OBJECTIVE: To explore the methods of treatment for old achilles tendon rupture merging with skin defect. METHODS: By following up retrospectively 10 patients from February 1995 to December 2001, we analyzed the operative methods, the points for attention and the results. Gastrocnemius musculocutaneous flaps were used in 3 cases, foot lateral skin flaps in 4 cases, superior medial malleolus skin flaps in 2 cases, and sural neural skin flap in 1 case. The Achilles tendon was sutured directly in 8 patients, with Lindholm’s technique in 2 patients. RESULTS: All flaps survived and the wound healed well in 8 cases and reruptured in 2 cases. According to Yin Qing-shui’s criteria to test the efficacy, the results were excellent in 5 patients, good in 4 and poor in 1. CONCLUSION: Repairing the old Achilles tendon rupture merging with skin defect by use of microsurgery has good results and plays an important role in reducing joint contracture and stiffness, and in saving the ability to push forward and flex.
Objective To evaluate the effectiveness of flexor hallucis longus tendon harvested using a minimally invasive technique in reconstruction of chronic Achilles tendon rupture. Methods Between July 2006 and December 2009, 22 patients (22 feet) with chronic Achilles tendon rupture were treated, including 16 males and 6 females with a median age of 48 years (range, 28-65 years). The disease duration was 27-1 025 days (median, 51 days). Twenty-one patients had hoofl ikemovement’s history and 1 patient had no obvious inducement. The result of Thompson test was positive in 22 cases. The score was 53.04 ± 6.75 according to American Orthopedic Foot and Ankle Society (AOFAS) ankle and hindfoot score system. MRI indicated that the gap of the chronic Achilles tendon rupture was 4.2-8.0 cm. A 3 cm-long incision was made vertically in the plantar aspect of the midfoot and a 1 cm-long transverse incision was made in a plantar flexor crease at the base of the great toe to harvest flexor hallucis longus tendon. The flexor hallucis longus tendon was 10.5-13.5 cm longer from tuber calcanei to the end of the Achilles tendon, and then the tendon was fixed to the tuber calcanei using interface screws or anchor nail after they were woven to form reflexed 3-bundle and sutured. Results Wound healed by first intention in all patients and no early compl ication occurred. Twenty-two patients were followed up 12-42 months (mean, 16.7 months). At 12 months after operation, The AOFAS ankle and hindfoot score was 92.98 ± 5.72, showing significant difference when compared with that before operation (t= —40.903, P=0.000). The results were excellent in 18 cases, good in 2 cases, and fair in 2 cases with an excellent and good rate of 90.9%. No sural nerve injury, posterior tibial nerve injury, plantar painful scar, medial plantar nerve injury, and lateral plantar nerve injury occurred. Conclusion Chronic Achilles tendon rupture reconstruction with flexor hallucis longus tendon harvested using a minimally invasive technique offers a desirable outcome in operative recovery, tendon fixation, and complications.
Objective To evaluate the effectiveness of interference screw and flexor hallucis longus tendon as augmentation material in repair of chronic Achilles tendon rupture. Methods From October 2004 to June 2007, 32 patients (35 feet) with chronic Achilles tendon rupture were treated, including 21 males (22 feet) and 11 females (13 feet) and aging 32-85 years. The disease course was 4-132 days. There were 29 patients with hoofl ike movements history and 3 patients withoutobvious inducement. The result of Thompson test was positive in 31 cases (33 feet). The score was 56.09 ± 7.25 according to the American Orthopaedic Foot and Ankle Society ankle-hindfoot scoring system (AOFAS). MRI indicated that the gap of the chronic Achilles tendon rupture was 0.5-5.0 cm. Medial foot incision associated with medial heel incision or only medial heel incision was made to harvest flexor hallucis longus tendon. The tendon should be 3 cm longer than the end of the Achilles tendon, then fix the tendon to the calcaneus. Results Wound dehiscence occurred and wound healed after dressing change in 1 case; wound healed by first intention in other patients. Thirty-two patients were followed up for 12-32 months (mean 19.4 months). The AOFAS score was 94.22 ± 4.63, showing statistically significant difference when compared with that before operation (P lt; 0.01). The results were excellent in 28 cases, good in 3 cases and fair in 1 case. No sural nerve injury, posterior tibial nerve injury, plantar painful scar, medial plantar nerve injury and lateral plantar nerve injury occurred. Conclusion Flexor hallucis longus tendon transfer offers a desirable outcome in operative recovery, tendon fixation and compl ications.
