A new method of anterior talofibular ligament reconstruction:Arthroscopically artificial ligament reconstruction with tensional remnant-repair

Purpose:To investigate the clinical effects of arthroscopically artificial ligament reconstruction with tensional remnant-repair in patients who are obese,and/or with demand for highly intensive sports,and/or with poor-quality ligament remnants.Methods:A retrospective case series study was performed on patients treated by arthroscopically anterior talofibular ligament(ATFL)reconstruction with tensional remnant repair technique from January 2019 to August 2021.General data,including demographics,surgical time,and postoperative adverse events,were recorded.The American Orthopaedic Foot and Ankle Society score(AOFAS),foot and ankle ability measure(FAAM),visual analog scale(VAS),and anterior talar translation were measured preoperatively and at 6 weeks,3 months,and 2 years postoperatively.Ultrasonography examination was performed preoperatively and 2 years postoperatively to evaluate the ATFL.Data were analyzed using SPSS 19.0.F test was used to analyze the pre-and postoperative VAS,FAAM,and AOFAS scores.The significance was set at p<0.05.Results:There were 20 males and 10 females among the patients with a mean age of(30.71±5.81)years.The average surgical time was(40.21±8.59)min.No adverse events were observed after surgery.At 2 years postoperatively,the anterior talar translation test showed grade 0 laxity in all patients.VAS score significantly decreased from preoperatively to 6 weeks,3 months,and 2 years postoperatively(p<0.001).Improvement of FAAM score and the AOFAS score from preoperatively to 6 weeks,3 months,and 2 years postoperatively was statistically significant(p<0.001).At 3 months postoperatively,most patients(23/30)could return to their pre-injured activities of daily living status.At 2 years postoperatively,all patients were able to return to their pre-injured activities of daily living status,and almost every patient(18/19)who expected highly intensive sports returned to sports with only 1 obese patient failing to achieve the goal.The ultrasonography examination at 2 years postoperatively showed that there was a linear band structure of soft tissue on the tension-rich fiber tape image from the fibular to the talar attachment sits of ATFL.Conclusion:The novel arthroscopically artificial ligament reconstruction with tensional remnant-repair technique for ATFL achieved satisfactory clinical outcomes in the short and medium term after operation,and allowed early return to pre-injured activities,which could be a reliable option for patients with chronic lateral ankle instability.

Surgical exposures of the distal humeral fractures: An anatomical study of the anterior, posterior, medial and lateral approaches

Purpose:Exposure of the articular surface is the key to the successful treatment of intra-articular fractures of distal humerus. Anterior, posterior olecranon osteotomy as well as medial and lateral approaches are the four main approaches to the elbow. The aim of this study was to compare the exposure of distal articular surfaces of these surgical approaches.Methods:Twelve cadavers were used in this study. Each approach was performed on six elbows according to previously published procedures. After completion of each approach, the exposed articular surfaces were marked by inserting 0.5 mm K-wires along the margins. The elbow was then disarticulated and the exposed articular surfaces were painted. The distal humeral articular surfaces were then closely wrapped using a piece of fibre-glass screen net with meshes. The exposed articular surfaces and the total articular surfaces were calculated by counting the number of meshes, respectively.Results:The average percentages of the exposed articular surfaces for the anterior, posterior olecranon osteotomy, medial and lateral approaches were 45.7% ± 2.0%, 53.9% ± 7.1%, 20.6% ± 4.9% and 28.5% ± 6.3%, respectively.Conclusion:The anterior and posterior approaches provide greater exposures of distal humeral articular surface than the medial and lateral ones in the treatment of distal humeral fractures.