n in vivo comparison of the modified Mason-Allen suture echnique versus an inclined horizontal mattress suture echnique with regard to tendon-to-bone healing: A iomechanical and histologic study in sheep
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چکیده
s H w M fi he purpose of this study is to examine long-term endon-to-bone healing, by use of a sheep animal odel, after rotator cuff repairs performed with 2 diferent suture techniques: an inclined horizontal matress suture pattern placed with special arthroscopic nstrumentation (HMS) and the modified Mason-Allen attern (MMA). After a pre hoc power analysis, 18 keletally mature sheep were randomly assigned to ither the HMS or MMA repair technique, with conralateral limbs used for the control group. At 26 eeks, the animals were euthanized. Six sheep from ach group underwent biomechanical testing. Load-toailure and stiffness results indicated no statistically ignificant difference between the 2 groups. Avulsion f the tuberosity was the primary mode of failure for oth groups. In the remaining 6 sheep, histologic evalation demonstrated that, regardless of treatment, the endon appeared completely healed in the bony rough. Because the long-term biomechanical and hisologic properties of healed tendons repaired with an MA technique are equal to those obtained with an MA technique, the inclined horizontal mattress suture ay be appropriate for arthroscopic rotator cuff reair. Short-term studies are necessary to determine hether these findings are true early after tendon reair, when failure may be most common. (J Shoulder lbow Surg 2007;16:115-121.)
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Use of Undifferentiated Cultured Bone Marrow-Derived Mesenchymal Stem Cells for DDF Tendon Injuries Repair in Rabbits: A Quantitative and Qualitative Histopathological Study
Objective- To investigate the effect of intratendinous injection of bMSCs on the rate and extent of tendon healing after primary repair in a rabbit model. Design- Experimental study. Animals- Twenty seven skeletally mature New Zealand white rabbits weighing 1.8- 2.5 kg were used. Twenty rabbits were used as the experimental animals, and seven others were used as a source of bone marrow-derived ...
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