Background: Bone defects pose a significant orthopedic challenge, impacting millions of patients worldwide annually. In our prior research, we innovatively applied magnetron sputtering (MSP) technology to prepare nano thin amorphous tantalum (Ta) coatings on titanium alloy (Ti - 6Al 4V, TC4) substrate, achieving exceptional interfacial adhesion, comprehensive coverage, and notable biological attributes. The purpose this study is investigate the clinical outcomes TC4-based Ta-coated implants...

To test the biomechanical properties of 3D printed tantalum and titanium porous scaffolds.Four types scaffolds with four alternative pore diameters, #1 (1000-700 μm), #2 (700-1000 #3 (500-800 #4 (800-500 were molded by selective laser melting technique, tested scanning electronic microscope, uniaxial-compression tests, Young's modulus tests; they compared same size pig femoral bone scaffolds.Under equivalent stress scaffold was 411 ± 1.43 MPa, which significantly larger than (P < 0.05). 2.61...

Objective Total knee arthroplasty (TKA) is one of the most universal and effective means for treating terminal stage osteoarthritis (OA) knee. Accurate intramedullary guide femur basis distal femoral cuts. Determining surgical transepicondylar axis (sTEA) key to reconstruction rotational alignment, because correct alignment can place component in right position, balance flexion gap so that inner outer tension equal, get stability during process knee, enhance quality life patients. With...

Background: Long-term outcomes of current clinical interventions for osteochondral defect are less than satisfactory. One possible reason is an ignorance the interface structure between cartilage and subchondral bone, calcified zone (CCZ). However, importance natural CCZ in defects has not been directly described. Purpose: To explore feasibility fabricating trilayer scaffold containing role repair process. Study Design: Controlled laboratory study. Methods: The was prepared by cross-linking...

Objective To explore the feasibility of 3D printed customized guides assisting precise drilling Kirschner wires in subtalar joint arthrodesis. Methods We retrospectively reviewed data 29 patients (30 joints) who underwent arthrodesis between 1 July 2013 and 31 December 2017. The were designed on a full‐scale polylactic acid model made from computed tomography (CT) by Model Intestinal Microflora Computer Simulation (MIMICS) software, which manufactured printing technology. A total 14 joints...

To accurately drill the Kirschner wire with help of 3D-printed personalized guide and to evaluate feasibility 3D technology as well outcome surgery.Patients' DICM data ankle via CT examinations were introduced into MIMICS software design guides. Two 2mm wires drilled guides; C-arm fluoroscopy was used confirm position before applying cannulated screws. The patients who underwent arthrodesis divided two groups. experimental group adopted guides, while control received traditional method,...

Background Three-dimensional (3D) reconstruction has been used for various diseases, but few reports have described its application in pelvic after removal of giant chondrosarcoma. Case describing the clinical personalized 3D-printed titanium implants are needed future reference. presentation: We herein describe a 29-year-old woman with chondrosarcoma treated 3D implant. The surgery was successful, and patient recovered significant pain relief good functional recovery surgery. No...

Fractures of the radial head account for 33% elbow fractures. More and more studies have found that plays an important role in normal function joint, many complications will occur after resection head. Accurate treatment fractures is crucially important. At this stage, commercialized prosthesis fixed size commonly used replacement, but mismatch material problems resulted complications. The three-dimensional (3D) printed porous tantalum has good biocompatibility, conducive to bone ingrowth,...

To evaluate the midterm results of cementless S-ROM modular femoral stem used with subtrochanteric transverse shortening osteotomy for treatment high hip dislocation secondary to pyogenic arthritis.We retrospectively reviewed data 49 patients (49 hips) an average infection quiescent period 37.4 years who underwent total arthroplasty (THA) simultaneous from July 2008 June 2012. There were 23 men and 26 women a mean age 44.3 at time surgery. The following clinical outcomes evaluated: Western...

With the development of three-dimensional printing (3DP) technology, patient-specific instrumentation (PSI) has been widely applied in total knee arthroplasty (TKA). The purpose this study was to compare gait parameters patients with 3DP personalized guide-assisted and standard TKA.Retrospective analysis advanced OA cases our hospital between June 2017 2018 conducted. 30 received TKA (group A), 60 who underwent during same period were group B C according computed tomography (CT) measurement...

Objective: Scaphoid and lunate fractures have a relatively high incidence rate. Traditional carpectomy carpal arthrodesis in the treatment of osteonecrosis will lead to many complications. Three-dimensional (3D) printed tantalum has good biocompatibility can be designed match patient's personalized anatomical structure. This study aims investigate function prosthesis-related conditions after bone replacement using 3D prostheses. Methods: From July 2020 January 2022 at our center, seven...

Objective. To study the efficacy of arthroscopy for treating symptomatic bone cysts foot and ankle through follow-up patients to further explore application value 3D printing technology in this treatment. Methods. Twenty-one with who underwent arthroscopic surgery our Center from March 2010 December 2018 were enrolled, including 11 experimental group 10 control group. For group, C-arm fluoroscopy was used intraoperatively confirm positioning cysts; a model lesion tissue 3D-printed...

Abstract Radiographs are widely used to measure distal femoral valgus cut angle (VCA) in total knee arthroplasty (TKA), but its accuracy is controversial. This study three-dimensional (3D) reconstruction models verify the of VCA measurements on radiographs, and explore correlation with hip–knee–ankle (HKA) lateral bowing (FBA). A 444 osteoarthritis knees patients from August 2016 June 2018 was included retrospectively. On two-dimensional (VCA-2D) measured between mechanical axis anatomical...

Abstract The impact between acetabulum and femoral neck is another possible mechanism of fracture. Direct trauma the greater trochanter may not be able to fully explain underlying In this study, we sought investigate whether anterior femoroacetabular impingement are associated with fractures. A total 36 patients fracture who had undergone hip arthroplasty or hemiarthroplasty were included in study. These divided into 2 groups: labrum tear group normal group. Patients’ age, gender, body mass...

To explore the gait trajectory characteristics of patients after total knee arthroplasty (TKA) assisted by three-dimensional (3D) printing navigation template.Twenty female (20 knees) with osteoarthritis who were treated TKA 3D template between February 2017 and 2018 selected as group. The 50-69 years old, an average age 57.2 years. disease duration was 4-7 years, 5.6 classified Kellgren-Lawrence Ⅲ level in 5 cases Ⅳ 15 cases. preoperative hip-knee-ankle angle (HKA) (170.8±5.6)°. All varus...

&amp;nbsp;In foot and ankle surgery, internal fixation was crucial to maintain the stability of bony structure, bone grafting material is commonly used treat defects. With rapid development three-dimensional (3D) printing technology, new advances were made in these two aspects. In this study, digital image correlation method (DICM) data patient&amp;rsquo;s via computed tomography (CT) examination obtained imported into a series software. The engineer cooperated with surgeon design customized...

The mortality of conservative treatment and the risk resulting from operation for elderly patients with femoral intertrochanteric fractures are high. Safety in perioperative period quicker recovery should be placed at top priority hip fractures. We reported a case 109-year-old female patient fracture who has undergone hemiarthroplasty our center recently. With sciatic nerve lateral cutaneous block anesthesia, she was offered artificial head replacement lumbar plexus after sufficient...