Objective To compare the biomechanical properties of two ultra-strong sutures and suturing methods in panda rope bridge technique (PRBT) application, and provide guidance for clinical selection of suture threads and suture methods. Methods Forty Achilles tendons from bulls were randomly divided into 4 groups (n=10) and transected at the 4 cm proximal to the tendon insertion. Groups A and B used Ethibond sutures (USP 5), the proximal end was fixed at the myotendious junction with Krackow sutures and the distal end was fixed through a calcaneus canal. Groups A and B had 4 and 8 threads through the stump plane, respectively. Groups C and D used Ultrabraid sutures (USP 2), the proximal end was fixed at the myotendious junction with Krackow sutures and the distal end was fixed in the calcaneus with two anchors. Groups C and D had 4 and 8 threads through the stump plane, respectively. The dynamic tensile forces of 20-100, 20-200, 20-300, and 20-400 N were tested respectively by using a dynamic tensile testing machine at 0.5 Hz for 250 cycles. After each stage of testing, the gap between stumps was measured with a caliper and the type of suture failure was recorded. Results After dynamic tensile forces of 20-100 N and 20-200 N, the gaps of the four groups arranged from small to large were groups D, B, C, and A. The differences between groups A and B and groups C and D were significant (P<0.05). But after dynamic tensile forces of 20-300 N and 20-400 N, the gaps were more than 5 mm in all groups. The suture retention rates of the four groups after dynamic tensile forces of 20-100 N and 20-200 N were all 100%. The suture retention rates of groups A, B, C, and D were 0, 80%, 60%, and 100%, respectively after dynamic tensile forces of 20-300 N. The differences of suture retention rates between group A and groups B and D were significant (P<0.05). There was no significant difference between groups B, C, and D (P>0.05). After dynamic tensile forces of 20-400 N, the suture retention rates of groups A, B, C, and D were 0, 50%, 0, and 70%, respectively. There were significant differences between groups A and B and groups C and D (P<0.05). Conclusion Repairing Achilles tendon rupture via PRBT with 8 ultra-strong sutures through the stump plane can meet the mechanical requirements for walking by using ankle boots and heel pads in the early accelerated rehabilitation after operation.
Objective
To introduce a modified technique for treating acute closed Achilles tendon rupture and evaluate the preliminary effectiveness.
Methods
Between March 2011 and September 2015, 8 cases (8 sides) with acute closed Achilles tendon rupture were repaired with the laminated bevel suturing technique. All of the patients were male with an average age of 39.3 years (range, 22-58 years), injured in nonprofessional sports. The diagnosis was confirmed by typical signs of positive heel-lift test and Thompson test; the complete rupture of Achilles tendon was determined by color Doppler ultrasound or MRI, and the distance between the stump and calcaneus was 2-5 cm (mean, 3.3 cm). The time from injury to operation was 2-12 days (mean, 4.1 days). With the patient in prone position, a posterior longitudinal incision medial to the tendon was made, the broken stumps of Achilles tendon were divided into 3 layers on the coronal plane, fibers made into strips. The strips were staggered and stacked, stitched side to side with absorbable suture. The ankle joint at the plantar flexion position was fixed with plaster, and early rehabilitation exercise was carried out.
Results
The operation time was 70-135 minutes (mean, 99 minutes); the intraoperative blood loss was 5-30 mL (mean, 15.6 mL). All the incisions healed by first intention without infection, except for 1 case who need dressing exchange because of partial delayed healing. All the patients were followed up 6-50 months (mean, 30.5 months). There was no complication of surgical site infection, sural nerve injury, or deep vein thrombosis. The patients could walk normally with powerful raising heels and return to previous sports, without complication of re-rupture. Compared with the contralateral side, the activity of ankle joint dorsiflexion reduced 0-6° (mean, 3°); plantar flexion reduced 1-5° (mean, 2°). At last follow-up, according to Arner-Lindholm score, the surgical results were excellent in 7 cases and good in 1 case, with an excellent and good rate of 100%.
