Prof. Hassan Saidi

Prof. Saidi Hassan holds a BSc (Honors) in Human Anatomy, MBChB, MMed (Surgery) and PhD (Surgery) degrees from the University of Nairobi and has received additional training in digestive and laparoscopic surgery from Germany and USA. He is a board certified attending in General and Laparoscopic surgery at Kenyatta National and Aga Khan University Hospitals. Saidi is a Professor and current head, Department of Human Anatomy where he has taught for over two decades.

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Mwachaka, PM, Saidi H, Odula PO, Mandela PI.  2015.  Effect of monocular deprivation on rabbit neural retinal cell densities. J Ophthalmic Vis Res. 10(2):144-150.
Abdalla, RO, Qureshi MM, Saidi H, Abdallah A.  2015.  Introduction of the Canadian CT Head Rule Reduces CT Scan Use in Minor Head Injury. Ann. Afr. Surg.. 12(1):19-21.
MS Machoki, MS, Saidi H, Raja H, Ndonga A, Njue A, Biomdo I, Kimani S, Arudo J, Mushtaq A.  2015.  Risk Factors for Esophageal Squamous Cell Carcinoma in a Kenyan Population. Ann. Afr. Surg.. 12(1):38-43.
Nyagetuba, MJK, Saidi H, Githaiga J.  2015.  The association between pitch conditions and incidence of injury in rugby. Ann. Afr. Surg.. 12(2):73-76.
Tharao, MK, Oroko P, Abdulkarim A, Saidi H.  2015.  Validation of the Ottawa ankle rules at a tertiary teaching hospital. Ann. Afr. Surg.. 12(2):77-80.


Saidi H, Gichangi P, MAPK.  2014.  Histology Module I: Basic Histology. , Nairobi: Department of Human Anatomy, UON
H, S.  2014.  Respiratory System. KIMANI’S HISTOLOGY Text and Manual. , Nairobi: Department of Human Anatomy, UON
Saidi, H, OP.  2014.  Glandular Digestive System. KIMANI’S HISTOLOGY Text and Manual . , Nairobi: Department of Human Anatomy, UON
Wabwire, B, Saidi H.  2014.  Stratified Outcome Evaluation of Peritonitis. Afr Surg . 11:29-34.
Nderitu J, Butt F, SH.  2014.  Variations in the emergence and course of the inferior palpebral nerve. Craniomaxillofac Trauma Reconstr . 7(3):233-6.
El-Busaidy H, Hassanali J, KHO’o N’uWSJ &.  2014.  Prevalence of abnormal Sternal Angles in a Kenyan Population. Anat Physiol . 4:135.
Olabu B, Gichangi P, SO’oHJ.  2014.  Castration causes progressive reduction of penile length of rabbit penis. Anat J Afr . 3 (3):3(3):412-416.
Ongeti K, Saidi H, O’oJ.  2014.  Common carotid intimal medial thickness in a Kenyan . Anat J Afr . 3 (3 ):393-399.
Mwachaka P, Saidi H, OMPP.  2014.  . Structural changes in the rabbit neural retina following monocular deprivation. Ann of Anatomy . 196S: :177-178.
Misiani MK, Loyal PK, O’o JASHS.  2014.  High origin of the right testicular artery coursing through a hiatus in the inferior vena cava. Anat J Afr. 3 (3):372-375.
Saidi, H, ONGETI K, Mandela P, Mwachaka P, Olabu B.  2014.  Kiman's Histology Text and Manual. , Nairobi: Department of Human Anatomy, UON
Saidi, H, B.K. Mutiso, Ogengo. J.  2014.  Mortality after road traffic crashes in a system with limited trauma data capability., 2014. Journal of trauma management & outcomes. 8(1):4. Abstract

Africa has 4% of the global vehicles but accounts for about one tenth of global vehicular deaths. Major trauma in Kenya is associated with excess mortality in comparison with series from trauma centers. The determinants of this mortality have not been completely explored.


Saidi H, Njuguna E, MSWAOAHIA.  2013.  Gastrointestinal Stromal Tumor (GIST). National Guidelines for Cancer Management Kenya . , Nairobi: Ministry of Heath, Kenya
Saidi H, Njuguna E, MSWAO-ANAOAHIA.  2013.  Rectal Cancer. National Guidelines for Cancer Management Kenya . , Nairobi: Ministry of Heath, Kenya
Saidi H, Njuguna E, MSWAO-ANAOAHIA.  2013.  Colon Cancer. National Guidelines for Cancer Management Kenya . , Nairobi: Ministry of Heath, Kenya
Nebayosi T, Saidi H, MNBAEN.  2013.  Pancreatic Cancer. National Guidelines for Cancer Management Kenya. , Nairobi: Ministry of Heath, Kenya
96. Musibi A, Saidi H, NWAO-ANAOEIA.  2013.  Hepatocellular Carcinoma. National Guidelines for Cancer Management Kenya. , Nairobi: Ministry of Health, Kenya
Njuguna E, Musibi A, SWAHIA.  2013.  Gastric Cancer. National Guidelines for Cancer Management Kenya,. , Nairobi: Ministry of Health, Kenya
H.Saidi, Mutisto BK.  2013.  Motorcycle injuries at a tertiary referral hospital in Kenya: injury patterns and outcome. Eur J Trauma Emerg Surg 39:481–485. 38:481-485.
Stevens, KA, Paruk F, Bachani AM, Wesson HHK, Wekesa JM, Mburu J, Mwangi JM, Saidi H, Hyder AA.  2013.  Establishing hospital-based trauma registry systems: lessons from Kenya., 2013 Dec. Injury. 44 Suppl 4:S70-4. Abstract

