The shoulder joint is the most prone to dislocation in the whole body, and more than 95% of them are anterior dislocation. Improper treatment after the initial dislocation is easy to lead to recurrent anterior dislocation or anterior shoulder instability, and the outcomes following conservative treatment is poor. Anterior shoulder instability can damage the soft tissue structure and bone structure that maintain the stability of shoulder joint, among which bone structure is the most important factor affecting the stability of shoulder joint. Diagnosis should be combined with medical history, physical examination, and auxiliary examination. Currently, three-dimensional CT is the most commonly used auxiliary examination means. However, various bone defect measurement and preoperative evaluation methods based on three-dimensional CT and the glenoid track theory have their own advantages and disadvantages, and there is still a lack of gold standard. Currently, the mainstream treatment methods mainly include Bankart procedure, coracoid process transposition, glenoid reconstruction with free bone graft, Bankart combined with Remplissage procedure, and subscapular tendon binding tamponade, etc. Each of these procedures has its own advantages and disadvantages. For the diagnosis and treatment of anterior shoulder instability, there are still too many unknown, further research and exploration need to be studied.
ObjectiveTo summarize the application status and progress of the strategies to augment tendon-to-bone healing. MethodsThe present researches focused on augmentation of tendon-to-bone healing were extensively reviewed. ResultsThe present strategies to augment healing of tendon-to-bone by enhancing the location environment, and increasing the cell numbers and relative growth factor. The mainly strategies include using calcium phosphate materials, biocompatible scaffolds and glue, growth factors, cell matrix, platelet-rich plasma, and periosteum. Although periosteum have been used in clinical and got some possitive effects, the others still not be used in clinical and needs further studies. ConclusionThere are many strategies to enhance the ability of tendon-to-bone healing, which got some positive results, but results of studies were varied. Thus, further fundamental research and clinical studies are required to achieve the best effects.
ObjectiveTo summarize the diagnosis and measurement methods of bone defect in anterior shoulder instability (glenoid bone defect and Hill-Sachs lesion).MethodsThe related literature on the diagnosis and measurement of the bone defect in anterior shoulder instability was reviewed and summarized.ResultsThe commonly used techniques for the diagnosis of anterior glenoid bone defect and Hill-Sachs lesion of humeral head include X-ray, CT, MRI, arthroscopy, arthrography. The methods for measuring the degree of anterior glenoid bone defect include Griffith method, glenoid index method, Pico method, and best-fit circle method. The indexes for measuring the Hill-Sachs lesion include the length, width, depth, and volume. X-ray is mainly used for primary screening. Best-fit circle method on three-dimensional (3D) CT reconstruction is commonly used to measure the glenoid bone defect currently. Glenoid track theory on 3D CT reconstruction is popular in recent years. Reliability of measuring the glenoid bone defect and Hill-Sachs lesion with MRI and arthroscopy is still debatable. Arthrography is more and more used in the diagnosis of shoulder joint instability of bone defect and concomitant soft tissue injury.ConclusionHow to improve the accuracy of evaluating glenoid bone defect and Hill-Sachs lesion before surgery still need further study.
Objective To review the research progress of diagnosis and treatment system for knee dislocation (KD) based on the stage and classification of posteromedial structure and posterolateral corner injury, so as to provide guidance for clinical work. Methods The relevant literature on the classification, diagnosis and treatment was extensively reviewed. Results At present, the criterion of the stage and classification of KD mainly include classification based on the size of the injury energy, Kennedy classification, and the improved Schenck classification, but they are not perfect because of no stage and classification of multiple ligament injury and no standardized treatment of different injuries. Hua Xi Knee Dislocation and Multiple Ligament Injury (HX-KDMLI) has optimum plan for injury treatment of posteromedial structure and posterolateral corner injury in KD based on stage and classification. Conclusion At present, there is no unified opinion on stages and classifications of the posteromedial structure and posterolateral corner injury in KD as well as on diagnosis and treatment. HX-KDMLI has certain feasibility for the stage and classification of the posteromedial structure and posterolateral corner injury in KD, to a certain extent, it can be used as reference for the diagnosis and treatment of KD.
ObjectiveTo investigate the method and effectiveness of transosseous suture in situ technique in repairing anterior cruciate ligament (ACL) avulsion injury for the multiple ligament injuries with knee dislocation (MLIKD).MethodsThe clinical data of 27 patients (27 knees) with MLIKD between September 2010 and April 2016 were analyzed retrospectively. There were 21 males and 6 females, with an average age of 42 years (range, 24-60 years). The injury was caused by traffic accident in 9 cases, heavy-weight crushing in 9 cases, sports sprain in 6 cases, falling from height in 3 cases. The interval from injury to operation was 1-19 days (mean,10.8 days). There were 20 cases of femoral avulsion injury of ACL, 7 cases of tibial avulsion injury of ACL, and there were 17 cases of posterior cruciate ligament (PCL) injuries. According to the Schenck classification, there were 15 cases of KD-Ⅲ-M type, 8 cases of KD-Ⅲ-L type, and 4 cases of KD-Ⅳ type. All patients were positive in the posterior drawer test and Lachman test; 8 cases were degree Ⅲ positive in varus stress test, and 15 cases were degree Ⅲ positive in valgus stress test. The Lysholm score of knee was 27.6±6.5, the International Knee Documentation Committee (IKDC) score was 25.5±6.2, and the range of motion (ROM) of knee was (45.1±10.2)°. The injured PCL was reconstructed with a single bundle of autologous hamstring tendon. ACL was repaired with double bundle traction by transosseous suture in situ technique. Medial cruciate ligament, lateral cruciate ligament, joint capsule, and other damaged structures were repaired at the same time.ResultsAll incisions healed by first intention. There were 3 cases with joint effusion and 3 cases with incomplete flexion. All patients were followed up 12-36 months (mean, 22 months). The X-ray films showed good stability in all directions. At last follow-up, the anterior and posterior drawer tests were all negative; Lachman test was degreeⅠpositive in 4 cases, valgus stress test was degreeⅠpositive in 3 cases, varus stress test was degreeⅠpositive in 1 case; and all tests were negative in the rest patients. At 1 year after operation, the ROM of knee was (119.3 ±12.6)°, Lysholm score was 87.2±6.3, and IKDC score was 87.9±6.3, showing significant differences when compared with the preoperative scores (P<0.05).ConclusionTransosseous suture in situ technique can be used to repair the ACL avulsion injury for MLIKD, which can significantly improve the stability, mobility and function of the knee joint, and obtain satisfied short-term effectiveness.
