Comparison of collum femoris-preserving stems and ribbed stems in primary total hip arthroplasty

Abstract

BackgroundThis retrospective study investigated the relative benefits of using a collum femoris-preserving prosthesis or ribbed stem during total hip arthroplasty (THA).MethodsThe clinical results were compared of patients who underwent THA, between January 2010 and December 2012, with either a CFP prosthesis or a ribbed stem (66 and 75 patients, respectively, aged 43.4 ± 10.8 and 42.3 ± 9.8 years). Patients were assessed using the Harris Hip Score (HHS), Western Ontario and McMaster University Osteoarthritis Index (WOMAC), 12-Item Short Form Health Survey (SF-12), and physical component summary (PCS) score. Intraoperative and postoperative complications and leg-length differences were noted.ResultsThe mean follow-up times of the CFP and ribbed groups were 67.2 ± 7.5 and 68.3 ± 7.2 months, respectively. The HHS, SF-12 MCS, SF-12 PCS, and WOMAC scores of the two groups were similar. The rates of periprosthetic femoral fractures and leg-length differences > 10 mm in the CFP group (10.6% and 13.6%, respectively) were significantly higher than those in the ribbed group (1.3% and 2.7%). The groups were similar regarding complications of osteolysis, ectopic ossification, dislocation, deep infection, deep venous thrombosis, thigh pain, and aseptic loosening. The survival rates of the CFP and ribbed groups were comparable (98.5% and 97.8%).ConclusionThe clinical results of the CFP and ribbed prostheses in young patients given THA were similar for Chinese patients. However, the CFP stem should be used with caution, given the high incidence of technical problems associated with implantation especially for Chinese patients.

Comparison of Clinical Outcomes, Radiological Outcomes and Bone Remodeling Outcomes Between Proximal Coated Single-Wedge New Stem and Full Coated Dual-Wedge Classic Stem in 1-Stage Bilateral Total Hip Arthroplasty

“…It is widely believed that difference of more than 15 mm can lead to gait disorders, lower back pain, and general dissatisfaction [40]. However, some studies reported that differences in leg length was not associated with the feelings of patients [41]. Compared with before the operation in the current study, the length of the lower limbs increased in both groups, due to the replacement of the collapsed femoral head by the prosthetic femoral head.…”

Relationships between the femoral neck-preserving ratio and radiologic and clinical outcomes in patients undergoing total-hip arthroplasty with a collum femoris-preserving stem

“…In this case, the distal-lateral part of the stem is tightly flattened on the lateral femur, and an aggressive compression force might cause PFF. [23,24] Thus, our suggestion is that surgeons should pay additional attention during the operation to sufficiently preserve the femoral neck length and evaluate the patients’ femoral neck-preserving ratio preoperatively to help reduce the possibility of PFF (Fig. 3).…”

Greater increase in femoral offset with use of collum femoris-preserving stem than Tri-Lock stem in primary total hip arthroplasty

“…8 However, another study comparing the CFP stem with the ribbed stem demonstrated that the CFP stem was more likely to cause an increase in the leg length and the occurrence of periprosthetic fractures. 9 Klein et al 10 showed that both the CFP stem and the Corail stem (DePuy Orthopaedics, Warsaw, IN, USA) had similar hip function scores, but they did not evaluate the FO or leg length. Thus, whether femoral neck-preserving hip prostheses perform better than traditional neck implants that require resection remains unclear.…”