ObjectiveTo investigate the short-term effectiveness of femoral neck system (FNS) in the treatment of femoral neck fracture.MethodsThe clinical data of 34 patients with femoral neck fracture admitted between January 2019 and April 2020 who met the selection criteria were retrospectively analyzed and divided into group A (19 patients were treated with conventional cannulated screw internal fixation) and group B (15 patients were treated with FNS internal fixation) according to the different methods of internal fixation. There was no significant difference between the two groups in general data such as gender, age, affected side, cause of injury, fracture type, and time from injury to operation (P>0.05). The operation time, intraoperative blood loss, fluoroscopy frequency, and fracture healing time were recorded and compared between the two groups. X-ray film and CT examinations were performed postoperatively to evaluate fracture reduction and internal fixation, and the shortening of the femoral neck on the affected side was measured compared with that on the healthy side. The Harris score was used to evaluate hip function.ResultsThere was 1 unsatisfied reduction case in groups A and B respectively, the rest of the patients in both groups were obtained satisfied reduction. There was no significant difference in the quality of reduction between the two groups (Z=–0.195, P=0.854). There was no significant difference in operation time between the two groups (t=0.649, P=0.064). The intraoperative blood loss in group A was significantly less than that in group B, and the fluoroscopy frequency was significantly more than that in group B, with significant differences (P<0.05). Except for 1 case in group A with screw out at 3 months after operation and no obvious callus formation, all fractures in the two groups reached clinical healing, and there was no significant difference in fracture healing time between the two groups (t=–0.127, P=0.899). There was no necrosis of femoral head in the two groups. At last follow-up, there were 4 cases of femoral neck shortening in group A and 2 cases in group B. The hip function of both groups recovered well, and there was no significant difference in Harris score at last follow-up (t=0.956, P=0.346).ConclusionThe treatment of femoral neck fracture using FNS has less trauma. Compared with cannulated screw internal fixation, it can reduce the intraoperative fluoroscopy frequency and obtain satisfactory short-term effectiveness.
ObjectiveTo compare the effectiveness of the femoral neck system (FNS) and inverted triangle cannulated screws (ITCS) for the treatment of Pauwels type Ⅲ femoral neck fractures.MethodsThe clinical data of 59 patients with Pauwels type Ⅲ femoral neck fractures treated between May 2019 and November 2020 were retrospectively analysed. The patients were divided into FNS group (28 cases) and ITCS group (31 cases) according to the different internal fixation. There was no significant difference in gender, age, affected side, body mass index, cause of injury, smoking history, alcohol abuse history, Pauwels angle, Garden classification, AO/Orthopaedic Trauma Association (AO/OTA) classification, and time from injury to operation between the two groups (P>0.05). The operation time, incision length, intraoperative blood loss, extra assisted reduction procedures (Kirschner wire prying reduction or open reduction), hospitalization stay, and early complications were recorded and compared between the two groups. Garden index and Haidukewych score were used to evaluate fracture reduction. Fracture healing time, lateral thigh irritation, time of partial or total weight-bearing postoperatively, shortening length and degree of femoral neck, change of caput-collum-diaphysis (CCD) angle (the difference of CCD angle between immediate after operation and last follow-up), incidence of osteonecrosis of femoral head and revision surgery were recorded and compared between the two groups. Hip joint function were evaluated by Harris score.ResultsThe operation time of FNS group was significantly shorter than ITCS group, and the incision length was significantly longer than ITCS group (P<0.05). There was no significant difference in intraoperative blood loss, assisted reduction, Garden index, Haidukewych score, and hospitalization stay between the two groups (P>0.05). All the incisions healed by first intention. There were 2 deep vein thrombosis in the FNS group and 1 pulmonary infection and 1 deep vein thrombosis in the ITCS group. No significant difference was found in the incidence of early postoperative complications (7.1% vs. 6.5%) between the two groups (P=1.000). Patients in both groups were followed up 3-14 months, and there was no significant difference in follow-up time between the two groups (t=–0.553, P=0.582). The fracture healing time, Harris score, and the partial weight-bearing time after operation of the FNS group were significantly better than those of the ITCS group (P<0.05). However, there was no significant difference in total weight-bearing time between the two groups (Z=–1.298, P=0.194). No lateral thigh irritation was found in the FNS group, while 10 patients in the ITCS group had lateral thigh irritation, and the incidence between the two groups (0 vs. 32.3%) was significant (P=0.001). At last follow-up, the shortening length and degree of femoral neck and the change of CCD angle in FNS group were significantly less than those in ITCS group (P<0.05). There was no patient with osteonecrosis of femoral head or reoperation in the FNS group, while 4 patients in the ITCS group underwent reoperation (including 2 cases of osteonecrosis of the femoral head). However, the incidences (0 vs. 6.5%; 0 vs. 12.9%) between the two groups were not significant (P=0.493; P=0.114).ConclusionUsing FNS to treat Pauwels type Ⅲ femoral neck fracture is simple as well as able to reduce the shortening of the femoral neck and the change of the CCD angle. Also, FNS is conducive to the recovery of hip joint function, which should be considered as a new choice for the treatment of young femoral neck fracture patients.
