Comparison of clinical effect between autogenous semitendinosus and allogenic tendons for anatomical reconstruction of anterior talofibular ligament and calcaneofibular ligament under arthroscopy / 中华骨科杂志

ABSTRACT

Objective To compare the clinical effects of autologous semitendinosus tendon and allogenic tendon arthroscopic anatomical reconstruction of anterior talofibular ligament (ATFL) combined with calcaneofibular ligament (CFL) in the treatment of chronic lateral ankle instability.Methods A retrospective analysis was made of 55 patients with chronic lateral ankle instability who underwent arthroscopic reconstruction of ATFL combined with CFL from January 2012 to June 2017.A total of 28 cases were treated with autologous semitendinosus tendon (autologous group),including 19 males and 9 females,with an average age of 28.5±8.03 years (range,16-46 years).A total of 27 cases were treated with allogenic tendon (allogenic group),including 17 males and 10 females,with an average age of 27.48±7.89 years (range,16-46 years).ATFL/CFL was reconstructed by the same method in both groups.The reconstruction methods were the same between the groups.The talus and calcaneus were fixed with absorbable compression nails.Results The operation duration in the autologous group was 94.07±7.83 min,which was longer than that in the allogeneic group 63.56±7.96 min (t=14.51,P＜0.001).Fever days 5.26±0.90 days in allogeneic group were longer than 2.46±0.74 days in autologous group (t=-12.55,P＜0.001).Wound healing duration in allogeneic group was 13.44±3.33 days longer than that in autologous group 10.32±2.34 days (t=-4.01,P＜0.001).In the autologous group,28 cases were followed up for 34.54± 16.04 months,and 27 cases in the allograft group were followed up for 42.74± 17.79 months.The mean AOFAS score improved from 63.64± 11.20 before operation to 90.21 ±4.48 after operation in the autologous group,and that improved from 63.93± 10.59 before operation to 89.56±5.15 after operation in the allogeneic group with no significant difference between the two groups after operation (t=0.506,P=0.615).The mean VAS score decreased from 5.79± 1.79 before operation to 1.54± 1.35 after operation in the autologous group,and from 5.89± 1.78 before operation to 2.04± 1.32 after operation in the allogeneic group.There was no significant difference between the two groups after operation (t=-1.396,P=0.168).Tegner score increased from 4.07± 1.39 to 6.43± 1.14 in the autologous group and from 3.85±1.06 to 6.52±0.85 in the allogeneic group with no significant difference between the two groups after operation (t=-0.333,P=0.740).Stress radiographic showed that the talar tilt angle decreased from 15.60°±3.86° to 6.01°±2.64° in the autologous group,16.99°±3.78° to 7.14°±3.34° in the allogeneic group,and there was no significant difference between the two groups after operation (t=-1.382,P=0.171).Anterior talar displacement reduced from 10.82±3.12 mm to 4.03±1.69 mm in the autologous group,from 10.10±2.02 mm to 4.17±1.52 mm in the allogeneic group,and there was no significant difference between the two groups after operation (t=-0.326,P=0.746).No donor tendon dysfunction was found in the autologous group.At the end of follow-up,there was no difference in ankle dorsiflexion,plantar flexion and hind foot mobility between autologous group and allogeneic group.Conclusion Arthroscopic autologous tendon and allogeneic tendon reconstruction of AFTL combined with CFL can obtain satisfactory short-term results.The autologous tendon group was superior to the allogeneic group in terms of fever,wound healing time.However,there was no significant difference in clinical effects between the two groups.