Objective To evaluate the techniques and effects of arthroscopic resection of cystic lesions of soft tissue. Methods Twenty-six patients with soft tissue cysts underwent arthroscopic shaving of cyst wall from February 1998 to February 2001. Results Follow-up observation ranged from 6 months to 12 months, with a mean of 8.6 months. The total effective rate reached 96.2% (25 of 26), and no postoperative complications occurred. Recurrence was only seen in 1 patient with thecal cyst on the right dorsal wrist. Conclusions Arthroscopic resection of cystic lesions of soft tissue can be a less invasive method, with fewer complications, a high effective rate and a rapid recovery.

BACKGROUND:The blood supply is essential for the repair of the meniscus after the suture of it in the injured knee joint. According to the condition of blood supply, the meniscus was divided into three zones by Arnoczk in 1982. The absolute vascularization zone, in which the distance to the combination part of meniscus and synovial membrane is inferior to 3mm, is called the red zone. The absolute devascularization zone, in which the above-mentioned distance is superior to 5 mm, is called the white zone.And the relative vascularization zone with the distance between 3 mm to 5mm is called red-white zone.OBJECTIVE: To observe and discuss the anatomical features of the blood supplyof the meniscus.DESIGN:Single sample observation.SETTING:Department of Orthopaedics, Huaxi Hospital of Sichuan University.PARTICIPANTS: The study was conducted in Huaxi Hospital of Sichuan University during the period from September 2000 to March 2001.Nineteen cases were collected, including 19 knees (38 menisci) from the subjects, 17 male and 2 female, whose age varied from 21 to 43 years old.All the samples were obtained in the amputation operation, the isolated limbs were without the change of re-transplantation and the voluntary donations from the non-minorities living in Sichuan.meniscus samples: 7 knees (14 menisci) were taken. After the femoral artery intubation and infusion of the heparinized normal saline, the vascular bed had no blood and then was infused with the normal saline and ink of 0.5 volume fraction and the infusion pressure was 13 kPa. The infused meniscus samples underwent the dehydration of gradient ethanol,the transparency of dimethylbenzene, and preservation with ilex pedunculosa, and then the blood supply of the menisci was observed and distribution of the meniscus section: 6 knees (12 menisci) with fresh and uninfused menisci were taken. The sections obtained at the sagittal plane,the coronal plane and the horizontal plane underwent hematoxylin-eosin staining. Then the tissues structure and blood supply of the meniscus samples were observed with light microscope. Another 6 knees (12meniscus) underwent the specific CD34 antibody immunohistochemical staining. Then the tissue structure and blood supply distribution of the meniscus samples were observed with the light microscope.in the devascularization zone of the meniscus.RESULTS: Nineteen cases with 38 menisci all went into the final result resourced from the medial and lateral genicular arteries and the middle genicular artery. The small vessels from them form the peripheral capillary vessel plexus and annular vessel meshwork in the synovium and joint capsule and then go into the menisci for the nutrition of the lateral The apparent lunar artery is sent by the vessel plexus around the meniscus into the body of the meniscus and arranges in the inferior,middle and superior layers and dominates 25%-30% of the zone around The vessels of the angular part of the semilunar plate cover the whole meniscus. The nutrition is supplied by the membranous synovium on the surface of the meniscus.Rich blood supply was observed in the anterior and posterior angular laminated blood supply in the body of the meniscus was newly devascularization zone of the meniscus is supplied from the joint synovial fluid is explicit.

Objective To evaluate the long-term efficacy of vascularized pisiform transfer for patients with Kienb(o)ck's disease in Lichtman stages Ⅲ-Ⅳ. Methods Eleven patients were reviewed to analyze results after lunate resection and vascularized pisiform transfer for Lichtman stages Ⅲ and Ⅳ. There were six men and five women. Age ranged from 20 to 67 years with a average of 41.0±14.3 years. According to Lichtman stage. There were 4 cases in stage Ⅲa, 5 cases in stage Ⅲb, and 2 cases in stage Ⅳ. Assessment criteria included subjective assessment of pain, visual analogue scale (VAS), range of motion (ROM), grip power,Cooney wrist score and radiographic changes on each follow-up visit. The radiographic changes including pis iform bone location, shape, sclerosis change, osteoarthritis, carpal height ratio, Nattrass index, Radioscaphoid angle and ulnar variance were recorded. Results The follow-up periods of all of cases were 61-202 months,with an average of 104.1 months. Pain had improved in 10 patients and disappeared in 7 cases. The VAS score was 2.2±1.9 at follow-up visit. Range of motion of injured wristw as only 65.3% of opposite side. Grip power was 84.3% of the contralateral hand. According to Cooney score, the results were excellent in 1 case, good in 7cases, fair in 2 cases and poor in 1 case, with the excellent and good rate of 72.7%. Radiologically, 8 cases had normal position of the pisiform bone, 2 had volar displacement and 1 had ulnar displacement which leaded to widen scaphopisiform space. Six pisiform bones had normal trabecular structure, three had degenerative changes. Bone sclerosis was seen in 2 cases and osteoarthritis was found in 3 patients. Compared with radiographic parameter before surgery, carpal height ratio and Nattrass index significantly lowered and radioscaphoid angle significantly increased. Conclusion Lunate resection and vascularized pisiform transfer is an effective method for Kienb(o)k′s disease in stages Ⅲ-Ⅳ. Although carpal collapse appeared postoperatively,the results show high patient satisfaction and good function after vascularized bone transplantation.

