RESUMO
Introduction: Humerus shaft fractures account for 3% of all adult fractures. Union rate after surgical management is around 84-97% with no difference between compression plating and intramedullary (IM) nailing. Non-union of humeral shaft fracture is not unusual complication of both conservative and operative treatment. IM nailing has been known to have several benefits from its relative stability with minimal soft-tissue dissection but with drawbacks such as less perfect reduction with higher risk of distraction, inability to take down interpositional tissue, risk of radial nerve injury and technical difficulty to pass guide wire and locking of nail. Many methods have been described for nonunion of humeral fracture with good results. However, treatment of a long-standing nonunion of the humerus with bone defect is challenging, as it may be complicated by broken implants. Very less research documented for long standing nonunion of humeral bone with diaphyseal bone defect. Case Report: We report a case report of middle-aged female who suffered a closed traumatic humeral shaft fracture which was managed with open reduction and fixation with IM nailing with some distraction and distal locking screw missing the nail making it an unstable construct traditionally called Wind shield, wiper effect was noticed in this patient and was the cause of nonunion in this case at some other institute 5 years back lending up in to nonunion with diaphyseal bone defect showing peri-implant expansile benign lesion treated at our institute with implant removal, excision of lytic lesion, and stabilized with extra articular distal humerus locking plate after strut fibular auto bone grafting . Conclusion: Humerus shaft non-union in a middle-aged patient is heterogeneous entity and has to be managed after ruling out neoplastic (metastasis) as well as infective etiology, and locking plate is the gold standard for its management along with strut grafting being osteoporotic bone with some bony defect.
RESUMO
BACKGROUND: Total joint arthroplasties of the hip and knee represent a remarkable feat of modern medicine in terms of reducing pain and restoring function to millions of patients afflicted with severe arthritis. Oftentimes, the performance and longevity of new implants and devices are based on limited data. This is the first study by a non-designer on the press fit condylar rotating platform posterior stabilized (PFC-RP-PS) design with 100' success. This has a relevance, vis-á -vis bias that one may have in terms of reproducibility of technique and funding from the manufacturer. We associate our excellent mid-term results to intra operative technical aspects and stringent intra operative exclusion criteria. MATERIALS AND METHODS: Our study includes a cohort of 121 selected knees operated between January 2003 and October 2010. We used cemented, posterior stabilized (PS), mobile bearing (MB), and RP prosthesis from the same manufacturer in all these 121 knees. The patients were evaluated bi-annually with the calculation of their Knee Society Scores (KSS) and a radiological assessment for loosening/osteolysis. RESULTS: 120 knees were available for followup. The average Knee Society clinical and functional scores, respectively, were 27 points and 40 points preoperatively and 93 points and 95 points postoperatively. This indicates a mean increase of about 71' in the clinical score and about 58' in the functional score, which is statistically significant. The mean postoperative flexion was 124°, a mean increase of 23° from the preoperative flexion of 101°. There were no revisions (Kaplan--Meier survivorship of 100'). CONCLUSIONS: We feel durable and reproducible results of PFC-RP-PS design knees are very technique sensitive. The way ahead with the PFC-RP-PS knees looks promising when the exclusion criteria for this design are strictly met. Coming from a non-designer, this study acquires a higher degree of relevance without any designer's or manufacturer's bias.