Department of Children's Orthopaedics, Aarhus University Hospital, Nørrebrogade 44, 8000 Aarhus C, Denmark.
Bone Joint J. 2013 Jun;95-B(6):855-60. doi: 10.1302/0301-620X.95B6.29327.
Permanent growth arrest of the longer bone is an option in the treatment of minor leg-length discrepancies. The use of a tension band plating technique to produce a temporary epiphysiodesis is appealing as it avoids the need for accurate timing of the procedure in relation to remaining growth. We performed an animal study to establish if control of growth in a long bone is possible with tension band plating. Animals (pigs) were randomised to temporary epiphysiodesis on either the right or left tibia. Implants were removed after ten weeks. Both tibiae were examined using MRI at baseline, and after ten and 15 weeks. The median interphyseal distance was significantly shorter on the treated tibiae after both ten weeks (p = 0.04) and 15 weeks (p = 0.04). On T1-weighted images the metaphyseal water content was significantly reduced after ten weeks on the treated side (p = 0.04) but returned to values comparable with the untreated side at 15 weeks (p = 0.14). Return of growth was observed in all animals after removal of implants. Temporary epiphysiodesis can be obtained using tension band plating. The technique is not yet in common clinical practice but might avoid the need for the accurate timing of epiphysiodesis.
永久性生长停止是治疗下肢长度差异的一种选择。使用张力带钢板技术来产生临时骺板融合术是很有吸引力的，因为它避免了在与剩余生长相关的准确时间进行手术的需要。我们进行了一项动物研究，以确定张力带钢板是否可以控制长骨的生长。动物（猪）被随机分为右侧或左侧胫骨的临时骺板融合术。植入物在十周后取出。在基线、十周和十五周时，使用 MRI 检查双侧胫骨。在十周（p = 0.04）和十五周（p = 0.04）时，治疗侧的骺间距离明显缩短。在治疗侧，T1 加权图像上的干骺端含水量在十周时显著降低（p = 0.04），但在十五周时恢复到与未治疗侧相当的水平（p = 0.14）。在取出植入物后，所有动物都观察到生长的恢复。使用张力带钢板可以获得临时骺板融合术。该技术尚未在临床常规应用，但可能避免了对骺板融合术进行准确时间安排的需要。
