ObjectiveTo compare the clinical efficacy between medial collateral ligament (MCL) repair and MCL reconstruction in multi-ligament injury. MethodsThirty-one patients with MCL rupture and multi-ligament injury of knee joint were treated between August 2008 and August 2012, and the clinical data were retrospectively analyzed. Of 31 patients, 11 cases underwent MCL repair (repair group), and 20 cases underwent MCL reconstruction (reconstruction group). There was no significant difference in gender, age, body mass, injury side, injury cause, and preoperative knee Lyshlom score, International Knee Documentation Committee (IKDC) subjective score, range of motion, and medial joint opening between 2 groups (P > 0.05). The postoperative knee subjective function and stability were compared between 2 groups. ResultsAll incisions healed by first intention, and no postoperative complication occurred. All patients were followed up 2-4 years (mean, 3.2 years). At 2 years after operation, the IKDC subjective score, Lyshlom score, and range of motion were significantly increased in 2 groups when compared with preoperative ones (P < 0.05). The range of motion of reconstruction group was significantly better than that of repair group (P < 0.05). No significant difference was found in IKDC subjective score and Lyshlom score between 2 groups (P > 0.05). The medial joint opening was significantly improved in 2 groups at 2 years after operation when compared with preoperative one (P < 0.05), but no significant difference was found between 2 groups (P > 0.05). ConclusionBoth the MCL reconstruction and MCL repair can restore medial stability in multi-ligament injury, but MCL reconstruction is better than MCL repair in range of motion.
Objective To review the research progress in the repair and reconstruction of isolated traumatic radial head dislocation with annular l igament injury in children. Methods In recent years, the related l iterature concering isolated traumatic radial head dislocation with annular l igament injury in children was reviewed. Results For isolated traumatic radial head dislocation with annular l igament injury in children, the surgery should be chosen as the main treatment, includingopen reduction and annular l igament reconstruction surgery. Triceps aponeurosis is usually used as reconstruction materials of annular l igament, mainly because the position of taking material of annular l igament is at the operative incision with less surgery trauma and short operative time; aponeurosis is tough and thick with rigid fixation and low risk of re-dislocation. Artificial materials are paid attention to increasingly because they are easy to get, have rigid fixation, and can avoid operative injury caused by taking material of annular l igament. Conclusion Currently active annular l igament reconstruction surgery should be taken; triceps aponeurosis is widely adopted as reconstruction materials of annular l igament and artificial materials have come to be a new research trend.
Objective To discuss the effectiveness of operation technique for antero-medial rotatory instability (AMRI) of the knee joint caused by motorcycle. Methods Between June 2007 and December 2009, 32 cases of AMRI caused by motorcycle were treated. There were 28 males and 4 females with an average age of 35.5 years (range, 20-50 years). The interval between injury and surgery was 5-10 days (mean, 7 days). The anterior cruciate ligament (ACL) was injured at the attachment point of the condyles crest; the medial collateral ligament (MCL) was injured at central site in 19 cases, at medial condyles of femur in 10 cases, and at medial condyles of tibia in 3 cases, which were all closed injuries. The bone avulsion of condyles crest was fixed by steel wire and MCL was repaired. Results Red swelling and a little effusion occurred at the incision in 1 case, and the other incisions healed by first intention. Traumatic arthritis of the knee occured in 5 cases. Thirty-two cases were followed up 16-22 months (mean, 18.5 months). The X-ray examination showed that the fracture union time was 5-8 weeks (mean, 6 weeks) after operation. At last follow-up, the extension of knee joint was 0° and the flexion of the knee joint was 110-170° (mean, 155°). According to the synthetic evaluating standard of International Knee Documentation Committee, 24 cases were rated as A level, 6 cases as B, 1 case as C, and 1 case as D at last follow-up. Lysholm knee score was 85.93 ± 3.76 at last follow-up, which was significantly higher (t=53.785, P=0.000) than preoperative score 37.54 ± 3.43. Conclusion In patients with AMRI caused by motorcycle, steel wire is used to fix the bone avulsion of condyles crest and MCL should be repaired simultaneously as far as possible. And associating with the early postoperative functional exercise, the short-term effectiveness is satisfactory, but long-term effectiveness still need further follow-up observation.