Conclusion
Laminated bevel suturing technique is simple for repairing acute closed Achilles tendon rupture without the need of special surgical instruments. It provides enough tensile strength for early rehabilitation exercise to rapid and good recovery.
ObjectiveTo investigate the effectiveness of modified patellar tendon reconstruction using hamstring autograft in the treatment of chronic patellar tendon rupture and defects.MethodsThe clinical data of 11 patients with chronic patellar tendon rupture and defects admitted between January 2015 and August 2018 were retrospectively analyzed. The patient were treated with inverted U-shaped reconstruction technique using hamstring autografts, in which 2 bone tunnels were created at the level of 1/2 and lower 3/4 of the patella, and 1 bone tunnel was created beneath the tibial tuberosity. There were 8 males and 3 females with an average age of 30.1 years (range, 10-61 years). The average interval from the primary injury to the operation was 9.5 months (range, 2-36 months). According to Yousef classification, there were 7 cases of type A2, 3 cases of type B2, and 1 case of type C2. The length of the patella tendon defect was measured when the patella was reducted intraoperatively with an average of 4.5 cm (range, 2.7-7.1 cm). Subjective function scores [including International Knee Documentation Committee (IKDC) subjective score, Tegner activity level, and Lysholm score] were evaluated before operation and at last follow-up. The loss of knee extension, Caton index, and thigh circumference difference at 15 cm above the patella between bilateral limbs were also measured.ResultsAll patients were followed up 24-66 months (mean, 34.2 months). All incisions were primary healing, and there were no complications such as wound infection, venous thrombosis of the lower extremities, stiffness of the knee joint, graft failure, neurovascular injury, etc. No second revision surgery was performed during the follow-up. At last follow-up, the subjective function scores (IKDC subjective score, Tegner activity level, Lysholm score), loss of knee extension, thigh circumference difference, and Caton index were significantly improved when compared with those before operation (P<0.05). Two patients still had patella alta, with Caton indexes of 1.29 and 1.32, respectively.ConclusionIn the treatment of chronic patellar tendon ruptures and defects, the modified patellar tendon reconstruction using hamstring autograft can significantly improve the postoperative knee function, restore the normal range of knee extension, enhance the extensor and correct the patella alta.
Objective Platelet-rich plasma (PRP) can promote wound heal ing. To observe the effect of PRP injection on the early heal ing of rat’s Achilles tendon rupture so as to provide the experimental basis for cl inical practice. Methods Forty-six Sprague Dawley rats were included in this experiment, female or male and weighing 190-240 g. PRP and platelet-poor plasma (PPP) were prepared from the heart arterial blood of 10 rats; other 36 rats were made the models of Achilles tendon rupture, and were randomly divided into 3 groups (control group, PPP group, and PRP group), 12 rats for each group. In PPP and PRP groups, PPP and PRP of 100 μL were injected around the tendons once a week, respectively; in the control group, nothing was injected. The tendon tissue sample was harvested at 1, 2, 3, and 4 weeks after operation for morphology, histology, and immunohistochemistry observations. The content of collagen type I fibers also was measured. Specimens of each group were obtained for biomechanical test at 4 weeks. Results All the animals survived till the end of the experiment. Tendon edema gradually decreased and sliding improved with time. The tendon adhesion increased steadily from 1 week to 3 weeks postoperatively, and it was relieved at 4 weeks in 3 groups. There was no significant ifference in the grading of tendon adhesion among 3 groups at 1 week and at 4 weeks (P gt; 0.05), respectively. The inflammatory cell infiltration, angiogenesis, and collagen fibers were more in PRP group than in PPP group and control group at 1 week; with time, inflammatory cell infiltration and angiogenesis gradually decreased. Positive staining of collagen type I fibers was observed at 1-4 weeks postoperatively in 3 groups. The positive density of collagen type I fibers in group PRP was significantly higher than that in control group and PPP group at 1, 2, and 3 weeks (P lt; 0.05), but no significant difference was found among 3 groups at 4 weeks (P gt; 0.05). The biomechanical tests showed that there was no significant difference in the maximal gl iding excursion among 3 groups at 4 weeks postoperatively (P gt; 0.05); the elasticity modulus and the ultimate tensile strength of PRP group were significantly higher than those of control group and PPP group at 4 weeks (P lt; 0.05). Conclusion PRP injection can improve the healing of Achilles tendon in early repair of rat’s Achilles tendon rupture.
