Objective To review the clinical application progress of the Sauvé-Kapandji procedure. Methods The indications, techniques, effectiveness, and modifications of the Sauvé-Kapandji procedure were analyzed and evaluated by an extensive review of the relevant literature. Results The Sauvé-Kapandji procedure can be applied for various disorders of the distal radioulnar joint. Risk of series of complications exist, which might be reduced by modification of the procedure. Conclusion The Sauvé-Kapandji procedure, as a salvage operation, can be a good alternative by meticulous manipulation for appropriate cases with distal radioulnar joint disorders.
Objective To analyze midterm effectiveness of percutaneous compression plate (PCCP) for femoral neck fractures in young and middle-aged patients. Methods The clinical data of 173 young and middle-aged patients with femoral neck fractures who met the selection criteria and were treated with PCCP internal fixation between January 2011 and March 2019 were retrospectively analyzed. Among them, there were 102 males and 71 females; the age ranged from 18 to 59 years, with an average age of 44.9 years. The injury causes included falling in 112 cases, traffic accident in 32 cases, falling from height in 21 cases, struck in 7 cases, and sprain in 1 case. According to Garden classification, there were 90 cases without displacement (51 cases of type Ⅰ and 39 cases of type Ⅱ) and 83 cases with displacement (51 cases of type Ⅲ and 39 cases of type Ⅳ). According to Pauwels classification, there were 10 cases of type Ⅰ, 88 cases of type Ⅱ, and 75 cases of type Ⅲ. The time from injury to operation was 1-14 days, with an average of 4.5 days. The operation time, intraoperative blood loss, perioperative blood transfusion, and hospitalization stay were recorded; the fracture reduction was evaluated by Garden alignment index at 1 day after operation; fracture healing and complications were observed, and Harris score was used to evaluate the effectiveness at last follow-up. Results The operation time was 34-130 minutes (mean, 78.6 minutes); the intraoperative blood loss was 10-250 mL (mean, 93.2 mL); 171 cases did not receive blood transfusion during perioperative period, 2 patients received blood transfusion of 400 mL and 800 mL respectively; the hospitalization stay was 3-19 days (mean, 11.3 days). All 173 cases were followed up 11-103 months, with an average of 42.6 months. Postoperative reduction quality was satisfactory in 170 cases and unsatisfactory in 3 cases. There were 13 cases of osteonecrosis of femoral head, 1 case of screw cutting out, 2 cases of screw withdrawal, 5 cases of femoral neck shortening, and no deep vein thrombosis in the lower extremity requiring surgical intervention. Fractures healed in 172 patients, and the healing time ranged from 3.0 to 7.5 months, with an average of 3.6 months; 1 case of nonunion occurred. Internal fixation was removed after fracture healing in 51 patients. At last follow-up, Harris score was excellent in 156 cases, good in 11 cases, fair in 3 cases, and poor in 3 cases, with an excellent and good rate of 96.5%. ConclusionThe treatment of femoral neck fractures with PCCP has advantages of rigid fixation, immediate weight-bearing, and sliding compression, reducing the incidences of osteonecrosis of femoral head and nonunion.
ObjectiveTo estimate the early effectivenss of computer navigation-assisted total knee arthroplasty (TKA) by comparing with traditional TKA.MethodsThe clinical data of 89 patients (100 knees) underwent primary TKA between October 2017 and July 2018 were analyzed retrospectively, including 44 patients (50 knees) who completed the TKA under the computer-assisted navigation system as the navigation group and 45 patients (50 knees) treated with traditional TKA as the control group. There was no significant difference between the two groups (P>0.05) in gender, age, body mass index, diagnosis, side, disease duration, Kellgren-Lawrence classification of osteoarthritis, and preoperative American Hospital for Special Surgery (HSS) score, range of motion (ROM), hip-knee-ankle angle (HKA) deviation. The operation time, incision length, difference in hemoglobin before and after operation, postoperative hospital stay, and the complications were recorded and compared between the two groups. The HSS score, ROM, and joint forgetting score (FJS-12) were used to evaluate knee joint function in all patients. Unilateral patients also underwent postoperative time of up and go test and short physical performance battery (SPPB) test. At 1 day after operation, the HKA, mechanical lateral distal femoral angle (mLDFA), mechanical medial proximal tibial angle (mMPTA), sagittal femoral component angle (sFCA), and sagittal tibial component angle (sTCA) were measured and calculated the difference between the above index and the target value (deviation); and the joint line convergence angle (JLCA) was also measured. ResultsThe operations of the two groups were successfully completed, and the incisions healed by first intention. The operation time and incision length of the navigation group were longer than those of the