Correlations between MRI evaluation and clinical examination after anterior cruciate ligament reconstruction / 局解手术学杂志

Objective To evaluate the morphological and signal intensity changes after anterior cruciate ligament reconstruction , and to analyze the correlations between MRI evaluation and clinical examination .Methods Totally 34 patients who underwent anterior cruciate liga-ment reconstruction in our hospital from July 2013 to June 2015 were given MRI examination .The morphology ,orientation and signal intensity of the anterior cruciate ligament grafts were evaluated on axial ,sagittal and coronal images .The grafts were assessed with Rak method ,and the clinical assessment was adopted with physical assessment method ,including drawer test ,axial shift test and Lachman test .The correlations be-tween MRI evaluation and clinical examination results were further analyzed by SPSS 16.0.Results After anterior cruciate ligament recon-struction,79%of the graft were visualized as a smoothly continuous low signal (well-defined type),15%of the graft showed increased signal intensity with only a small part of low signal bands ( intermediate type ) ,and 6% of the grafts showed remarkably increased signal intensity (indiscernible type).A statistically significant correlation was identified in MRI evaluation and clinical examination results (P<0.05). Spearman’ s correlation coefficient was 0.747 2 which indicating significantly positive correlation .Conclusion Magnetic resonance imaging is a noninvasive high-resolution imaging technology and it is an effective tool for evaluating anterior cruciate ligament reconstruction .

Arthroscopic synovectomy and postoperative assisted radiotherapy for treating diffuse pigmented villonodular synovitis of the knee: an observational retrospective study

This retrospective observational study aims to explore the treatment procedure and outcomes of arthroscopically assisted radiotherapy for diffuse pigmented villonodular synovitis [PVNS] of the knee joint. From September 2006 to August 2011, 28 diffuse PVNS patients were diagnosed and treated under arthroscopy. Twenty six underwent post-operative radiotherapy. All patients were followed up, and the average follow-up period was 54 months [range: 24 to 72 months]. All 26 patients who received external radiotherapy showed no recurrence at post-operative follow-up; The Lysholm knee joint function score increased from 54.3 +/- 9.0 at pre-operation to 71.2 +/- 6.7 at post-operation [paired t-test, t = -13.35, P<0.01]. Arthroscopic synovectomy is an ideal treatment for PVNS of the knee. Adjuvant post-operative external radiotherapy prevents the recurrence of diffuse PVNS