Objective To investigate the clinical characteristics and therapeutic methods of bac-terial colonization and infection of Acinetobacter baumannii on the wound of earthquake induced patients. Methods A retrospective study was done on 42 Wenehuan earthquake induced patients with positive wound germiculture of Acinetobacter baumannii. There were 24 males and 18 females, at mean age of 37 years (12-96 years). Open injury was located at the upper arm in one patient, at the forearm in four, at the thigh in 12, at the calf in 23 and at the trunk in two. The time between injury and treatment varied from 3 to 7 days. The clinical characteristics including the bacteria identification and drug sensitivity test were studied to compare drug resistance to 15 antibiotics. Results Bacterial colonization of Acineto-bacter baumannii was found in 31 patients (8.2%) and infection of Acinetobacter baumannii in 11 (2.9%). After debridement, pruphylactic antibiotics and nutrition support, 15 patients with bacterial colonization were managed with Ⅱ stage suture or skin grafting. The other 16 patients were transferred to hospitals of other provinces after germiculture turned negative. Through debridement and drainage, antibi-otic therapy and nutrition support, the infection was controlled and the wound eliminated in six patients through Ⅱ stage suture but four were concomitant with pulmonary infection and one with septicemia. Drug sensitivity test showed that sensitive rate to imipenem, amikacin, levofloxacin, ticarcillin-clavulanic acid, tobramycin were 59.5%, 21.4%, 21.4%, 19.5% and 19.0% respectively. Conclusions The risk factors of infection of Acinetobacter baumannii include severe tissue trauma, severe wound contamination, delayed treatment and weak body resistance. During treatment, the bacterial colonization and infection of Acinetobacter baumannii should be distinguished and treated respectively. Correct wound treatment, suit-able antibiotic therapy and increased body resistance are key to improvement of clinical curative effect.

Objective:To compare the clinical efficacy between femoral neck system (FNS) and inverted cannulated compression screws (ICCS) in the fixation of adult femoral neck fracture.Methods:The clinical data were retrospectively analyzed of the 119 patients with femoral neck fracture who had received FNS or ICCS internal fixation at Department of Traumatic Orthopedics, West China Hospital from September 2019 to June 2020. They were divided into 2 groups according to their internal fixation methods. In the FNS group of 62 patients, there were 38 males and 24 females, with an age of (54.0±13.0) years, and 13 cases of type Ⅱ, 34 cases of type Ⅲ and 15 cases of type Ⅳ according to the Garden classification; in the ICCS group of 57 patients, there were 42 males and 15 females, with an age of (53.2±11.3) years, and 9 cases of type Ⅱ, 33 cases of type Ⅲ and 15 cases of type Ⅳ according to the Garden classification. The operation time, intraoperative blood loss, fluoroscopy frequency, hospitalization time, fracture healing time, Harris hip score and incidence of complications were compared between the 2 groups.Results:The 2 groups were comparable due to insignificant differences in their preoperative general data or follow-up duration ( P>0.05). There were significant differences between the FNS and ICCS groups in fluoroscopy frequency [(8.8±2.9) times versus (15.6±3.4) times], operation time [(45.2±10.1) min versus (51.8±11.7) min], fracture healing time [(3.2±0.4) months versus (4.0±0.6) months], Harris hip score at the last follow-up [(91.8±4.4) points versus (84.6±3.3) points], and femoral neck shortening at the last follow-up, favoring the FNS group (all P<0.05). There were no significant differences in follow-up time, hospitalization time, intraoperative blood loss or incidence of complications between the 2 groups ( P>0.05). Conclusions:In the fixation of adult femoral neck fractures, compared with ICCS, FNS can significantly reduce fluoroscopy frequency, shorten fracture healing and operation time, reduce risk of femoral neck shortening and hospitalization time, and promote functional recovery of the hip.