Repair of KuwadaⅡand Ⅲ Achilles tendon defects through modified medial J-shaped approach with autologous fascia lata transplantation / 中国骨伤

OBJECTIVE@#To investigate the clinical effect of modified medial J-shaped incision of Achilles tendon combined with fascia lata transplantation in the treatment of Kuwada typeⅡand Ⅲ Achilles tendon defects.@*METHODS@#From January 2016 to August 2018, the clinical data of 15 patients with KuwadaⅡand Ⅲ Achilles tendon defects treated with modified J-shaped approach with autologous fascia lata transplantation were retrospectively analyzed, including 14 males and 1 female, with an average age of 31.7 years old ranging from 24 to 43. There were 9 cases of KuwadaⅡdefect and 6 cases of KuwadaⅢ defect. Postoperative observations were made for incision complications, and the Arner-Lindholm scoring standard was used to evaluate the function of the affected foot at the last follow-up.@*RESULTS@#All 15 cases were followed up from 3 to 16 months with an average of 9.2 months. No skin necrosis or infection occurred after operation, and no Achilles tendon rupture occurred again. According to the Arner-Lindholm scoring standard, 13 cases were excellent, 2 cases were good.@*CONCLUSION@#Modified medial J-shaped incision is a satisfactory approach for repairing Achilles tendon defects. It is helpful to prevent postoperative incision complications, which double-strengthen the Achilles tendon strength, so that patients can perform early rehabilitation and functional exercises with satisfactory clinical results.

Case control study on Zero-profile intervertebral fusion system and conventional cage-plate intervertebral fusion system for the treatment of multi-segment cervical spondylosis / 中国骨伤

OBJECTIVE@#To explore the clinical effect in the near future between Zero-profile intervertebral fusion system (Zero-P) and conventional cage-plate intervertebral fusion system (CCP) for the multi-segment(>=2 segments) cervical spondylosis.@*METHODS@#Forty-two patients with cervical spondylosis who underwent multi-segment decompression of the cervical spine from October 2012 to October 2017 were selected as subjects. Zero-P was applied in 21 patients (Zero-P group) and CCP was applied in 21 patients(CCP group). The general condition and perioperative parameters of all the patients were recorded. VAS, JOA scores and incidence of dysphagia were observed before and after operation. The prevertebral soft tissue thickness was measured at 1 week, 1 month after operation and at the last follow-up. At the same time, the Cobb angle of the functional unit of the fusion segments was measured, and the overall curvature change of the cervical vertebra was observed. The clinical efficacy was reviewed at 1 week, 1, 3, 12 months after surgery, and the AP and lateral cervical X-rays were reviewed to evaluate the internal fixation effect.@*RESULTS@#There were no significant differences in age, gender, duration of disease, surgical segment, follow-up time and hospitalization time between two groups(>0.05). The length of the surgical incision, intraoperative blood loss, operation time, postoperative drainage volume in the Zero-P group were(4.37±0.72) cm, (50.9±7.98)ml, (84.4±8.18) min, (76.2±10.13) ml, respectively, and those in CCP group were (6.50±0.71) cm, (108.6±9.25) ml, (118.6±8.55) min, (130.1±9.42) ml, respectively. There were signigicant differences in above items between two groups(0.05). There was no significant difference in the overall physiological curvature of the cervical vertebra between two groups (>0.05). The prevertebral soft tissue thickness at 1 week, 1 month after operation, final follow-up respectively was(11.6±1.9), (9.8±1.4), (9.5±1.6) mm in Zero-P group, and in CCP group those were(12.5±2.6), (11.1±2.4), (11.0±1.9) mm, respectively. There were significant differences in each time point between two groups(<0.05). At the last follow-up, no complication of dysphagia was found in Zero-P group, and three patients had dysphagia in CCP group, with a statistically significant difference between two groups (<0.05).@*CONCLUSIONS@#Multiple segmental decompression fusion to treat cervical spondylosis, regardless of the traditional CCP system or new Zero-P system are effective methods, but the Zero-P system has advantages of small surgical incision, short operation time, less intraoperative bleeding, convenient operation, better recovery of prevertebral soft tissue swelling, and lower possibility of postoperative dysphagia.

