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Objective: To investigate the effect of bone graft volume on postoperative fusion and symptom improvement in lumbar posterior lumbar fusion and internal fixation
Methods: A total of 82 patients receiving pedicle screw rod system internal fixation with Cage bone graft fusion in the First Hospital of Baoding City, Hebei Province were selected and randomly divided into three groups. The excised autologous laminar bones were bitten into different sizes of bone fragments. And different sizes of bone grafts were implanted during the operation. Group-A [n=28] was implanted by bone graft granule with the average volume of 0.2 cm[3], Group-B [n=27] was implanted by bone graft granule with the average volume of 0.1 cm[3], and Group-C [n=27] was implanted by bone graft granule with the average volume of 0.05 cm3. The bone graft granule volume, clinical effect, bone graft fusion rate and intervertebral space height were compared
Results: The three groups had significantly different bone graft granule volumes [P<0.05], but similar intervertebral bone graft total volumes and Cage heights [P>0.05]. In the final follow-up, VAS and ODI of low back pain and two lower limbs pain significantly reduced compared with those before surgery [P<0.05], but the three groups had similar results [P>0.05]. The bone graft fusions of Group-B one and two years after surgery were significantly higher than those of Group-A and Group-C, and the values of Group-A exceeded those of Group-C [P<0.05]. In the final follow-up, the intervertebral space height change of Group-B was significantly smaller than those of Group-A and Group-C [P<0.05]
Conclusion: Size of bone graft granule has no significant effect on postoperative symptoms. However, middle-sized volume bone graft granule [0.1 cm[3]/granule] showed increased postoperative intervertebral fusion rate and reduced intervertebral space height loss in our study
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BACKGROUND: Graft selection and histological fate for anterior cruciate ligament reconstruction is a hot topic in the fields of reconstruction and repair of anterior cruciate ligament.OBJECTIVE: To review structure of anterior cruciate ligament and graft selection.METHODS: Articles were retrieved from Medline database with the key words of "Anterior cruciate ligament, implant,reconstruction" between January 1980 and January 2010. inclusion criteria: ① Reconstructive surgery of anterior cruciate ligament injury; ② graft selection of anterior cruciate ligament. Exclusion criteria: ① the old literatures; ② repetitive studies. A total of articles related to reconstruction of anterior cruciate ligament were retrieved, but 33 ones were included in the final analysis. The old, duplicated, and similar studies were excluded.RESULTS AND CONCLUSION: At present, the major therapy for anterior cruciate ligament injury includes arthroscopy and arthroscopy-assisted reconstruction. For clincal application, there are a lot of grafts, including autogenous grafts, allografts,heterologous allograft, biological materials, artificial materials and tissue engineering grafts. Autogenous semitendinosus tendon and gracilis tendon or autogenous bone-patellar tendon (middle 1/3)-bone (BPTB) are mainly used for anterior cruciate ligament reconstruction at home and abroad.
RESUMEN
Objective To sum up a new surgical method to treat knee ankylosis with skeletal traction following arthrolysis. Methods Skeletal traction through supracondyle of femur or through patella was applied for 48 patients with knee ankylosis after dissection of both intra and extra articular adhesion and quadricepsplasty. Results The follow up period ranged from 3 to 36 months. The flexion angles of the knee joint increased 70?to 105?in 34 patients. Conclusion Skeletal traction following arthrolysis to treat knee ankylosis can prolong the length of quadriceps,increase the flexion angle of the knee joint step by step and facilitate early functional recovery after operation.