Comparison of Magnetic Resonance Imaging and Computed Tomography Scans of the Glenoid Version in Anterior Dislocation of the Shoulder.

The glenoid version is an important factor in the etiology of anterior dislocation of the shoulder and the planning of shoulder surgery. Few reports compare the magnetic resonance imaging (MRI) measurements of the glenoid version with those of computed tomography (CT). This study aimed to show that it is possible to use MRI instead of CT, which is accepted as the gold standard today for the evaluation of the glenoid version. A total of 55 patients with a history of 1 nonsurgically treated unilateral anterior dislocation of the shoulder who had both MRI and CT records for the dislocated shoulders constituted the study group. The glenoid version was measured in the axial plane on MRI and CT. Mean glenoid version measured by the observers was -1.6°±4.7° (95% confidence interval, -2.3° to -0.8°) and -1.8°±4.3° (95% confidence interval, -2.5° to -1.2°) by CT and MRI, respectively (P=.126). The evaluation of the CT and MRI measurements made by the 3 observers (X, Y, and Z) revealed no significant difference, as the P values of X CT - X MRI, Y CT - Y MRI, and Z CT - Z MRI were .550, .406, and .238, respectively. Interclass correlation among the 3 observers for CT and MRI was 0.996 and 0.981, respectively. The imaging methods of MRI and CT can be interchangeably used in the evaluation of the glenoid version in cases of anterior dislocation of the shoulder. [Orthopedics. 2017; 40(4):e687-e692.].

Efficacy of intraarticular application of ketamine or ketamine-levobupivacaine combination on post-operative pain after arthroscopic meniscectomy.

PURPOSE: To evaluate the efficacy of intraarticular injection of ketamine or ketamine plus levobupivacaine on post-operative analgesia in patients undergoing arthroscopic meniscectomy. METHODS: A prospective, randomized, double-blind study was performed on 60 patients aged 18-65 years who planned to undergo elective arthroscopic meniscectomy. The patients were divided into three groups: the ketamine group (n = 20) received 1.0 mg/kg of intraarticular ketamine in 20 ml of normal saline, the ketamine-levobupivacaine group (n = 20) received 0.5 mg/kg of intraarticular ketamine plus 50.0 mg of 0.25 % levobupivacaine in 20 ml of normal saline, and the control group (n = 20) received 20 ml of intraarticular normal saline. A visual analogue scale (VAS) was used to determine the efficacy of analgesia at 1, 2, 4, 6, 8, 12, and 24 h post-operatively. RESULTS: There were statistically significant differences in the median VAS scores among the three groups according to Bonferroni adjustment at all time points (p < 0.01), with the exception of 6 and 24 h post-operatively. The median VAS scores at 1, 2, and 4 h post-operatively were higher in the control group than in the two treatment groups (p < 0.001). The median VAS scores in the control group at 1, 2, 4, 6, 8, and 12 h post-operatively and those in the ketamine group at 4, 8, and 12 h post-operatively were significantly higher than those in the ketamine-levobupivacaine group (p < 0.05). CONCLUSION: Intraarticular ketamine provides effective post-operative analgesia. Addition of intraarticular levobupivacaine to ketamine may provide better amelioration of pain after outpatient arthroscopic meniscectomy.