Scapular Dyskinesis

PURPOSE: Scapular dyskinesis is an alteration in the normal position or motion of the scapula during coupled scapulohumeral movements. Vast majority of shoulder pathologies are known to be related with scapular motion abnormalities. Because there being enthusiasm about scapular pathology in recent literatures, understanding scapular dyskinesis seems to be an important subject. The authors describe the importance of scapular abnormality in terms of shoulder pathology. MATERIALS AND METHODS: Usually the inhibition or disorganization of activation patterns in scapular stabilizing muscles lead to scapular dyskinesis. This motion abnormality has more important values in Elite Athletes because it might be the sign of future shoulder pathology; for example, SLAP and internal impingement. Treatment of scapular dyskinesis is directed at managing underlying causes and restoring normal scapular muscle activation patterns by kinetic chain-based rehabilitation protocols. Treatment is also important to prevent secondary shoulder injuries. RESULTS AND CONCLUSION: Understanding scapular pathology may be the main key to approach to the shoulder pathology. Also treating scapular pathology might be important in preventing secondary shoulder injuries.

Total Hip Arthroplasty with Hydroxyapatite-Coated Anatomic Femoral Stem / 대한정형외과학회잡지

PURPOSE: To evaluate minimum 5-year results of total hip arthroplasty using a hydroxyapatite (HA)-coated anatomic femoral stem. MATERIALS AND METHODS: Fifty hips in 46 patients, received total hip arthroplasty using a HA-coated anatomic femoral component, between March 1992 and April 1995, 39 hips (36 patients) were available for this study. RESULTS: The mean preoperative Harris hip score of 55.2 points increased to 91.5 points at one year, but reduced to 81.9 points at the last follow-up. Radiolucency was seen in 5 hips (12.8%) on the last follow-up radiograms. Femoral osteolysis occurred in 7 hips (17.9%) on the last follow-up radiograms. Four femoralstems (10.3%) were revised due to femoral osteolysis and loosening. The average duration between index operation and revision was 123 months. CONCLUSIONS: The HA-coated anatomical femoral stem gave an increased Harris hip score and lowered the incidence of thigh pain, however it did not prevent osteolysis due to polyethylene wear.