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Chronic Osteomyelitis: a Continuing Orthopaedic Challenge in Developing Countries

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Chronic Osteomyelitis: a Continuing Orthopaedic Challenge in Developing Countries International Orthopaedics (SICOT) (2001) 25:127–131 DOI 10.1007/s002640100239 ORIGINAL PAPER L.M. Museru · C.N. Mcharo Chronic osteomyelitis: a continuing orthopaedic challenge in developing countries Accepted: 16 January 2001 / Published online: 12 April 2001 © Springer-Verlag 2001 Abstract Nine patients with chronic osteomyelitis, three The improvement in both socio-economic status and with problems due to diagnosis, three with dilemmas re- health care delivery in developed countries has substan- garding treatment and three with other complications are tially decreased the prevalence of chronic osteomyelitis presented. It is suggested that although the diagnosis of in their communities. However, unfortunately, in devel- osteomyelitis in most cases is straightforward, presenta- oping countries the situation is different. The incidence tion might sometimes be similar to other conditions, of acute haematogenous osteomyelitis is not only high which can lead to a dilemma in the diagnosis. Because of but is either misdiagnosed or under-treated [5]. Apart the formidable complications, which may be difficult to from this, the increase in trauma, notably from road traf- manage and the difficulty in guaranteeing permanent cure, fic accidents has resulted in an increase in open fractures the best approach is prevention by judicious treatment of and their complications [4]. These factors have meant acute haematogenous osteomyelitis and of open fractures. that the prevalence of chronic osteomyelitis remains high; thus, posing a major orthopaedic challenge not on- Résumé Présentation de 9 malades atteints d’ostéomy- ly because of the high prevalence but also due to the dif- élite chronique: trois avec des problèmes diagnostiques, ficulty in achieving a definitive cure and preventing seri- trois avec des difficultés thérapeutiques et trois avec les ous complications. plusieurs autres complications. Il apparait que bien que The aim of this study was to illustrate some of the le diagnostic d’ostéomyélite soit dans la plupart des cas challenges in the diagnosis and management of chronic avancé facilement l’aspect peut parfois être trompeur, osteomyelitis, particularly for the timing of surgery and avec des hésitations diagnostiques. À cause des compli- possible options following bone loss due to destruction. cations redoutables qui peuvent être difficiles à traiter et la difficulté d’obtenir une guérison, il faut insister sur la prévention par le traitement correct de l’ostéomyélite Patients and methods aigue hématogène et des fractures ouvertes. Nine patients with chronic osteomyelitis are presented. Three of the patients had diagnostic problems; three with treatment dilem- Introduction mas and three with complications. The diagnosis of chronic osteomyelitis spells a chal- Diagnostic challenges lenge, not only for the patient but also for the attending surgeon, due to the fact that treatment may not be effec- Three young patients presented to us with a history of swelling of an extremity. There was no history of discharging sinuses. In one tive because of the high recurrence rates and also due to of the patients there was an associated fever. Based on the radio- potential complications. In the majority of patients diag- logical findings all had initially been diagnosed as having chronic nosis is usually straightforward; however, in some pa- osteomyelitis. One had undergone “saucerization and sequestrec- tients, different conditions may present with similar clin- tomy” with application of an external fixator. All had undergone biopsy, which showed that they were suffering from malignant ical features. This may pose a serious diagnostic problem tumors, osteosarcoma in two and round cell sarcoma (Ewing’s because some of these conditions may be malignant. Sarcoma) in one. L.M. Museru (✉) · C.N. Mcharo Muhimbili Orthopaedic Institute, P.O. Box 65496, Dar Es Salaam, Case reports Tanzania e-mail: [email protected] An 8-year-old girl was referred to us with a history of painful Fax: +255-811-333953 swelling of the right femur associated with fever. Based on radio- 128 Fig. 1a Case 1. Ewing sarco- ma of the femur. b. Osteomy- elitis of the femur Fig. 2 Case 2. Osteosarcoma of the humerus logical findings she had been diagnosed as having chronic osteo- myelitis and was being treated with antibiotic therapy. On exami- nation she appeared healthy and the X-ray showed radiolucent ar- eas in the middle of the shaft surrounded by an onion-peel appear- ance (Fig. 1a). Our working diagnosis was round-cell sarcoma (Ewing), which was confirmed following biopsy. A 14-year-old girl presented with a painful swelling of the right arm. Based on the physical findings on examination and X-ray she was initially diagnosed as having chronic osteomyelitis Fig. 3 Case 3. Osteosarcoma of the femur (Fig. 2). However, while undergoing antibiotic