Notes

Trichoblastoma: The Successive Group of 349 Intermittent Instances Assessed simply by Ackerman Subtypes.
To explore the application value of lithotomy position in the treatment of tibial shaft fracture with closed reduction and interlocking intramedullary nail fixation.

The clinical data of 78 patients with tibial shaft fractures treated with closed reduction and interlocking intramedullary nail fixation between January 2015 and May 2018 were retrospectively analyzed. Among them, 33 patients were treated with lithotomy position (trial group) and 45 patients were treated with traditional supine position (control group). There was no significant difference between the two groups in general data such as gender, age, the cause of injury, the interval between injury and admission, the interval between injury and operation, and fracture type and site (
>0.05). The operation time, intraoperative blood loss, intraoperative fluoroscopy times, the number of patients with open reduction, postoperative incision infection, and fracture healing were recorded. Pain visual analogue scale (VAS) score and Harris score weafter operation, the VAS score was lower in the trial group than in the control group, and the Harris scores of knee joint and ankle joint were higher in the trial group than in the control group, and the differences were significant (
<0.05).

Application of lithotomy position in closed reduction and interlocking intramedullary nail fixation for tibial shaft fracture is favorable for fracture reduction, with less bleeding, shorter operation time, and fewer fluoroscopy.
Application of lithotomy position in closed reduction and interlocking intramedullary nail fixation for tibial shaft fracture is favorable for fracture reduction, with less bleeding, shorter operation time, and fewer fluoroscopy.
To explore the safety and effectiveness of quadriceps snip in complex total knee arthroplasty (TKA).

A clinical data of 19 cases (29 knees) with complex TKA assisted with quadriceps snip between January 2016 and May 2017 were retrospectively analyzed. There were 9 males (13 knees) and 10 females (16 knees). selleck compound The age of patients ranged from 34 to 66 years (mean, 50.2 years). Four patients (8 knees) were ankylosing spondylitis, 5 patients (7 knees) were rheumatoid arthritis, and 10 patients (14 knees) were knee osteoarthritis. The average disease duration was 10.9 years (range, 8-15 years). There were 12 knees of Kellgren-Lawrence grade Ⅲ and 17 knees of Kellgren-Lawrence grade Ⅳ. The range of motion (ROM) of knee was (19.86±7.23)°. The clinical and function scores of knee society score (KSS) were 47.86±11.26 and 15.52±11.21, respectively. Postoperative complications, ROM, KSS scores, extensor lag, and prosthesis loosening were observed to evaluate the effectiveness.

All incisions healed by first intentiontella tendon tearing, patella fracture, and quadriceps tendon injury. The surgical technique of Krackow tendon suture can effectively guarantee early rehabilitation without occurrence of other complications.
To explore the changes of bone and risk of micro-fracture in femoral head after removal of cannulated screws following femoral neck fracture healing under the impact force of daily stress.

A total of 42 specimens of normal hip joint were collected from 21 adult fresh cadaveric pelvic specimens. Wiberg central-edge (CE) angle, bone mineral density, diameter of femoral head, neck-shaft angle, and anteversion angle of femoral neck were measured. Then, the 3 cannulated screws were implanted according to the AO recommended method and removed to simulate the complete anatomical union of femoral neck fracture. The morphology of screw canal in the femoral head was observed by CT. Finally, the specimens were immobilized vertically within the impact device in an upside-down manner, and the femoral heads were impacted vertically. Every specimen was impacted at 200, 600, and 1 980 N for 20 times with the impacting device. After impact, every specimen was scanned by CT to observe the morphology changes of screw canal acted by daily activities after removal of cannulated screws for femoral neck fractures, and such micro-fractures are associated with decreased bone density of the femoral head.
The micro-fractures in the femoral head may occur when the femoral head is impacted by daily activities after removal of cannulated screws for femoral neck fractures, and such micro-fractures are associated with decreased bone density of the femoral head.
To compare the effectiveness of proximal femoral nail anti-rotation (PFNA) combined with minimally invasive percutaneous plate osteosynthesis (MIPPO) and Intertan intramedullary nail fixation by closed reduction in the treatment of AO/Orthopaedic Trauma Association (AO/OTA) type 31-A3.3 intertrochanteric fracture with incomplete lateral wall.

The clinical data of 54 patients with AO/OTA type 31-A3.3 intertrochanteric fracture who met the selection criteria and were admitted between January 2012 and January 2018 were retrospectively analyzed. According to different surgical methods, the patients were divided into group A (24 cases with lateral wall reconstruction by MIPPO combined with PFNA internal fixation) and group B (30 cases with Intertan intramedullary nail fixation by closed reduction only). There was no significant difference between the two groups (
>0.05) in terms of gender, age, side of injury, cause of injury, and combined medical diseases. The operation time, intraoperative blood loss, t failure after MIPPO reconstruction with lateral wall combined with PFNA fixation was lower, the time to weight-bearing was earlier, and the postoperative function was better.
For the AO/OTA type 31-A3.3 intertrochanteric fracture with incomplete lateral wall, compared with the closed reduction Intertan intramedullary nail fixation, the incidence of internal fixation failure after MIPPO reconstruction with lateral wall combined with PFNA fixation was lower, the time to weight-bearing was earlier, and the postoperative function was better.
To develop an artificial intelligence based three-dimensional (3D) preoperative planning system (AIHIP) for total hip arthroplasty (THA) and verify its accuracy by preliminary clinical application.

The CT image database consisting of manually segmented CT image series was built up to train the independently developed deep learning neural network. The deep learning neural network and preoperative planning module were assembled within a visual interactive interface-AIHIP. After that, 60 patients (60 hips) with unilateral primary THA between March 2017 and May 2020 were enrolled and divided into two groups. The AIHIP system was applied in the trial group (
=30) and the traditional acetate templating was applied in the control group (
=30). There was no significant difference in age, gender, operative side, and Association Research Circulation Osseous (ARCO) grading between the two groups (
>0.05). The coincidence rate, preoperative and postoperative leg length discrepancy, the difference of bilateral femoral offsets, the difference of bilateral combined offsets of two groups were compared to evaluate the accuracy and efficiency of the AIHIP system.
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