Objective To investigate the surgical technique and short-term effectiveness of anterior cruciate l igament (ACL) reconstruction with LARS artificial l igament. Methods Between November 2008 and April 2010, eighty patients withACL injury were treated with LARS artificial l igament under arthroscope and successfully followed up. There were 51 males and 29 females, aged from 17 to 43 years with an average of 29.2 years. The injuries were caused by sport in 63 cases, traffic accident in 14 cases, and bruise in 3 cases. There were 43 left knees and 37 right knees. The disease duration ranged from 10 days to 11 months. The anterior drawer test, Lachman test, and pivot shift test for all cases were rated as positive. The preoperative Lysholm score was 55.4 ± 5.7, Irgang score was 48.3 ± 6.2, and Larson score was 54.8 ± 7.4; and the International Knee Documentation Committee (IKDC) score was lower than normal level in all cases. Obl ique coronal MRI showed ACL injury in all cases. Residual ACL and synovium were preserved during surgery. Results All incisions healed by first intention without compl ication of infection or deep venous thrombosis. All patients were followed up 7 to 24 months with an average of 16.8 months. There were 3 cases of screws exposure toward femoral cortical bone, 2 cases of loosening tibial screw, and 1 case of knee extension l imitation, and they were cured after symptomatic treatment. No LARS artificial l igament rupture and joint fibrosis occurred during followup. At last follow-up, the results of anterior drawer test, Lachman test, and pivot shift test were positive in 2, 3, and 3 patients,respectively. There were significant differences in Lysholm, Irgang, and Larson scores of affected knees between preoperation and 6 weeks postoperatively, last follow-up, respectively (P lt; 0.05). The normal rate of IKDC score were 43.75% (35/80) and 97.50% (78/80) at 6 weeks postoperatively and last follow-up, respectively. Conclusion The viscoelastic properties of LARS artificial l igament is different from that of biological materials. The graft should be fixed at a relatively extension position to avoid knee extension l imitation and sl ight loosening of graft tension is permitted at flexion position. Good cl inical result could be achieved if the technique is well appl ied.
ObjectiveTo investigate the feasibil ity and short-term effectiveness of percutaneous endoscopic spine surgery for treatment of lumbar disc herniation with posterior ring apophysis separation. MethodsBetween July 2008 and January 2013, 57 patients with lumbar disc herniation and posterior ring apophysis separation were treated. There were 39 males and 18 females, aged from 13 to 46 years (mean, 26.7 years). Of 57 cases, 29 had a clear trauma history. All patients had single segmental unilateral lumbar disc herniation, and the location was at L4, 5 in 22 cases and at L5, S1 in 35 cases; there were 25 cases of lateral bone fragments and 32 cases of central cortical and cancellous fragments. While fracture located at posterior inferior edge of the vertebrae at L4 level in 9 cases and at L5 level in 8 cases, at posterior superior edge at L5 level in 13 cases and in S1 level in 27 cases. Percutaneous endoscopic surgeries were performed via interlaminar or transforaminal approach from unilaterally symptomatic side for discectomy of lumbar disc herniation and partial or complete resection of free bone fragments. ResultsAccurate positioning was obtained in all patients during operation, and no complication of nerve root injury, hematoma formation, or dural tear occurred. The operation time was 20-85 minutes; the intraoperative fluoroscopy times were 2-15 times, and the blood loss was 3-10 mL. Postoperative radiographic examination showed that bone fragment was not removed in 16 cases, was partly removed in 32 cases, and was completely removed in 9 cases. Disc was completely removed. All patients were followed up 10-64 months (median, 16 months). According to modified Macnab criteria for the evaluation of effectiveness, the results were excellent in 48 cases, good in 6 cases, and fair in 3 cases, and the excellent and good rate was 94.7%. ConclusionPercutaneous endoscopic spine surgery through unilaterally symptomatic approach has advantages of small tissue damage and lumbar structure damage, less bleeding, and shorter recovery time. It has a good short-term effectiveness, but long-term effectiveness need further follow-up.