ObjectiveTo explore the necessity of repairing the deep layer of deltoid ligament in the treatment of mixed medial injury associated with ankle fractures.MethodsBetween January 2016 and December 2018, 12 patients with mixed medial injury associated with ankle fractures were treated with the fixation of the lateral malleolus by bone plates, the fixation of the anterior colliculus of medial malleolus by cannulated screws, and the repair of the deltoid ligament by suture anchors. There were 8 males and 4 females, with an average age of 42 years (range, 18-56 years). According to the Lauge-Hansen classification criteria, there were 11 cases of supination-external rotation type and 1 case of pronation-external rotation type. According to the Weber classification criteria, all cases were type B. The time from injury to operation was 3-6 days, with an average of 4.7 days. In each patient, X-ray films of anteroposterior and lateral views and mortise view of ankle were taken postoperatively. The motion range of ankle joints was observed. The function of the ankle and the outcome of the treatment were evaluated according to the American Orthopaedic Foot and Ankle Society (AOFAS) scoring system, Olerud-Molander scoring system, and the visual analogue scale (VAS) score.ResultsAll cases were followed up 12-42 months (mean, 28 months). The 12 patients returned to their pre-injury jobs. Five patients with sports injury completely recovered to their pre-injury motor function. No patient experienced persistent medial ankle pain or ankle instability. At last follow-up, the ankle range of motion in dorsiflexion was 9°-25° (mean, 17.96°), which was 0°-11° (mean, 4.02°) less than that in normal side; the range of motion in plantar flexion was 38°-50° (mean, 43.90°), which was 0°-7° (mean, 2.53°) less than that in normal side. The AOFAS score was 88-100 (mean, 96.7); the Olerud-Molander score was 90-100 (mean, 96.5); the VAS score was 0-3 (mean, 1.1).ConclusionIt is necessary to repair the deep layer of deltoid ligament in the mixed medial injuries associated with ankle fracture, which include anterior colliculus fracture and deep deltoid ligament injury. A better outcome can be achieved by employing the suture anchor repair method.
ObjectiveTo investigate the risk factors of contralateral anterior cruciate ligament (ACL) injury after primary ACL reconstruction. Methods A retrospective review was conducted on the 716 patients with ACL injury who received primary ACL reconstruction surgery and met the selection criteria between January 2012 and September 2018. After a mean follow-up period of 7.6 years (range, 4-10 years), 65 patients (9.1%) experienced contralateral ACL injury (injured group) and 651 patients (90.9%) did not (uninjured group). There was no significant difference in age, body mass index, and preoperative Lachman test degree between groups (P>0.05). However, the proportion of female in the injured group was significantly higher than that of male (P<0.05), and the preoperative posterior tibial slope (PTS) was significantly higher than that of the uninjured group (P<0.05). Using the outcome of contralateral ACL injury as the dependent variable, the clinical data of the patient was first used as the independent variable, and univariate COX regression was used to analyze the prognostic influencing factors. Then, the indicators with differences in univariate COX regression were used as the independent variable, and multivariate COX regression was used to analyze the independent risk factors affecting prognosis. Log-Rank (Mantel-Cox) test was used to test and analyze the occurrence time of contralateral ACL injury in patients of different genders; X-tile software was used to analyze the occurrence time of contralateral ACL injury in patients with different PTS using Log-Rank (Mantel-Cox) test and PTS cut-off values. ResultsUnivariate COX regression analysis showed that gender and PTS were influence factors for contralateral ACL injury (P<0.05); further multivariate COX regression analysis showed that female and increased PTS were independent risk factors for contralateral ACL injury (P<0.05). The Log-Rank (Mantel-Cox) test results showed that the contralateral ACL injury occurred in female at 8.853 (8.600, 9.106) years, which was significantly shorter than that in male [9.661 (9.503, 9.819) years] (χ2=20.323, P<0.001). Using X-tile software to analyze the cut-off value of PTS, it was found that the cut-off value of PTS for contralateral ACL injury was 10.92°. According to the Log-Rank (Mantel-Cox) test, it was found that the contralateral ACL injury occurred in 5.762 (4.981, 6.543) years in patients with PTS≥10.92°, which was significantly shorter than patients with PTS<10.92° [9.751 (9.650, 9.853) years](χ2=302.479, P<0.001). ConclusionFemale and PTS≥10.92° after primary ACL reconstruction are independent risk factors for contralateral ACL injury.
