Data on the pattern of morphological variations and the morphometric parameters of the sacral hiatus in an African population are not available. The aim of this study therefore was to determine the prevalence of morphological variations and establish the morphometric parameters of the sacral hiatus in a Kenyan population. Materials and Methods Eighty eight (88) dry adult human sacra were obtained by systematic random sampling of every 2nd sacrum from the bone collection of the Osteology department of the National Museums of Kenya, Nairobi. Age was determined by fusion of the sacral epiphyses. Forty (40) sacra were from male subjects, 22 from female and 22 were of indeterminate gender. Measurements were made twice by the first author and the average of the two measures recorded. Inter-observer variability was assessed at the onset of the data collection by scoring observations and measurements of fifteen random sacra by two observers. The dorsal view of the caudal sacral region was classified morphologically according to Nagar et al. (5). The lower limit of the second sacral vertebral body was determined

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Objective: To describe the pattern and prevalence of variations that occur in the supraclavicular part of the brachial plexus in a Kenyan population. Study deSign:Descriptive cross-sectional study. MaterialS and MethOdS:Ninety-four brachial plexuses from forty-seven formalin fixed cadavers were displayed by gross dissection. reSultS:The presence of at least one variation from the classical anatomy was observed in 73 (77.7%) of the 94 plexuses. The roots and trunks were involved in 32 (34%) of the plexuses . Preand postfixed roots were present in 23 (24.7%) and 3 (3.2%), respectively. The presence of four trunks, and trunks passing between the scalene medius and posterior were also noted. The long thoracic nerve was variant in 51 (54.3%) of the plexuses. Unusual relations of the phrenic nerve to scalene muscles and the subclavian vein were encountered. cOncluSiOn:The presence of four trunks and an accessory phrenic nerve passing through the subclavian vein are probably described and reported for the first time. However, most of the variations of the BP among Kenyans are similar to those reported in the other populations.