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THE TREATMENT OF NEOPLASTIC LONG BONE LESIONS WITH LOCKING PLATE FIXATION.



Abstract

Endoprosthetic replacement is often the preferred treatment for neoplastic lesions as internal fixation has been shown to have a high failure rate. Due to anatomical location, disease factors and patient factors internal fixation may be the treatment of choice. No reports exist in the literature regarding the use of locking plates in the management of neoplastic long bone lesions.

Data was collected prospectively on the first 10 patients who underwent locking plate fixation of neoplastic long bone lesions. Data was collected on the nature of the lesion, surgery performed, complications and outcome.

The patients mean age was 56.6 (15–88). Six lesions were metastatic, one haematological (myeloma) and 3 were primary bone lesions (lymphoma, Giant cell tumour, simple bone cyst). In nine cases a fracture through the lesion had occurred. Anatomical locations of the lesions were; proximal humerus (four), proximal tibia (three), distal femur (two) and distal tibia (one). Cement augmentation of significant bone defects was necessary in seven cases.

The mean hospital stay was 8 days (3–20). There were no inpatient complications. Five patients received adjuvant radiotherapy and one patient received neo-adjuvant radiotherapy to the lesion. There have been 3 deaths. All were due to metastatic disease and occurred between 6 and 12 months after surgery. The mean follow up in the surviving patients is currently 9 months (5–16). There have been no fixation related complications. Patients who had suffered a fracture had restoration of their WHO performance status. At last follow up the mean MSTS was 78% (57–90) for lower limb surgery and 70% (63–76) for upper limb surgery. These figures compare favourably with the results of endoprosthetic replacement.

The early results of locking plate fixation for neoplastic long bone lesions are excellent. Follow up continues to observe how these devices perform in the long term.

Correspondence should be addressed to BOOS c/o British Orthopaedic Association, 35-43 Lincoln’s Inn Fields, London WC2A 3PE, England