. A radiographic atlas of the pathologic changes of bones and joints . PLATE LXXI. — 192 — PLATE LXXIT. REDUCED COXCESITAL DISU)CAT10X OF THE RIGHT HIP. The acetabular cavity on the right side is not as deep as on the normalside. Just below the acetabulum is a depression, which represents the situationof the abnormal position of the head before PLATE LXXII. — 195 — FOREIGN BODIES. We are onl_v concerned in this chapter with the location ofForeign Bodies in or near the bones and joints of the , we believe, can be done in every instance from skiagramstalten in the usu


. A radiographic atlas of the pathologic changes of bones and joints . PLATE LXXI. — 192 — PLATE LXXIT. REDUCED COXCESITAL DISU)CAT10X OF THE RIGHT HIP. The acetabular cavity on the right side is not as deep as on the normalside. Just below the acetabulum is a depression, which represents the situationof the abnormal position of the head before PLATE LXXII. — 195 — FOREIGN BODIES. We are onl_v concerned in this chapter with the location ofForeign Bodies in or near the bones and joints of the , we believe, can be done in every instance from skiagramstalten in the usual manner, without the use of any special instru-ment, by remembering and applying the two following rules: First. Whenever a foreign body is imbedded in the bone it isalways surrounded by a light zone, first described by the The closer the foreign body lies to the X-rav platethe smaller, the darker, and the sharper will its shadow be. When the foreign body is imbedded in the bone, a good skia-graph shows a zone completely surrounding it. This zone is ofa lighter shade than that of the bone in which the foreign bodyis imbedded. Such is not the case if the foreign body is not im-bedded in the bone, even though the latter and the foreign bodvboth he in the path of the X-rays and show in the negative insuch a manner that from one si


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