Objective To compare the effectiveness of the 3 methods (traditional open Achilles tendon anastomosis, minimally invasive percutaneous Achilles tendon anastomosis, and Achilles tendon anastomosis limited incision) for acuteAchilles tendon rupture so as to provide a reference for the choice of cl inical treatment plans. Methods Between December 2007 and March 2010, 69 cases of acute Achilles tendon rupture were treated by traditional open Achilles tendon anastomosis (traditional group, n=23), by minimally invasive percutaneous Achilles tendon anastomosis (minimally invasive group, n=23), and by Achilles tendon anastomosis l imited incision (l imited incision group,n=23). There was no significant difference in gender, age, mechanism of injury, and American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score between 3 groups (P gt; 0.05). Results Minimally invasive group and limited incision group were significantly better than traditional group in hospital ization days and blood loss (P lt; 0.01). Incision infection occurred in 2 cases of traditional group, and healing of incision by first intention was achieved in all patients of the other 2 groups, showing significant difference in the complication rate (P lt; 0.05). Re-rupture of Achilles tendon occurred in 1 case (4.3%) of minimally invasive group and limited incision group respectively; no re-rupture was found in traditional group (0), showing significant difference when compared with the other 2 groups (P lt; 0.05). All cases were followed up 12-18 months with an average of 14.9 months. The function of the joint was restored. The AOFAS score was more than 90 points in 3 groups at 12 months after operation, showing no significant difference among 3 groups (P gt; 0.05). Conclusion The above 3 procedures can be used to treat acute Achilles tendon rupture. However, minimally invasive percutaneous Achilles tendon anastomosis and Achilles tendon anastomosis limited incision have the advantages of less invasion, good heal ing, short hospital ization days, and less postoperative complication, and have the disadvantage of increased risk for re-rupture of Achilles tendon after operations.
Objective To evaluate the positional relationship between protective channel and sural nerve while treating acute Achilles tendon rupture with channel assisted minimally invasive repair (CAMIR) technique based on anatomical observations of cadaver specimens. Methods Twelve adult cadaveric lower limb specimens (6 left, 6 right) were utilized. A CAMIR device was implanted at a distance of 4 cm from the proximal end of the specimen to the Achilles tendon insertion. The skin was incised along the tendon’s medial side, the sural nerve was dissected, and the positional relationship with the protective channel was observed. The distance from the sural nerve-Achilles tendon intersection to the calcaneal insertion, the vertical distance between protective channel and the calcaneal insertion, and the horizontal distance between the sural nerve and protective channel were measured by using vernier caliper. Results Anatomical examination demonstrated a variable positional relationship between the sural nerve and protective channel, with the sural nerve positioned above (8 specimens) or below (4 specimens) the protective channel. The distance from the sural nerve-Achilles tendon intersection to the calcaneal insertion was (105.67±14.94) mm, the vertical distance between protective channel and the calcaneal insertion was (93.20±9.57) mm, and the horizontal distance between the sural nerve and protective channel was (0.31±0.14) mm. Conclusion The use of CAMIR technique for the treatment of acute Achilles tendon rupture can effectively avoid iatrogenic injury to the sural nerve.
To review the progress in the treatment of chronic Achilles tendon rupture. Methods Recent l iterature on the treatment of chronic Achilles tendon rupture was reviewed. Results The choice of operative method for the repair of chronic Achilles tendon rupture depended primarily on the length of tendon defect, the atrophic condition of triceps surae muscle, and the age and the sportive level of patient. Conclusion Most chronic Achilles tendon ruptures should be treated operatively to reach good functional recovery, and tissue engineering provides a promising future for tendon defect repair.