ObjectiveTo investigate the short-term effectiveness and advantages of the orthopedic robot-assisted femoral neck system (FNS) fixation in the treatment of fresh femoral neck fractures compared with the traditional manual operation. Methods A clinical data of 74 patients with fresh femoral neck fractures, who had undergone internal fixation with FNS between April 2020 and September 2021, was retrospectively analyzed. Among them, there were 31 cases of TiRobot-assisted operation (trial group) and 43 cases of traditional manual operation (control group). There was no significant difference between groups (P>0.05) in terms of gender, age, cause of injury, time from injury to operation, fracture side and type. The fracture fixation time (intraoperative fracture reduction to the end of suture), invasive fixation time (incision of internal fixation to the end of suture), the number of placing key-guide needle, incision length, intraoperative blood loss, fracture healing, and Harris score of hip function were recorded and compared. Results All operations were performed with no neurovascular injury or incision complications. The invasive fixation time, intraoperative blood loss, the number of placing key-guide needle, and the incision length in the trial group were superior to the control group (P<0.05), and there was no significant difference in fracture fixation time between groups (P>0.05). All patients were followed up 4-16 months (mean, 7 months). The fracture did not heal in 1 patient of trial group, and the other fractures healed in 2 groups; the fracture healing time was (17.6±1.9) weeks in trial group and (18.2±1.9) weeks in control group, and there was no significant difference between groups (t=0.957, P=0.345). At last follow-up, the Harris score of the trial group was 82.4±5.8, which was higher than that of the control group (79.0±7.7), but the difference was not significant (t=–1.483, P=0.147). Conclusion Orthopedic robot-assisted FNS fixation in the treatment of fresh femoral neck fractures has the similar short-term effectiveness as the traditional method, but the former has advantages in terms of operation time, intraoperative blood loss, and the number of placing key-guide needle, making the operation more minimally invasive and quicker, and more suitable for older patients.
ObjectiveTo evaluate the feasibility and effectiveness of percutaneous screwdriver rod-assisted closed reduction in the treatment of valgus-impacted femoral neck fractures. MethodsBetween January 2021 and May 2022, 12 patients with the valgus-impacted femoral neck fractures were treated with percutaneous screwdriver rod-assisted closed reduction and femoral neck system (FNS) internal fixation. There were 6 males and 6 females with a median age of 52.5 years (range, 21-63 years). The fractures were caused by traffic accident in 2 cases, falling in 9 cases, and falling from height place in 1 case. All were unilateral closed femoral neck fractures, including 7 on the left side and 5 on the right side. The time from injury to operation was 1-11 days, with an average of 5.5 days. The fracture healing time and postoperative complications were recorded. The quality of fracture reduction was evaluated by Garden index. At last follow-up, Harris score was used to evaluate the hip joint function, also the shortening of femoral neck was measured. ResultsAll the operations were successfully completed. After operation, the incision fat liquefaction occurred in 1 case, which healed after enhanced dressing change, and the other patients’ incisions healed by first intention. All patients were followed up 6-18 months, with an average of 11.7 months. The X-ray film reexamination showed that the quality of fracture reduction was grade Ⅰ in 10 cases and grade Ⅱ in 2 cases according to the Garden index. All fractures reached bony union, and the healing time was 3-6 months, with an average of 4.8 months. At last follow-up, the femoral neck was shortened by 1-4 mm, with an average of 2.1 mm. No internal fixation failure or osteonecrosis of the femoral head occurred during follow-up. At last follow-up, the hip Harris score was 85-96, with an average of 92.4; 10 cases were rated as excellent and 2 were good. Conclusion The percutaneous screwdriver rod-assisted closed reduction can effectively reduce the valgus-impacted femoral neck fracture. It has the advantages of simple operation, effective, and less impact on blood supply.