Objective To evaluate the short-term effectiveness of arthroscopic single-bundle reconstruction of anterior cruciate ligament (ACL) being centered within the native ligament’s tibial and femoral insertions with independent drilling of tibial and femoral tunnels. Methods Between September 2008 and September 2010, 33 patients with chronic ACL ruptures underwent arthroscopic reconstruction with four-stranded hamstring tendons in single-bundle. There were 19 males and 14 females, aged 22-33 years (mean, 26.4 years). Injuries were caused by traffic accident in 15 cases, by falling in 13 cases, and by sports in 5 cases. The location was the left knee in 20 cases and the right knee in 13 cases. The average time from injury to surgery was 6 months (range, 2-20 months). ACL reconstruction could be optimized when single-bundle grafts were centered within the native ligament’s tibial and femoral insertions with independent drilling of tibial and femoral tunnels. KT-1000 test, Lachman test, and pivot-shift test were used to evaluate the knee stability, and the International Knee Documentation Committee (IKDC) and Lysholm scores to assess the knee function. Results Primary healing of incision was obtained in all patients, who had no complications of intra-articular infection, deep venous thrombosis of the lower extremity, and injury of blood vessels and nerves. All the patients were followed up 18.6 months on average (range, 13-24 months). At 1 year after operation, the results of Lachman test were negative in 31 cases and I degree positive in 2 cases, showing significant difference when compared with preoperative results (I degree positive in 4, II degree positive in 26, and III degree positive in 3) (Z= — 5.42, P=0.00). The results of pivot-shift test were negative in 31 cases, I degree positive in 2 cases, showing significant difference when compared with preoperative results (I degree positive in 15 and II degree positive in 18) (Z= — 5.17, P=0.00). The KT-1000 results of examination (134 N) showed that the side difference of anterior laxity was (1.2 ± 0.7) mm at 25° flexion and (0.8 ± 0.6) mm at 70° flexion, showing significant differences when compared with preoperative ones [(7.8 ± 2.1) mm and (5.0 ± 1.8) mm] (t=16.19, P=0.00; t=13.28, P=0.00). The IKDC score was significantly increased from 39.6 ± 4.5 at preoperation to 95.1 ± 1.6 at postoperation (t= — 78.88, P=0.00), and Lysholm score was significantly increased from 48.3 ± 3.6 at preoperation to 92.0 ± 2.5 at postoperation (t= — 42.00, P=0.00). Conclusion It is a reliable procedure to restore the stability of the knee that arthroscopic single-bundle reconstruction of ACL is centered within the native ligament’s tibial and femoral insertions with independent drilling of tibial and femoral tunnels.
Objective To evaluate the feasibility of the anterior cruciate ligament (ACL) reconstruction with 6 strands of hamstring tendons enveloped by periosteum. Methods Between April 2008 and April 2009, 34 patients with ACL injury were treated, ACL of whom was reconstructed with 6 strands of hamstring tendons enveloping of periosteum and double Rigidfix fixation. There were 30 males and 4 females, aged 19-54 years with an average of 29.4 years. The causes of injury included sport in 19 cases, traffic accident in 8 cases, falling from height in 5 cases, and other in 2 cases. The locations were left knee in 19 cases and right knee in 15 cases. The disease duration was 3 weeks to 18 months (median, 9.4 months). The results of Lachman test and anterior drawer test were positive. The Lysholm knee score was 61.5 ± 3.6. MRI examination revealed ACL rupture in 26 cases and ACL injury in 8 cases. Results All incisions healed by first intention, and no early complication occurred. Twenty-eight cases were followed up 12-32 months (mean, 16.1 months). The result of Lachman test was negative at 12 months after operation; in all patients, knee extension reached 0°, and flexion reached 120-150° (mean, 132.5°). The AP and lateral X-ray films and MRI showed no bone tunnel expansion. At last follow-up the therapeutic effect evaluation was excellent in 25 cases, good in 1 case, and fair in 2 cases; the excellent and good rate was 92.9%. The postoperative Lysholm score was 91.0 ± 3.2, showing significant difference when compared with preoperative score (t=32.78, P=0.00). Conclusion Six strands of hamstring tendons can ensure sufficient tensile strength, and use of the double Rigidfix absorbable screw makes fixation more reliable. Facing outside suture of periosteal flap can promote tendon-bone healing, so it is a good method of ACL reconstruction.