The application of biopsy and kyphoplasty in the diagnosis and treatment of osteoporotic thoracolumbar vertebral compression fracture nonunion / 中华外科杂志

<p><b>OBJECTIVES</b>To investigate the clinical efficacy and safety of biopsy and Kyphoplasty in the diagnosis and treatment of osteoporotic thoracolumbar vertebral fracture nonunion, and to explore the clinical characteristics of the disease.</p><p><b>METHODS</b>From July 2005 to May 2010, the clinical data of 8 patients with nonunion of osteoporotic thoracolumbar vertebral fractures were studied. There were 3 males and 5 females, with the mean age of 73.5 years (range, 65 - 86 years). The fracture vertebrae were 3 cases in T(12), 4 in L(1), and 1 in L(2). All cases received radiography, CT and MRI examination. All patients were treated by using Kyphoplasty. Five patients were performed bone biopsy successfully, 3 patients were failed. The curative effect was evaluated by visual analogue scale (VAS), anterior vertebral height restoration at preoperative, postoperative and followed-up time.</p><p><b>RESULTS</b>All patients tolerated the procedure well with immediate relief of back pain after Kyphoplasty. No severe complications were found in all patients. Three cases had the pathologic appearance of sequestrum, 2 cases were sparse cancellous bone, 3 cases were abortive to biopsy. All the patients were followed up of 22.6 months (range, 3 - 37 months), the VAS was 9.5 before operation, 2.1 at the third day postoperatively, there were significant difference between the two phase (P < 0.05), and 2.3 at last follow-up, there were no difference between postoperation and follow-up phase (P > 0.05). And the height of compressed body recovered markedly. The vertebral height had a recovery rate of 67.2% postoperatively, 64.1% and at last follow-up, there were no difference between the two phase (P > 0.05).</p><p><b>CONCLUSIONS</b>Kyphoplasty is an effective and safe method in the treatment of osteoporotic throacolumbar vertebral fracture nonunion. Bone biopsy can play a further role of differential diagnosis.</p>

Keyhole partial laminectomy and tapping technique combined blind transpedicular screw placement in cervical spine / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the clinical efficacy and safety of keyhole partial laminectomy and tapping technique combined blindly transpedicular screw placement in cervical spine.</p><p><b>METHODS</b>Keyhole partial laminectomy and tapping technique combined blindly transpedicular screw placement, was introduced. It was performed in 40 patients. The fusion and screw position were observed in postoperative X-ray and CT, and the breach of pedicle were evaluated. Neurological improvement was followed up.</p><p><b>RESULTS</b>Thirty-one cases were followed up, the mean follow-up period was 35 months. 28 cases screw fixation firmly and fusion completely, 3 cases fusion partly and no screw loosening. only 6.74% had a critical breach. Neurological function were improved in 29 cases of spinal cord injuries, only critical complication in one case.</p><p><b>CONCLUSIONS</b>Keyhole partial laminectomy and tapping technique. combined blind placement is one of most usefull, feasible and safe procedures in transpedicular screw placement of the cervical spine.</p>

Influence of periacetabular muscle contraction on acetabular fractures / 中华创伤杂志

Objective To study the influence of periacetabular muscle contraction on acetabular] fractures.Methods Twenty intact adult cadaveric pelvis(40 hip joints)treated antiseptically with bilat- eral 1/2 femoral shafts were selected and divided randomly into two groups(20 hip joints in each group). Then,the specimens were trimmed to fit the RMT-150B rock mechanics measuring system and the special in- creasing pressure system.After pressure of 3 500 N was pressed to the control group and pressure of 4500 N to the experimental group,acetabular fracture model was made by beatening with special striking machine,when striking force was recorded.Results We made forty aeetabular fracture models from 40 cadaveric hips. Pearson correlation coefficient of pressing force and striking force was -0.923(P＜0.01).The striking force of the control group and the experimental group was 445-550 N and 290-400 N,respectively(t= 14.727,P＜0.01).Conclusion The increase of contraction force of the periaeetabular muscles can decrease aeetabular stress and strain,influence the result of violent injury and play a vital role in inducing acetabular fractures.