The effect of transfixing the hip with Kirschner wire during the operative treatment of hip dysplasia in children after the walking age.

INTRODUCTION: Transfixing the hip joint during operative treatment of DDH is sometimes necessary. MATERIAL AND METHODS: This study included 30 patients presenting with DDH after the walking age divided into two groups; group 1, the hip joint was transfixed with K-wire. Group 2 no k-wire transfixion. RESULTS: At mean follow up duration of 30 months. Satisfactory results were obtained in 13 patients in group 1, and 14 patients for group 2. The final radiological results for both groups were satisfactory in 14 patients. CONCLUSION: Femoral head transfixing with Kirschner wire has no effect on the final results.

Determination of the safe penetration depth during all-inside meniscal repair of the posterior part of the lateral meniscus using the FasT-Fix suture repair system.

PURPOSE: The objective of this study was to determine the safe penetration depth of the FasT-Fix meniscal suture repair system during all-inside repair of the posterior part of the lateral meniscus. METHODS: Thirty-one knees from 17 embalmed and formalin-fixed cadavers (11 women, 6 men) were used. In each case, the circumference of the cadaver knee was measured before dissection. After dissection, 41 Fast-Fix meniscal repair devices were used in different predetermined penetration depths ranging from 8 to 16 mm. In this study, non-involvement of the popliteal neurovascular bundle, common peroneal nerve or the inferior lateral genicular vessels by either needle penetration or affixment by the suture bar anchors was considered to be a safe trial. RESULTS: Out of the 41 FasT-Fix devices used in this study, only one device bent during introduction and was excluded from the study. For the remaining 40 trials, 27 of them were considered safe, while 13 trials were considered unsafe. The ratio of the average penetration depth to the average circumference of the cadaver knee was found to be >0.05 for the unsafe penetrations, and this was statistically significant P < 0.05. Additionally, for the first point, which is more central, there was a trend for the straight needles through the direct lateral approach to be less safe, and this was found to be statistically significant P < 0.05. CONCLUSIONS: Correlating the needle-penetration depth to the measured circumference of the cadaver knee may be an important clinical predictor of safety whereby a ratio of less than 0.05 might be useful as a guide to determine the safe penetration depth of the FasT-Fix suture repair needle during repair of the posterior horn lateral meniscus. Also, it is better to avoid using straight needles through the direct lateral approach during repair of the more central portion of the posterior horn lateral meniscus.

Repair of a large osteochondral defect in the knee joint using autologous and artificial bone graft combined with motion preserving distraction arthroplasty: a case report.

The biological reconstruction of a large osteochondral defect in the weight-bearing area of the knee joint has long been a challenge to orthopedic surgeons. We present a case of a large posttraumatic defect in the weight-bearing area of knee joint treated with a novel distraction arthroplasty device after reconstruction of the joint surface using combined autologous and artificial bone graft.