treatment, the pain became worse. Another X-ray was taken that showed a pathologi- cal fracture of the proximal one third of the humerus. She under- The third case was a 13-year-old boy, who presented with a went surgery during which a biopsy was taken. The histological painful swelling of the right distal femur. Based on the radio- results were of a high-grade osteosarcoma. On referral to our cen- graphs (Fig. 3) a diagnosis of chronic osteomyelitis was made ter the tumor had progressed rapidly and she developed metastasis and the patient was planned for saucerization and sequestrectomy. to the lungs and the right femur. At surgery no pus was found. A biopsy was taken and an external 129 Fig. 4 Case 4. Osteomyelitis of the femur Fig. 5 Case 5. Osteomyelitis of the femur with extensive destruction fixator applied because of a pathological fracture. The biopsy revealed an osteosarcoma, and when the patient was referred to us he had a fungating mass, which required palliative amputa- tion. Treatment challenges Two patients were referred with a painful swelling of the femur. Both were diagnosed as having panosteomyelitis of the femur. One adult was referred 2 months following a road traffic accident with a grade III open segmental fracture of the tibia. Treatment with external fixation and staged surgical debridement produced a good result. Case reports A 6-year-old boy was referred to us with a 3-month history of painful swelling of the right proximal femur. There were no dis- charging sinuses. Radiographs revealed extensive destruction with a pathological fracture (Fig. 4). Because the involucrum was very weak he was started on antibiotics and surgery deferred to a later date. Subsequent follow up showed progressive control of the in- fection and at 2 years showed complete healing without necessity to undergo surgery. Another 6-year-old boy was referred with a history of chronic discharging sinuses of the right femur and a protruding necrotic bone. Radiographs revealed extensive destruction of the femur with very poor involucrum (Fig. 5). Because of this problem staged surgery was planned, first the protruding necrotic bone be- ing nibbled off. Six months later the involucrum was strong Fig. 6 Case 6. Grade III open tibial fracture enough for a sequestrectomy. Subsequently, infection has been controlled and the involucrum has bridged the whole femur. A 30-year-old female sustained a grade III open segmental questionable. Despite this an external fixator was applied and fracture of the right tibia in a road traffic accident. She was she underwent serial debridement procedures to control infec- brought to us 2 months after the accident with severe discharging tion (Fig. 6). Subsequent X-rays showed union of the fractured sinuses. By then the viability of the middle fragment was site. 130 Fig. 9 Case 9. Osteomyelitis of the upper end of femur A 15-year-old refugee girl presented also with an extensive tib- Fig. 7 Case 7. Tibial bone loss treated with a Phemister graft ial loss of the right leg due to chronic osteomyelitis. Tibialisation of the fibula starting with the proximal end was done. Subsequent X-rays showed union of the graft site and hypertrophy of the fibu- la (Fig. 8). She now walks with an external splint. A 12-year-old female presented with panosteomyelitis of the right femur and a pathological dislocation of the hip (Fig. 9). At surgery the femoral head and neck were found to be necrotic and a resection arthroplasty was done. Though infection has been con- trolled she remains with a permanent disability. Discussion The diagnosis of chronic osteomyelitis is in most cases straightforward as the history and the radiological pic- ture is usually diagnostic. The danger is not to misdiag- nose or not detect chronic osteomyelitis but not to detect a more serious pathology. In the cases described the first patient with round cell sarcoma was misdiagnosed as having chronic osteomyelitis. Comparison with the ra- diographs of another patient with chronic osteomyelitis (Fig. 1b) show how closely they resemble each other. In the absence of discharging sinuses only biopsy may dis- tinguish the two. The other patient’s early radiological pictures (Figs. 2 and 3) also closely resemble chronic osteomyelitis. Although the mistakes described here may not be Fig. 8 Case 8. Tibial bone loss treated with tibialisation of the fibula common, they show that because of the high prevalence of chronic osteomyelitis in this region one tends to di- agnose it more readily. This is more liable to occur Complications when the attending clinician has only limited experi- ence and when a radiological picture may be the only Three patients with complications of chronic osteomyelitis had aid to diagnosis. In centres with several experienced or- also been referred to us. A 22-year-old young man presented with bone loss of the thopaedic surgeons, this may not occur easily. But in right tibia due to chronic osteomyelitis in childhood. He could not many of our hospitals the first attending clinician may bear weight on the affected limb.
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