Objective To investigate the method and the effectiveness of arthroscopy and/or arthrotomy combinedwith postoperative radiotherapy for diffuse pigmented villonodular synovitis (PVNS) of the knee. Methods BetweenSeptember 2000 and August 2010, 97 patients with diffuse PVNS of the knee were treated. There were 38 males and 59 femaleswith a median age of 33 years (range, 8-75 years). The disease duration ranged from 1 week to 30 years, including 52 left kneesand 45 right knees. There were 10 recurrent cases. The extention and flexion of the knee joint were (1.9 ± 2.3)° and (122.9 ± 5.6)°,respectively; the Lysholm score was 43.2 ± 6.7; and the International Knee Documentation Committee (IKDC) score was53.2 ± 5.7, preoperatively. According to the scope and degree of the knee joint lesions, simultaneous anterior and posteriorsynovectomy was performed under arthroscopy in 82 cases, synovectomy under arthroscopy and removal of posterior extraarticularlesion by arthrotomy in 3 cases, synovectomy and the soft tissue lesions resection under arthroscopy in 9 cases, andstaging resection and bone graft in 3 cases. After operation, 76 patients received postoperative radiotherapy. Results Poplitealartery was injuryed in 1 case and the branch of popl iteal veins were injuryed in 3 cases during operation. Intra-articularhemorrhage occurred in 1 case at 3 days after operation. The other patients achieved heal ing of incision by first intentionwithout nerve damage and other complications. All patients were followed up 1 year and 3 months to 11 years and 2 months(median, 61 months) postoperatively. During follow-up, 89 cases had no relapse. At 15 months after operation, the extentionand flexion of the knee joint were (0.2 ± 1.3)° and (135.9 ± 6.6)°, respectively; the Lysholm score was 89.8 ± 5.8; and the IKDCscore was 87.8 ± 5.8. All indexes were significantly improved when compared with the preoperative ones (P lt; 0.05). At 6 monthsto 8 years postoperatively, 8 cases had occurrence, and they had sl ight limitation of the range of motion but had no pain andswelling of the knees after reoperation. Conclusion According to the scope and degree of the knee joint lesions, arthroscopyand/or arthrotomy combined with postoperative radiotherapy should be chosen for diffuse PVNS of the knee so as to obtain good effectiveness. Radiotherapy and enough total radiation dose are important factors to insure no recurrence.
Objective To evaluate the surgical procedure and short-term effectiveness of one-stage repair and reconstruction of knee dislocation with multiple ligament injuries (KDMLI). Methods Between September 2010 and April 2014, 9 cases (9 knees) of KDMLI were treated. There were 7 males and 2 females with an average age of 42 years (range, 27-57 years). Injury was caused by traffic accident in 3 cases, heavy-weight crushing in 3 cases, sports sprain in 2 cases, and falling from height in 1 case. The average time from injury to operation was 11 days (range, 3-19 days). The results of posterior drawer test and Lachman test were positive in all patients. The results of varus stress testing were three-degree positive in 4 cases, and the results of valgus stress testing were three-degree positive in 6 cases. The Lysholm score of knee was 27.2±6.3; the International Knee Documentation Committee (IKDC) score was 29.7±6.5; and the range of motion (ROM) was (52.6±12.8)°. All patients suffered from posterior cruciate ligament (PCL) injury and femoral avulsion injury of anterior cruciate ligament (ACL). Combined injuries included medial collateral ligament (MCL) injury in 4 cases (medial meniscus injury in 1 case), lateral collateral ligament (LCL) injury in 2 cases, and MCL and LCL injuries in 2 cases (medial meniscus and lateral meniscus injuries in 1 case). Autologous harmstring tendon was used to reconstruct PCL under arthroscopy combined with limited open in situ suture for repair of femoral avulsion injury of ACL, and repair of MCL, LCL, and other injury in one-stage operation. Results All incisions healed by first intention. Joint effusion of knee occurred in 1 case and was cured after removal of fluid combined with pressure bandage. All patients were followed up 12-36 months with an average of 22 months. At last follow-up, the result of posterior drawer test was negative in all patients. The results of Lachman test were one-degree positive in 2 cases; the result of varus stress testing was one-degree positive in 1 case; the results of valgus stress testing were one-degree positive in 2 cases; and flexion dysfunction of the knee was observed in 1 case. The Lysholm score of knee was 87.3±6.6; the IKDC score was 88.9±6.8; and the ROM was (121.7±12.3)°, all showing significant differences when compared with preoperative ones (t=44.246, P=0.000; t=37.903, P=0.000; t=19.894, P=0.000). Conclusion For KDMLI, one-stage repair and reconstruction using autologous harmstring tendon to reconst ruct PCL under arthroscopy combined with limited open in situ suture repair of femoral avulsion injury of ACL, and repair MCL, LCL, and other injury has such advantages as minimal invasiveness, reliable fixation, less complications, and fast recovery, which can significantly improve the stability, ROM, and function of knee and obtain good short-term effectiveness.