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INTRODUCTIONThe well-known causes of Dorsal myelopathy are Koch's Spine and Metastasis. Ossified Yellow Ligament is a rare cause, endemic in some parts of the world. With advances in imaging techniques, preoperative evaluation and diagnosis has become easier. MATERIALS AND METHODSTwenty-one cases of Dorsal ligamentum flavum thickening causing compressive myelopathy have been studied and evaluated with Nurick grading preoperative and post-operatively. The age distribution, presenting complaints, duration of symptoms, preoperative Nurick grade, level of spinal involvement, surgical procedures and post-operative Nurick grade were compared among male and female patients and also among different age groups RESULTS AND CONCLUSIONMales are twice commonly affected than females. Parasthesias are present in all most all cases. Lower dorsal segment is solely involved in females whereas multiple level involvement is common among male patients. Male patients usually develop sudden onset of symptoms with trivial fall.

Chondrosarcomas of temporal bone is a rare malignant neoplasm constituting only 0. 16% of all intracranial tumors. Cranial nerve involvement in chondrosarcoma of temporal bone is related to specific anatomic location of the tumor. Isolated facial palsy should be evaluated thoroughly and should be differentiated from Bell's palsy. We present a case of isolated facial palsy due to mastoid bone chondrosarcoma in a 25 year old man which was misdiagnosed as Bell's palsy and treated for the same previously. The clinical features, management and outcome are discussed with reviewing the related literature.