In the developing world, data about the burden of injury, injury outcomes, and complications of care are limited. Hospital-based trauma registries are a data source that can help define this burden. Under the trauma care component of the Bloomberg Global Road Safety Partnership, trauma registries have been implemented at three sites in Kenya. We describe the challenges and lessons learned from this effort.

Saidi, H;, Mutiso B.  2013.  Injury Outcomes in Elderly Patients Admitted at an Urban African Hospital. Abstract

Background: Elderly patients have worse outcomes for similar severity when compared to younger trauma patients. Elderly patients form smaller proportions of the trauma population in the developing world in comparison to high in-come countries. Due to limited data capabilities, elderly trauma has been infrequently studied. Objective: To describe the common injuries that afflict elderly trauma patients associated resource utilization and the determinants of outcome in Kenyan urban hospital. Methods: Seventy two patients aged 60 years and older admitted for trauma from diverse mechanisms, were recruited over a period of one year (November 2009-December 2010). Data on the specific mecha-nism and type of injury, age, sex, intensive care unit (ICU) use, hospital length of stay, and cost were recorded. Survi-vors and those who died during admission were compared to determine associated factors. Elderly patients were also compared to younger trauma patients to determine significant group peculiarities using X2 analysis or Fisher’s exact test as appropriate. Results: Elderly trauma cases (mean age 70.5 + 9.1 years) formed 4.5% of all trauma admissions during the study period. The intent was accidental in 84.7% of cases. The predominant mechanisms of injury were traf-fic (44.4%) and falls (41.7%). Females comprised 41.7% of all patients and lower limb fractures predominated (54.9%). The average injury severity score was 7.82 + 4.4. (median 9.0). The proportion admitted to the ICU was 6%. The me-dian length of hospital stay was 24 days, cost of treatment Kshs. 27,153 Kenya shillings and overall hospital mortality rate was 13.9% (25% for ISS > 15). Only gender and head injury were predictors of mortality. Conclusions: Traffic and falls are the predominant mechanisms in geriatric trauma in Kenya. Unique features of geriatric trauma are higher fe-male involvement, prolonged length of hospital stay and fewer predictors of mortality compared to younger patients.

Saidi, H, Mutiso B.  2013.  Trauma deaths outside the hospital: Uncovering the typology in the Kenyan Capital. J Forensic Leg Med.. 20 (6):570-4.
El-busaidy, H, Saidi H, Odula P, Ogeng'o J, Hassanali J.  2013.  Age Changes in the structure of human atrioventricular annuli. Anatomy Journal of Africa. 1(1):30-38.
Magoma, G, Saidi H, Kaisha W.  2013.  The pattern of external laryngeal nerve relation to the superior thyroid artery in a Kenyan population. Anatomy Journal of Africa . 1(1):27-29.
ONGETI, K, Ogeng’o J, Saidi H.  2013.  Structural organization of the human carotid artery.. Anatomy Journal of Africa. 2(1)
Makanga, W, Wasike R, Saidi H.  2013.  A profile of female breast cancer patients in a Kenyan private hospital.. Annals of African Surgery . 10(1):3-7.
Saidi, H, Mutiso B.  2013.  High Burden, Morbidity and Cost of Motorcycle Injuries at a Tertiary Referral Hospital in Kenya. European Journal of Trauma and Emergency Surgery. DOI 10.1007/s00068-013-0280-
Sinkeet, S, Mwachaka P, Muthoka J, Saidi H.  2013.  Branching pattern of inferior mesenteric artery in a black African population: a dissection study.. SRN Anatomy.


