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6 ± 6.7mL and 30.5 ± 3.47 mins, respectively. Patients experienced early weight-bearing ability and no fracture reduction loss. Due to Matta criterion for fracture reduction, the results were excellent in 16 cases, good in 9 cases, and fair in 1 case. Due to Majeed functional scoring at the last follow-up, the results were excellent in 17 cases, good in 9 cases. Of 3 patients in whom neurologic impairment was detected preoperatively, 2 achieved complete recovery, and 1 achieved partial improvement postoperatively.

As a new surgical concept in the management of Tile B3 pelvic fractures, HTO seems to provide the following advantages horizontal triangular fixation, minimally invasive incisions, less blood loss, and permitting early weight-bearing ability. However, there still exist several problems regarding the technique and the option of implants.

Level IV, Therapeutic Study.

Level IV, Therapeutic Study.

The aim of this study was to compare the outcomes of dorsal plating versus volar plating with limited dorsal open reduction in the management of AO type C3 distal radius fractures with impacted articular fragments.

Thirty patients who underwent dorsal plating (Group A) (14 females, 16 males; mean age = 56.8 ± 10.1 years) and 28 who underwent volar plating with limited dorsal open reduction (Group B) (12 females, 16 males; mean age = 55.6 ± 17.7 years) for type C3 distal radius fractures with impacted articular fragments between 2006 and 2019 were retrospectively analyzed. The mean follow-up was 14.5 ± 3.2 months in group A and 13.2 ± 2.4 months in group B. The articular step-off, articular gap and joint penetration by screws on the computed tomography scans were used for radiologic evaluation. The functional outcomes were evaluated with range of motion, grip power, Quick Disabilities of the Arm, Shoulder, and Hand (DASH) score, and Mayo wrist score.

No significant difference was found in the step-off distance at 1 year after surgery between the two groups (P < 0.05). The ranges of extension, rotation, and radial and ulnar deviations did not differ between the groups. However, group B had a significantly higher range of flexion in the wrist joint than Group A (P = 0.010). The grip power, DASH score, and Mayo wrist score did not also differ between the groups. Implant removal owing to any discomfort at the operative site was performed in 15 patients (63%) in Group A and 7 patients (28%) in Group B.

Similar clinical results can be obtained by both dorsal plating and volar plating with limited dorsal open reduction in treating type C3 distal radius fractures with impacted articular fragments. However, volar plating with limited dorsal open reduction can provide better wrist flexion with a low incidence of complications associated with implantation.

Level III, Therapeutic Study.

Level III, Therapeutic Study.

The aims of this study were (1) to analyze the factors that may cause loss of reduction (LOR) in pediatric tibia diaphysis and distal third fractures treated with closed reduction and casting (CRC) and (2) to determine the effectiveness of cast index (CI), gap index (GI), and three-point index (TPI) in prediction of LOR.

The patients aged 0-16 years who were admitted to the emergency department between January 2014 and January 2018, with tibia diaphysis or distal third fractures and treated with CRC were included the study. A total of 196 pediatric patients (41 females, 155 males) were retrospectively evaluated. The radiographs on admission were analyzed in terms of fracture type, location of the fracture, presence/location of the fibula fracture as well as initial angulation in both planes, translation, and the time of definitive cast. On radiographs taken after closed reduction and final casting, angulation in the coronal and sagittal planes, amount of translation (%), CI, GI, and TPI were measured. Logistic regression analysis was used to evaluate the risk factors of re-displacement.

Of 196 patients, 46 developed re-displacement (23%). Age (P 0.029), initial translation (P 0.006), post-reduction translation (P 0.001), and post-reduction AP angulation (P 0.002) were found statistically significant. Mean CI and GI were higher in re-displacement group (P 0.033, 0.036, respectively). According to multivariate logistic regression analysis postreduction AP angulation, post-reduction translation, and cast index were found independent risk factors.

One should carefully evaluate patients who underwent CRC due to tibia fracture with CI > 1.02, post-reduction AP angulation > 3.4°, and post-reduction translation > 24.3° in terms of occurrence of re-displacement.

Level IV, Therapeutic Study.

Level IV, Therapeutic Study.

The aims of this study were (1) to investigate the tibial slope (TS) changes following guided growth by the eight-plate and to determine the relationship between the TS change in the sagittal plane and the plate position.

In this retrospective study, children who underwent guided growth by the eight-plate for genu varum or valgum were included. Thirty-eight extremities of 23 children (14 girls and 9 boys; mean age = 9.2 years, age range = 3-17 years) were then divided into two groups according to the plate location in the sagittal plane (anterior or midline). Preoperative and postoperative TS were measured from the medial and lateral tibial plateaus separately.

The mean follow-up was 34.3 (range = 12-96) months. The mean preoperative and postoperative medial TS were 4.05 ± 5.65 and 0.83 ± 3.91 degrees, respectively, in 18 patients in whom anterior epiphyseal plates were placed (P = 0.004). The mean preoperative and postoperative lateral TS were 4.88 ± 5.33 and 0.11 ± 3.34 degrees, respectively, in 18 paLevel IV, Therapeutic Study.

Level IV, Therapeutic Study.