control group (P<0.05); the difference in difference of hemoglobin before and after the operation and the postoperative hospital stay between groups was not significant (P>0.05). Patients in the two groups were followed up 27-40 months, with an average of 33.6 months. Posterior tibial vein thrombosis occurred in 1 case in each of the two groups, and 1 case in the control group experienced repeated knee joint swelling. The HSS scores of the two groups gradually increased after operation (P<0.05); HSS scores in the navigation group at 1 and 2 years after operation, and knee ROM and FJS-12 scores at 2 years were significantly higher than those in the control group (P<0.05). There was no significant difference in the postoperative time of up and go test and SPPB results between the two groups at 7 days after operation (P>0.05); the postoperative time of up and go test of the navigation group was shorter than that of the control group at 2 years (t=–2.226, P=0.029), but there was no significant difference in SPPB (t=0.429, P=0.669). X-ray film measurement at 1 day after operation showed that the deviation of HKA after TKA in the navigation group was smaller than that of the control group (t=–7.392, P=0.000); among them, the HKA deviations of 50 knees (100%) in the navigation group and 36 knees (72%) in the control group were less than 3°, showing significant difference between the two groups (χ2=16.279, P=0.000). The JLCA and the deviations of mLDFA, mMPTA, sFCA, and sTCA in the navigation group were smaller than those in the control group (P<0.05).ConclusionCompared with traditional TKA, computer navigation-assisted TKA can obtain more accurate prosthesis implantation position and lower limb force line and better early effectiveness. But there is a certain learning curve, and the operation time and incision length would be extended in the early stage of technology application.
ObjectiveTo investigate the surgical technique and the short-term effectivenss of lateral unicompartmental knee arthroplasty (LUKA) through lateral approach in the treatment of valgus knee and to calculate the maximum value of the theoretical correction of knee valgus deformity. MethodsA retrospective analysis was performed on 16 patients (20 knees) who underwent LUKA and met the selection criteria between April 2021 and July 2022. There were 2 males and 14 females, aged 57-85 years (mean, 71.5 years). The disease duration ranged from 1 to 18 years, with an average of 11.9 years. Knee valgus was staged according to Ranawat classification, there were 6 knees of type Ⅰ, 13 knees of type Ⅱ, and 1 knee of type Ⅲ. All patients were assigned the expected correction value of genu valgus deformity by preoperative planning, including the correction value of lateral approach, intra-articular correction value, and residual knee valgus deformity value. The actual postoperative corrected values of the above indicators were recorded and the theoretical maximum correctable knee valgus deformity values were extrapolated. The operation time, intraoperative blood loss, incision length, hospital stay, hip-knee-ankle angle (HKA), mechanical lateral distal femoral angle (mLDFA), mechanical medial proximal tibia angle (mMPTA), joint line convergence angle (JLCA), posterior tibial slope (PTS), range of motion (ROM), Hospital for Special Surgery (HSS) score, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score were also recorded for effectiveness evaluation. Results The patients’ incision length averaged 13.83 cm, operation time averaged 85.8 minutes, intraoperative blood loss averaged 74.9 mL, and hospital stay averaged 6.7 days. None of the patients suffered any significant intraoperative neurological or vascular injuries. All patients were followed up 10-27 months, with a mean of 17.9 months. One patient with bilateral knee valgus deformities had intra-articular infection in the left knee at 1 month after operation and the remaining patients had no complication such as prosthesis loosening, dislocation, and infection. The ROM, HSS score, and WOMAC score of knee joint significantly improved at each time point after operation when compared to those before operation, and the indicators further improved with time after operation, the differences were all significant (P<0.05). Imaging measurement showed that HKA, mLDFA, JLCA, and PTS significantly improved at 3 days after operation (P<0.05) except for mMPTA (P>0.05). Postoperative evaluation of the knee valgus deformity correction values showed that the actual intra-articular correction values ranged from 0.54° to 10.97°, with a mean of 3.84°. The postoperative residual knee valgus deformity values ranged from 0.42° to 5.30°, with a mean of 3.59°. The actual correction values of lateral approach ranged from 0.21° to 12.73°, with a mean of 4.26°. ConclusionLUKA through lateral approach for knee valgus deformity can achieve good early effectiveness. Preoperative planning can help surgeons rationally allocate the correction value of knee valgus deformity, provide corresponding treatment strategies, and the maximum theoretical correction value of knee valgus deformity can reach 25°.