El-Busaid, H, Kaisha W, Hassanali J, Hassan S, Ogeng'o J, Mandela P.  2012.  Sternal foramina and variant xiphoid morphology in a Kenyan population., 2012 Feb. Folia morphologica. 71(1):19-22. Abstract

Sternal foramina may pose a great hazard during sternal puncture, due to inadvertent cardiac or great vessel injury. They can also be misinterpreted as osteolytic lesions in cross-sectional imaging of the sternum. On the other hand, variant xiphoid morphology such as bifid, duplicated, or trifurcated may be mistaken for fractures during imaging. The distribution of these anomalies differs between populations, but data from Africans is scarcely reported. This study therefore aimed to investigate the distribution and frequency of sternal foramina and variant xiphoid morphology in a Kenyan population. Eighty formalin-fixed adult sterna (42 males [M], 38 females [F]) of age range 18-45 years were studied during dissection at the Department of Human Anatomy, University of Nairobi. Soft tissues were removed from the macerated sterna by blunt dissection and foramina recorded in the manubrium, body, and xiphoid process. The xiphisternal ending was classified as single, bifurcated (2 xiphoid processes with a common stem), or duplicated (2 xiphoid processes with separate stems). Results were analysed using SPSS version 17.0. Foramina were present in 11 specimens (13.8%): 7 M, 4 F. The highest frequency was in the sternal body (n = 9), where they predominantly occurred at the 5th intercostal segment. Xiphoid foramina were present in 2 specimens (both males) (2.5%), while manubrial foramen was not encountered. The xiphisternum ended as a single process in 64 cases (34 M, 30 F) (80%). It bifurcated in 10 cases (5 M, 5 F) (12.5%), and duplicated in 6 cases (4 M, 2 F) (7.5%). There were no cases of trifurcation. Sternal foramina in Kenyans vary in distribution and show higher frequency than in other populations. These variations may complicate sternal puncture, and due caution is recommended. The variant xiphisternal morphology may raise alarm for xiphoid fractures and may therefore be considered a differential.

Magoma, G, Saidi H, Kaisha W.  2012.  Relation of the external laryngeal nerve to superior thyroid artery in an african population. Abstract

The external laryngeal nerve runs parallel to superior thyroid artery and later crossing the artery either above or below the upper pole of the thyroid gland. This relatively high anatomic variability demonstrates inter-population differences. However, datum among the Kenyan population is lacking. Knowledge of normal and variant anatomy of these structures is important in surgical procedures within the neck. This study therefore aimed at describing the variant anatomical relations of the superior thyroid artery and external laryngeal nerve for the Kenyan population. Twenty formalin fixed cadavers obtained from the Department of Human Anatomy, University of Nairobi were dissected to expose the thyroid gland, superior thyroid artery and external laryngeal nerve. The relation of the superior thyroid artery to the external laryngeal nerve was noted. The external laryngeal nerve crossed the superior thyroid artery within 1cm above the upper pole of the thyroid gland in 25% of cases and more than 1 cm in 75% of cases. The level at which the external laryngeal nerve crosses the superior thyroid artery displays variations among Kenyans warranting care during surgical procedures of the thyroid gland.

El-Busaid, H, Hassan S, Odula P, Ogeng'o J, Ndung'u B.  2012.  Sex variations in the structure of human atrioventricular annuli. Abstract

Atrioventricular annuli are important in haemodynamic flexibility, competence, and support for tricuspid and mitral valves. The anatomical features of the annuli, such as circumference, organisation of connective tissue fibres, myocardium, and cellularity, may predispose to annular insufficiency and valvular incompetence. These pathologies occur more commonly in females, although the anatomical basis for this disparity is unclear. Sex variation in the structure of the annuli is important in providing a morphological basis for the patterns of these diseases. This study therefore aimed to determine the sex variations in the structure of human atrioventricular annuli. One hundred and one hearts (48 males, 53 females) obtained from the Department of Human Anatomy of the University of Nairobi were studied. Annular circumferences were measured using a flexible ruler and corrected for heart weight. Results were analysed using SPSS version 17.0 and sex differences determined using student's t-test. A p-value of less than 0.05 was considered significant. For light microscopy, specimens were harvested within 48 hours post-mortem, processed, sectioned, and stained with Masson's trichrome and Weigert's elastic stain with van Gieson counterstaining. Females had significantly larger annular circumferences than males after correcting for heart weight (p ≤ 0.05). Histologically, myocardium was consistently present in all male annuli while this was absent in females except in one specimen. The annuli were more elastic and cellular in males especially in the annulo-myocardial and annulo-valvular zones, respectively. The corrected larger annular circumference in females may limit heart valve coaptation during cardiac cycle and may be a risk factor for valvular insufficiency. The predominance of myocardium, annular cellularity, and elasticity may be more protective against heart valve incompetence in males than in females

Ongeti, KW, Ogeng’o J, Gakuu LN, Saidi H.  2012.  A Pulei Prolapsed Intervertebral Disc in an African Population: Kenyan Experience. East Afrcan Orthopedic Journal. 6:12-15.
El-Busaid, H, Kaisha W, Hassanali J, Hassan S, Ogeng'o J, Mandela P.  2012.  Sternal foramina and variant xiphoid morphology in a Kenyan population.. Folia Morphol (Warsz). 71(1):19-22.
Magoma, G, Saidi H, Kaisha WO.  2012.  Origin of thyroid arteries in a Kenyan population. Annals of African Surgery. 9(1):50-54.

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