The aim of this study was to evaluate the clinical and radiological outcomes and complications of external fixation use in the treatment of children with displaced supracondylar femoral fractures..

In this retrospective study, 14 children (6 boys, 8 girls; mean age = 7.3 years; age range = 3.9 - 10.3 years) who underwent external fixation for the treatment of a displaced supracondylar femoral fracture from 2010 to 2017 were included. Their medical records were reviewed for general information and surgery details. Postoperative information, such as time to radiographic union, time to regain walking ability, Knee Society Scores (KSS) postoperative score, and KSS functional score were collected. Radiographic images were examined for the measurement of leg length discrepancy and valgus deformity.

The mean follow up was 34 (range = 24-50) months. The mean time to radiographic union was 12.3 (range = 10-16) weeks, and the mean time to regain walking ability was 11.8 (range = 11-13) weeks. Leg length discrepancies were all less than 0.8 cm, and valgus deformity was all limited in 10°. The mean KSS postoperative score was 97.5 (range = 93-100), and the mean KSS functional score was 97.1 (range = 90-100). None of the patients exhibited functional deficiency. Neither deep infection nor refracture was detected postoperatively.

External fixation seems to be an acceptable alternative modality for treatingdisplaced supracondylar femoral fractures in children, with favorable clinical and radiological outcomes as well as a low complication rate.

Level IV, Therapeutic Study.

Level IV, Therapeutic Study.

The aim of the study was to evaluate the single bundle (SB) and double bundle (DB) anterior cruciate ligament (ACL) reconstruction in terms of graft survival, complications, and patient reported functional outcomes in adolescent athletes.

In this retrospective study, 89 elite adolescent athletes who underwent either SB or DB ACL reconstruction were included. All patients were then divided into two groups group 1 including 51 patients with SB ACL reconstruction (31 male, 20 female; mean age = 15.4 ± 1.03 years) and group 2 including 38 patients with DB ACL (30 male, 8 female; mean age = 15.7 ± 1.3 years). Clinical data were obtained, comprising skeletal maturity, sports type, ACL reconstruction technique, Lachman scores, KT-1000™ arthrometer measurement, additional meniscal procedures as well as International Knee Documentation Committee (IKDC) score, Cincinnati score, and graft size.

The mean follow-up period was 53.1 ± 8.6 months in group 1 and 46.4± 9.1 months in group 2 (P = 0.61). GSK1210151A concentration The type of ACL reconstruction technique (SB or DB), gender, skeletal maturity, sports type, additional meniscal procedures and Lachman scores were not associated with the re-rupture of the ACL (P > 0.05). Moreover, ACL reconstruction technique did not effect the rate of re-rupture of an ACL. There were 21 re-ruptures (23.5%) and 11 (12.3%) contralateral ACL ruptures in total. Among 21 reruptures, 12 of them were in the DB group while nine of them in the SB group (P > 0.05). The groups did not differ with respect to age, the injured side, the time from injury to surgery, the postoperative follow-up time, or the preoperative physical examination results KT-1000 device (SSD), Cincinnati score, IKDC objective and subjective score,Lachman test and pivot-shift test).

There are no differences in the re-rupture of an ACL, patient reported outcomes, and complications in adolescent elite players, when either an SB or DB technique is performed.

Level III, Therapeuthic Study.

Level III, Therapeuthic Study.

The aim of this study was to describe the evolution of patients admitted for elective orthopaedic surgery during the immediate post-COVID-19 peak of the pandemic.

This is a multi-center, observational study conducted in 8 high complexity hospitals of Catalonia, one of the highest COVID-19 incidence areas in Spain. We included patients ≥18 years of age undergoing elective surgery (total knee or hip arthroplasty, knee or hip revision arthroplasty, shoulder or knee arthroscopy, hand or wrist surgery, forefoot surgery, or hardware removal) after the COVID-19 peak (between May 5th and June 30th, 2020). The main exclusion criterion was a positive result for SARS-CoV-2 PCR within the 7 days before the surgery. The primary outcomes were postoperative complications within 60 days (+/-30) or hospital readmission due to a COVID-19 infection. Following the recommendations of the International Consensus Group (ICM), elective surgeries were re-started when the nationwide lockdown was lifted. Before the surgery, patientd.

The aim of this study was to determine the effect of platelet-rich plasma (PRP) on bone regenerate consolidation in a rabbit model of distraction osteogenesis.

In this study, 12 male New Zealand rabbits weighing 1600 to 2000 g were used. All the rabbits were randomly divided into two groups (n = 6 per group) PRP group and control group. A two-ring, circular external fixator was applied to the right tibia of each rabbit in both groups. After corticotomy, all the tibiae were distracted at a rate of 0.5 mm/day for 20 days. PRP was injected to the osteotomy sites on the 7th, 14th, and 21st days postoperatively. Mineral density of the new bone tissue formed in the distraction zone was measured using quantitative computed tomography in the 3rd, 4th, and 5th weeks. At the end of the 6th week, the animals were sacrificed, and the specimens were evaluated biomechanically and histologically.

Microcomputed tomography assessment showed significant bone mineral density increase from the 3rd to the 6th week (62.3% and 43.