroplasty.

To evaluate the functional outcome of a partial lateral facetectomy in patellar-retaining total knee arthroplasty (TKA), we retrospectively analyzed 63 knees of 59 patients who underwent TKA for primary knee osteoarthritis with (32 knees of 30 patients, group 1) or without (31 knees of 29 patients, group 2) patellar facetectomy from September 2005 to July 2007. All cases were followed up for a minimum of 36 months. Although there was no significant differences between the 2 groups in preoperative patellar score, Western Ontario and McMaster Universities score, knee and function scores, postoperatively, group 1 showed more significant improvements in the scores and fewer lateral patellar osteophytes in radiographs than group 2.

Gait analysis of patients with metal-on-metal resurfacing hip arthroplasty compared with big-femoral-head total hip arthroplasty.

Objective: To evaluate gait patterns in patients with metal-on-metal resurfacing hip arthroplasty (RHA) compared with big-femoral-head total hip arthroplasty (BHA) at one year postoperatively.

Methods: In this retrospective comparative observational study, 2 groups of 30 resurfacing hip arthroplasty (RHA) and big-femoral-head total hip arthroplasty (BHA) patients participated between June 2006 and March 2009 in the Sixth Affiliated People's Hospital, Shanghai Jiaotong University, Shanghai, China. Gait parameters and range of motion (ROM) in gait cycles were measured by Vicon gait analysis system and were used to calculate operated/contralateral ratios.

[Posterior longitudinal strip osteotomy of proximal femur in revision total hip arthroplasty].

Objective: To evaluate the treatment and effect of a technique using single femoral posterior longitudinal strip osteotomy in revision total hip arthroplasties.

Methods: Between September 2005 and December 2009, 35 hips of 35 patients underwent a revision total hip arthroplasties (THA) in conjunction with extraction of femoral components. Among them, 23 cases were with uncemented, and 12 cases were with cemented femoral components.

[Acetabular revision with impacted irradiated frozen allografts].

Objective: To analyze the clinical and radiographical result of acetabular revisions with wire mesh, impacted irradiated frozen allografts and cemented cups.

Methods: From February 2006 to January 2009, a total of 20 patients with 21 acetabular revisions were performed with wire mesh, impacted irradiated frozen allografts and cemented cups. Eighteen cases (19 hips) were followed up.

Total knee arthroplasty using computer assisted navigation in patients with severe valgus deformity of the knee.

Background: Severe valgus deformity often has bone defect and laxity of the medial ligamentous, and total knee arthroplasty in severe valgus knee is, in most cases, more challenging for surgeons. The usefulness of a computer assisted navigation system in reestablishing the mechanical axis has been well established. Hence, the interest for surgeons is how the navigation system makes the procedure of total knee arthroplasty with severe valgus knee easier.

Clinical application of gait analysis in hip arthroplasty.

Gait analysis technology can collect a subject's gait data when walking through motion capture systems, force plates, electromyography (EMG), and sensors. It can now be applied to a variety of medical applications. The authors review the recent advances in gait analysis technology and its current clinical application in hip arthroplasty.

[Hip resurfacing arthroplasty for secondary osteoarthritis after developmental dysplasia of hip].

Objective: To study the clinical results of metal on metal hip resurfacing arthroplasty for developmental dysplasia patients.

Methods: From March 2005 to December 2006, 34 cases of developmental dysplasia patients (Crowe I, Crowe II) were attempted to have metal on metal hip resurfacing arthroplasty. There were 29 females (32 hips), 5 males (5 hips).

Treatment of osteonecrosis of the femoral head by percutaneous decompression and autologous bone marrow mononuclear cell infusion.

Objective: To evaluate the clinical efficacy and safety of the treatment of osteonecrosis of the femoral head by percutaneous decompression and autologous bone marrow mononuclear cell (BMCs) infusion.

Methods: 44 hips in 28 patients with avascular necrosis at early stage were treated by percutaneous multiple holes decompression followed by autologous BMCs infusion. Autologous BMCs were concentrated from bone marrow that was taken from the posterior iliac crest of the patient.