ObjectiveTo investigate the short-term effectiveness of minimally invasive percutaneous plate osteosynthesis (MIPPO) in treatment of anterior pelvic ring fractures. MethodsBetween January 2012 and October 2013, 16 patients with anterior pelvic ring fractures were treated with MIPPO. There were 10 males and 6 females at the age of 20-63 years (mean, 41 years). The causes of injury were traffic accident in 9 cases and falling from height in 7 cases. The duration of injury to admission was 2 hours to 5 days (mean, 1 day). According to Tile classification, 8 cases were rated as type B2, 4 cases as type B3, 2 cases as type C1, and 2 cases as type C2. Of them, 2 cases had iliac wing fracture, and 4 cases had pelvic posterior ring fracture. The time from admission to operation was 3-12 days (mean, 6 days). ResultsThe bleeding volume was 60-120 mL (mean, 70 mL). All wounds healed by first intention. No postoperative complication of deep venous thrombosis or long-term continuous pain occurred. All cases were followed up 5-27 months (mean, 11.5 months). No clinical manifestation of lateral femoral cutaneous nerve injury or spermatic cord injury was found, and cremasteric reflex existed in males. All cases obtained bony union, and the healing time was 12-16 weeks (mean, 13 weeks). During the follow-up period, no loss of fracture reduction and no internal fixation loosening or broken were observed. According to Matta radiological evaluation criterion, 16 cases had anatomical reduction, and 3 cases had satisfactory reduction; according to Majeed scoring system of pelvic fracture, the results were excellent in 12 cases and good in 4 cases. ConclusionMIPPO for treatment of anterior pelvic ring fractures has the advantages of less intraoperative blood loss, few soft tissue complications, and low infection rate, and can get satisfactory short-term effectiveness.
ObjectiveTo evaluate the short-term effectiveness of Hyprocure subtalar stabilization for adolescent flexible flatfoot. MethodsBetween December 2013 and September 2015, 14 cases (26 feet) of adolescent flexible flatfoot were treated with Hyprocure subtalar stabilization. There were 10 males (18 feet) and 4 females (8 feet) with the average age of 14.5 years (range, 12-18 years). There were 12 cases (24 feet) of congenital flatfoot and 2 cases (2 feet) of flatfoot caused by neurological diseases. The preoperative pain visual analogue scale (VAS) was 4.2±0.4; the American Orthopaedic Foot and Ankle Society (AOFAS) ankle and foot function score was 72.2±12.3. Simple Hyprocure subtalar stabilization was used in 8 feet, and a combination of minimally invasive percutaneous Achilles tendon lengthening or gastrocnemius lysis, preposing of posterior tibial tendon and spring ligament tightening surgery, or open dorsal medial cuneiform osteotomy and bone graft in 18 feet. The VAS score and AOFAS ankle and foot function score were used to evaluate the effectiveness. The talus-the first metatarsal angle (T1MT), the talus-the second metatarsal angle (T2MT), and talonavicular coverage angle (TCA) were measured on the anteroposterior X-ray film; the Meary's angle, calcaneal inclination angle (CI), and the talar declination (TD) were measured on the lateral X-ray film. ResultsAll incisions healed well. Two cases (2 feet) had tarsal sinus pain, which was cured after symptomatic treatment. All patients were followed up 5-24 months (mean, 14.5 months). Pain was obviously relieved. At last follow-up, VAS score was significantly decreased to 1.4±0.3 (t=27.676, P=0.000). AOFAS ankle and foot function score was significantly increased to 94.5±10.8 (t=7.765, P=0.000). The postoperative X-ray film showed that medial arch was elevated after the Hyprocure subtalar stabilization was placed in tarsal sinus. At last follow-up, the T1MT, T2MT, TCA, Meary's angle, and TD were significantly improved when compared with preoperative ones (P < 0.05); CI has no significant improvement (t=0.109, P=0.598). ConclusionHyprocure subtalar stabilization is simple, effective for adolescent flexible flatfoot, the short-term effectiveness is good. But the indications should be strictly controlled, treatment should be individualized, corresponding auxiliary soft tissue and bone surgery is needed. The long-term effectiveness needs further follow-up.