Objective To analyse and summarize the diagnosis, treatment, and cl inical effects of talus lateral process fracture. Methods Between February 2001 and March 2009, 21 male patients with an average age of 33.6 years (range, 18-46years) with talus lateral process fractures were treated. Fracture was caused by fall ing from height in 18 cases, by tumbl ing in 2 cases, and by sprain in 1 case. According to Hawkins classification, there were 4 cases of type I, 15 cases of type II, and 2 cases of type III, all being closed fractures. The disease course was from 2 hours to 26 days. In 17 patients whose fracture fragments were more than 1 cm × 1 cm × 1 cm or whose fracture fragments shifting was more than 1 mm, open reduction and internal fixation with AO hollow titanium nails were performed in 14 patients, open reduction and internal fixation with door-shape self-made nail in 1 patient, and open reduction and internal fixation with absorbable screws in 2 patients. In 4 patients whose fracture fragments were less than 0.6 cm × 0.5 cm × 0.5 cm or whose fracture fragments shifting was less than 1 mm, fragments removel was performed in 2 patients, Kirschner pins in 1 patient, and plaster conservative therapy in 1 patient. In patients with l igaments injury, the l igaments was reconstructed during the operation. Results All the incisions achieved primary heal ing. Twenty-one patients were followed up 9.5 months to 8 years. No ankle pain occurred and the range of joint motion was normal after operation. The X-ray films showed that all cases achieved fracture union. And the healing time was from 8 weeks to 14 weeks (10 weeks on average). According toAmerican Orthopeadic Foot amp; Ankle Society (AOFAS) for foot, the results were excellent in 17 cases, good in 3 cases, and moderate in 1 case; the excellent and good rate was 95.24%. Conclusion The size and displacement of fracture fragment should be considered first in the treatment of lateral process fracture of talus; in patients who are compl icated by lateral malleolus l igament injury, the l igament should be reconstructed to avoid the chronic non-stabil ity of lateral ankle.
Objective To investigate the method and the short term cl inical effectiveness of in situ suture repair procedure of knee dislocation with multi ple-l igament injury at acute stage. Methods From February 2006 to November 2007, 9 patients suffering from single knee closed dislocation with multi ple-ligament injury underwent open in situ suture repairprocedure with non-absorbable thread and managements of other combined injuries simultaneously. Nine patients included 6 males and 3 females, aged 34-52 years old. The injured knees were left side in 4 cases and right side in 5 cases. Injuries were caused by traffic accident in 8 cases and heavy-weight crushing in 1 case. EMRI and arthroscopic examination showed that all patients suffered from the avulsion injuries of anterior cruciate l igament and posterior cruciate l igament. The time from injury to operation was 4 to 7 days with an average of 5.1 days. Results No bacterial arthritis occurred after operation. Subcutaneous liquated fat occurred and cured after symptomatic treatment in 2 cases, other incisions healed by first intension. All patients were followed up 12 months. At 12 months postoperatively, 2 patients’ flexion range of the suffering knees lost 10° when to compared with normal knees, and the range of motion was from 0 to 125°. The Lysholm knee scores were 83-92 (average 86.3), the results were excellent in 3 cases and good in 6 cases. The posterior drawer test and anterior drawer test were one-degree positive in 3 cases respectively; the Lachman tests were one-degree positive in 5 cases, lateral stress tests were negative in all cases. Conclusion In situ suture repair procedure of knee dislocation with multi ple-ligament injury at acute stage has the advantages such as rel iable fixation, simultaneous management of other combined injuries and satisfactory short term effect.
Objective To investigate the effect of the anterior cruciate l igament (ACL) rupture on the biomechanics of the lateral collateral l igament (LCL). Methods The specimens in this experiment were knee joints from 6 normal fresh adult male cadavers which was donated voluntarily, aged of 26-35 years with an average of 31.4 years. The knee joints were dissymmetry with 3 in left and right sides respectively. At first, all the 6 specimens lying on the self-made movement tooting, whose LCL straining were measured by strain gauges at different angles (0, 30, 60 and 90°) under axial loads of 400 N by e-testing machine for simulation of the normal knee joint force, were regarded as the intact ACL group. Then, the ACL in all 6 specimens were cut off completely as the deficiency group and did the same step. Results The strain of the LCL were as follows at 0, 30, 60 and 90°: (0.00 ± 1.63), (—17.2 ± 8.57), (—24.00 ± 4.80) and (26.50 ± 4.65) με in intact ACL group; (0.75 ± 8.22), (— 52.75 ± 3.33), (24.30 ± 4.99) and (26.30 ± 4.27) με in deficiency group. There was no significant difference at 0° and 90° flexion (P gt; 0.05), but significant difference at 30° and 60° flexion (P lt; 0.05) between the two groups. Conclusion The rupture of the ACL has significantly effect on the strain of the LCL which suffering abnormal load in the state at 30° and 60° flexion. At 30° flexion the relaxation of the LCL increased, which means the possibil ity of the injury of the LCL is rare; and at 60° flexion the LCL become very tense and thereby at the high risk of instabil ity.