Grigorios Mitsionis

Publications (3)9.95 Total impact

• Article: Endoscopic versus open carpal tunnel release.

  Haris S Vasiliadis, Theodoros A Xenakis, Grigorios Mitsionis, Nikolaos Paschos, Anastasios Georgoulis
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  ABSTRACT: This study compared endoscopic carpal tunnel release with the conventional open technique with respect to short- and long-term improvements in functional and clinical outcomes. We assessed 72 outpatients diagnosed with carpal tunnel syndrome. Of these patients, 37 underwent the endoscopic method according to Chow and 35 were assigned to the open method. Improvement in symptoms, severity, and functionality were evaluated at 2 days, 1 week, 2 weeks, and 1 year postoperatively. Changes in clinical outcomes were evaluated at 1 year postoperatively. Complications were also assessed. Both groups showed similar improvement in all but 1 outcome 1 year after the release; increase in grip strength was significantly higher in the endoscopic group. However, the endoscopic method showed a greater improvement in symptoms and functional status compared with the open method at 2 days, 1 week, and 2 weeks postoperatively. Separate analysis of the questions referring to pain showed that the delay in improvement in the open group was because of the persistence of pain for a longer period. Paresthesias and numbness decrease immediately after the operation with comparable rates for both groups. Endoscopic carpal tunnel release provides a faster recovery to operated patients for the first 2 weeks, with faster relief of pain and faster improvement in functional abilities. Paresthesia and numbness subside in an identical manner with the 2 techniques. At 1 year postoperatively, both open and endoscopic techniques seem to be equivalently efficient.
  Arthroscopy The Journal of Arthroscopic and Related Surgery 01/2010; 26(1):26-33. · 3.02 Impact Factor
• Article: Effect of femoral tunnel placement for reconstruction of the anterior cruciate ligament on tibial rotation.

  Stavros Ristanis, Nicholas Stergiou, Eleftheria Siarava, Aikaterini Ntoulia, Grigorios Mitsionis, Anastasios D Georgoulis
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  ABSTRACT: Rotational knee movement after reconstruction of the anterior cruciate ligament has been difficult to quantify. The purpose of this study was to identify in vivo whether a more horizontal placement of the femoral tunnel (in the ten o'clock position rather than in the eleven o'clock position) can restore rotational kinematics, during highly demanding dynamic activities, in a knee in which a bone-patellar tendon-bone graft had been used to reconstruct the anterior cruciate ligament. We evaluated ten patients in whom a bone-patellar tendon-bone graft had been used to reconstruct the anterior cruciate ligament with the femoral tunnel in the eleven o'clock position, ten patients who had had the same procedure with the femoral tunnel in the ten o'clock position, and ten healthy controls. Kinematic data were collected while the subjects (1) descended from a stairway, made foot contact, and then pivoted 90 degrees on the landing lower limb and (2) jumped from a platform, landed with both feet on the ground, and pivoted 90 degrees on the right or left lower limb. The dependent variable that we examined was tibial rotation during pivoting. The results demonstrated that reconstruction of the anterior cruciate ligament with the femoral tunnel in either the ten or the eleven o'clock position successfully restored anterior tibial translation. However, both techniques resulted in tibial rotation values, during the dynamic activities evaluated, that were significantly larger than those in the intact contralateral lower limbs and those in the healthy controls. Tibial rotation did not differ significantly between the two reconstruction groups or between the healthy controls and the intact contralateral lower limbs. However, we noticed that positioning the tunnel at ten o'clock resulted in slightly decreased rotation values that may have clinical relevance but not statistical significance. Regardless of which of the two tested positions was utilized to fix the graft to the femur, reconstruction of the anterior cruciate ligament did not restore normal tibial rotation during dynamic activities.
  The Journal of Bone and Joint Surgery 10/2009; 91(9):2151-8. · 3.27 Impact Factor
• Article: End-to-side nerve repair in peripheral nerve injury.

  Alexandros Beris, Marios Lykissas, Anastasios Korompilias, Grigorios Mitsionis
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  ABSTRACT: In peripheral nerve injury, end-to-side neurorrhaphy has been reported as an alternative in cases that the proximal nerve stump is not accessible. Several hypotheses have been proposed to explain peripheral nerve regeneration after end-to-side neurorrhaphy. Recent evidence suggests that nerve regeneration occurs by collateral sprouting. Although a great number of humoral factors have been identified, molecular mechanism of nerve regeneration after end-to-side neurorrhaphy has not been completely clarified yet. The goal of this technique is to provide satisfactory functional recovery for the recipient nerve, without any deterioration of the donor nerve function. End-to-side technique has been investigated in detail in both experimental and clinical studies. Only a limited number of reported cases in clinical practice, until today, can reveal that end-to-side technique may become a viable means of repairing peripheral nerves in certain clinical situations.
  Journal of Neurotrauma 06/2007; 24(5):909-16. · 3.65 Impact Factor