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Evaluation of a Novel Bone Substitute Injection Technique for Potential Treatment of Impact Injury to the Equine Palmar Metacarpal Condyle.
Veterinary and Comparative Orthopaedics and Traumatology ( IF 1.0 ) Pub Date : 2019-07-07 , DOI: 10.1055/s-0039-1692984
Hilary C Rice 1 , Matthew T Brokken 1 , Eric T Hostnik 1 , Alicia L Bertone 1
Affiliation  

OBJECTIVE  The aim of this study was to evaluate the injection of a bone substitute material (BSM) into an impact lesion in the palmar condyle of the third metacarpal bone. STUDY DESIGN  This was an in vivo controlled study performed on six horses. MATERIALS AND METHODS  Medial metacarpal condyles were exposed via arthrotomy and a compressive lesion created in anaesthetized horses using 80 psi (27.6 MPa) onto the articular surface (n = 12). Paired limbs were randomly selected as a control or for extra-articular injection of BSM towards the subchondral bone near the compressive lesion. Parameters of the surgical techniques and BSM distribution outcomes were evaluated using magnetic resonance imaging analysis, histology and histomorphometry. RESULTS  Injection of the BSM required significant pressure, as well as the use of a pilot hole. The BSM was visible in all magnetic resonance imagings in treatment limbs. Post-impact treatment limbs had greater average grey scale values than controls (p = 0.041), and greater average grey scale values than pre-impact treatment limbs (p = 0.004). Histology demonstrated haemorrhage and microfractures at the site of compression with no evidence of bone disruption from BSM injection. CONCLUSION  Injection of BSM into the dense subchondral bone of the equine palmar condyle could be targeted to a site of injury, distributed subchondrally and without further injury to bone or cartilage. CLINICAL SIGNIFICANCE  This procedure has potential for the treatment of clinical impact injury or osteoarthritis in horses, and long-term studies are warranted.

中文翻译:

新型骨替代物注射技术对马掌掌Meta突撞击伤的潜在治疗的评估。

目的本研究的目的是评估将骨替代材料(BSM)注射到掌骨第三掌的con突中的病变部位。研究设计这是对六匹马进行的体内对照研究。材料和方法内侧掌omy突通过关节切开术和在麻醉的马中以80 psi(27.6 MPa)压在关节表面(n = 12)产生压迫性病变。随机选择成对的四肢作为对照或向压缩性病变附近的软骨下骨关节外注射BSM。使用磁共振成像分析,组织学和组织形态学方法评估手术技术参数和BSM分布结果。结果BSM的注射需要很大的压力,并且需要使用导向孔。在治疗肢体的所有磁共振成像中均可见到BSM。撞击后治疗肢体的平均灰度值高于对照组(p = 0.041),并且平均灰度值大于撞击前治疗肢体的平均灰度值(p = 0.004)。组织学显示压迫部位有出血和微骨折,没有证据表明注射BSM会破坏骨。结论将BSM注射到马掌con的致密软骨下骨中可靶向损伤部位,分布在软骨下,而不会进一步损伤骨或软骨。临床意义该方法可用于治疗马的临床撞击损伤或骨关节炎,因此需要长期研究。撞击后治疗肢体的平均灰度值高于对照组(p = 0.041),并且平均灰度值大于撞击前治疗肢体的平均灰度值(p = 0.004)。组织学显示压迫部位有出血和微骨折,没有证据表明注射BSM会破坏骨。结论将BSM注射到马掌con的致密软骨下骨中可靶向损伤部位,分布在软骨下,而不会进一步损伤骨或软骨。临床意义该方法可用于治疗马的临床撞击损伤或骨关节炎,因此需要长期研究。撞击后治疗肢体的平均灰度值高于对照组(p = 0.041),并且平均灰度值大于撞击前治疗肢体的平均灰度值(p = 0.004)。组织学显示压迫部位有出血和微骨折,没有证据表明注射BSM会破坏骨。结论将BSM注射到马掌con的致密软骨下骨中可靶向损伤部位,分布在软骨下,而不会进一步损伤骨或软骨。临床意义该方法可用于治疗马的临床撞击损伤或骨关节炎,因此需要长期研究。组织学显示压迫部位有出血和微骨折,没有证据表明注射BSM会破坏骨。结论将BSM注射到马掌con的致密软骨下骨中可靶向损伤部位,分布在软骨下,而不会进一步损伤骨或软骨。临床意义该方法可用于治疗马的临床撞击损伤或骨关节炎,因此需要长期研究。组织学显示压迫部位有出血和微骨折,没有证据表明注射BSM会破坏骨。结论将BSM注射到马掌con的致密软骨下骨中可靶向损伤部位,分布在软骨下,而不会进一步损伤骨或软骨。临床意义该方法可用于治疗马的临床撞击损伤或骨关节炎,因此需要长期研究。
更新日期:2019-11-01
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