ObjectiveTo investigate the early effectiveness of the Ti-Robot assisted femoral neck system (FNS) in the treatment of elderly Garden type Ⅱ and Ⅲ femoral neck fractures. Methods A retrospective analysis was conducted on the clinical data of 41 elderly patients with Garden type Ⅱ and Ⅲ femoral neck fractures who were admitted between December 2019 and August 2022 and met the selection criteria. Among them, 21 cases were treated with Ti-Robot assisted FNS internal fixation (study group), and 20 cases were treated solely with FNS internal fixation (control group). There was no significant difference in baseline data, including gender, age, side, cause of injury, time from injury to surgery, fracture Garden classification, and fracture line classification, between the two groups (P>0.05). Surgical effectiveness was evaluated based on parameters such as operation time (including incision time and total operation time), reduction level, number of dominant pin insertions, intraoperative fluoroscopy frequency, incision length, whether to extend the incision, need for assisted reduction, postoperative hospital stay, fracture healing time, incidence of osteonecrosis of the femoral head, postoperative visual analogue scale (VAS) score at 1 day, and Harris hip score at last follow-up. Results The study group showed significantly shorter incision time, fewer dominant pin insertions, fewer instances of extended incisions, fewer intraoperative fluoroscopy frequency, and smaller incisions than the control group (P<0.05). There was no significant difference in total operation time, reduction level, and assisted reduction frequency between the two groups (P>0.05). Both groups achieved primary wound healing postoperatively, with no complications such as incision leakage or skin infection. All patients were followed up 12-24 months with an average of 14.6 months. Fractures healed in both groups, with no significant difference in healing time (P>0.05). There was no significant difference in postoperative hospital stay between the two groups (P>0.05). The study group showed significantly better VAS score at 1 day after operation and Harris hip score at last follow-up when compared to the control group (P<0.05). No complication such as internal fixation failure, fracture displacement, or hip joint varus occurred in both groups during the follow-up. Osteonecrosis of the femoral head occurred in 1 patient of the control group, while no was observed in the study group, and the difference in the incidence of osteonecrosis of the femoral head between the two groups was not significant (P=0.488).Conclusion Compared to sole FNS internal fixation treatment, Ti-Robot assisted FNS internal fixation for elderly Garden typeⅡ and Ⅲ femoral neck fractures can reduce incision time, achieve minimally invasive and accurate nail implantation, and decrease intraoperative fluoroscopy frequency, leading to improved postoperative hip joint function recovery.
Objective To investigate short-term effectiveness of robot-guided femoral neck system (FNS) combined with cannulated compression screw (CCS) fixation in treatment of femoral neck fracture in young and middle-aged patients. Methods A clinical data of 49 young and middle-aged patients with femoral neck fractures, who met the selection criteria and admitted between January 2021 and June 2023, was retrospectively analyzed. After reduction of femoral neck fractures, 27 cases were treated with robot-guided FNS fixation (FNS group) and 22 cases with robot-guided FNS and CCS fixation (FNS+CCS group). There was no significant difference in baseline data such as gender, age, cause of fracture, time from fracture to operation, fracture side, and classification (Garden classification and Pauwels classification) between the two groups (P>0.05). The operation time, intraoperative blood loss, intraoperative fluoroscopy frequency, the time when the patient began bearing weight, and hip joint pain and functional scores (VAS score and Harris score) at last follow-up for two groups were recorded. Imaging re-examination was taken to evaluate the quality of fracture reduction, fracture healing, as well as the occurrence of fracture non-union, osteonecrosis of the femoral head, and femoral neck shortening. Results All operations were successfully completed and the incisions healed by first intention. There was no significant difference in operation time and intraoperative blood loss between the two groups (P>0.05), and the intraoperative fluoroscopy frequency in FNS+CCS group significantly increased compared to FNS group (P<0.05). All patients were followed up 12-18 months (mean, 14.1 months). Imaging re-examination showed that there was no significant difference in fracture reduction quality between the two groups (P>0.05), but the fracture healing time was significantly shorter in FNS+CCS group than in FNS group, and weight-bearing began earlier (P<0.05). The incidences of femoral neck shortening, fracture non-union, and osteonecrosis of the femoral head were lower in FNS+CCS group than in FNS group, and there was significant difference in the incidence of femoral neck shortening between groups (P<0.05). At last follow-up, there was no significant difference in VAS scores between the two groups (P>0.05). However, the Harris score was significantly higher in FNS+CCS group than in FNS group (P<0.05). ConclusionCompared with FNS fixation alone, robot-guided FNS combined with CCS fixation in the treatment of femoral neck fractures in young and middle-aged patients has obvious advantages in terms of early weight bearing and fracture healing, improves fracture healing rate, effectively prevents postoperative complications, and can obtain good short-term effectiveness.