Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study
Abstract Background Short-stem Hip Arthroplasty (SHA) are increasingly implanted in recent years thanks to their potential advantage in preserving metaphyseal bone-stock. Among them, the NANOS® short-stem implant demonstrated satisfactory results to short and mid-term. The purpose of this retrospect...
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| Format: | Article |
| Language: | English |
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BMC
2022-01-01
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| Series: | BMC Musculoskeletal Disorders |
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| Online Access: | https://doi.org/10.1186/s12891-021-04953-8 |
| _version_ | 1797653580697567232 |
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| author | Vincenzo De Santis Nadia Bonfiglio Mattia Basilico Greta Tanzi Germani Maria Rosaria Matrangolo Angelo Carosini Giuseppe Malerba Giulio Maccauro |
| author_facet | Vincenzo De Santis Nadia Bonfiglio Mattia Basilico Greta Tanzi Germani Maria Rosaria Matrangolo Angelo Carosini Giuseppe Malerba Giulio Maccauro |
| author_sort | Vincenzo De Santis |
| collection | DOAJ |
| description | Abstract Background Short-stem Hip Arthroplasty (SHA) are increasingly implanted in recent years thanks to their potential advantage in preserving metaphyseal bone-stock. Among them, the NANOS® short-stem implant demonstrated satisfactory results to short and mid-term. The purpose of this retrospective study was to evaluate the clinical and radiographic outcome of the Nanos® short stem at a minimum follow-up of 10 years. Methods Sixty-seven patients aged 53 ± 20 years were enlisted in the study, for a total of 72 hips. Primary outcomes were survivorship of the implant and clinical outcome measured using the Hip disability and Osteoarthritis Outcome scores (HOOS) and the Short Form Survey (SF12) questionnaire. The secondary outcome was a radiological evaluation calculating the inclination and the anteversion angle of the acetabular cup for each implant and investigating osteolysis, heterotopic ossifications and stem position. Results We observed a 95.5% stem survivorship. The complication rate was 7.6% and three implants underwent revision because of an aseptic loosening, an infection and a periprosthetic fracture due to trauma. Among 58 patients (63 hips) evaluated in an outpatient visit 10–16 years after surgery, improvement in clinically relevant scores comparing with baseline was observed: HOOS score increased after surgery in all its subcategories (from 32.25 ± 14.07% up to 91.91 ± 9.13%) as well as SF12 which increased by more than 18 percentage points. On clinical assessment, the range of motion (ROM) was restored at follow-up, 1 patient (1.7%) showed a squeaking hip and 2 (3.4%) reported leg-length discrepancy. Neutral stem positioning was achieved in 58 hips and heterotopic ossifications occurred in 10 hips (16%). Conclusions The current study reports good clinical and radiological outcomes following NANOS® short-stem hip implant at minimum 10 years-follow-up. Since the high rate of stem survivorship, the low complication rate demonstrated and the overall patient satisfaction, our results suggest NANOS® neck-preserving prostheses should be considered as a valid alternative to standard implants. |
| first_indexed | 2024-03-11T16:46:39Z |
| format | Article |
| id | doaj.art-cd7cb46f876a48dc8e5793c8397d7515 |
| institution | Directory Open Access Journal |
| issn | 1471-2474 |
| language | English |
| last_indexed | 2024-03-11T16:46:39Z |
| publishDate | 2022-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Musculoskeletal Disorders |
| spelling | doaj.art-cd7cb46f876a48dc8e5793c8397d75152023-10-22T11:03:45ZengBMCBMC Musculoskeletal Disorders1471-24742022-01-0122S21810.1186/s12891-021-04953-8Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up studyVincenzo De Santis0Nadia Bonfiglio1Mattia Basilico2Greta Tanzi Germani3Maria Rosaria Matrangolo4Angelo Carosini5Giuseppe Malerba6Giulio Maccauro7Department of Orthopaedics, Mater Olbia HospitalUniversità Cattolica del Sacro CuoreUniversità Cattolica del Sacro CuoreUniversità Cattolica del Sacro CuoreUniversità Cattolica del Sacro CuoreUniversità Cattolica del Sacro CuoreDepartment of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCSS, Università Cattolica del Sacro CuoreUniversità Cattolica del Sacro CuoreAbstract Background Short-stem Hip Arthroplasty (SHA) are increasingly implanted in recent years thanks to their potential advantage in preserving metaphyseal bone-stock. Among them, the NANOS® short-stem implant demonstrated satisfactory results to short and mid-term. The purpose of this retrospective study was to evaluate the clinical and radiographic outcome of the Nanos® short stem at a minimum follow-up of 10 years. Methods Sixty-seven patients aged 53 ± 20 years were enlisted in the study, for a total of 72 hips. Primary outcomes were survivorship of the implant and clinical outcome measured using the Hip disability and Osteoarthritis Outcome scores (HOOS) and the Short Form Survey (SF12) questionnaire. The secondary outcome was a radiological evaluation calculating the inclination and the anteversion angle of the acetabular cup for each implant and investigating osteolysis, heterotopic ossifications and stem position. Results We observed a 95.5% stem survivorship. The complication rate was 7.6% and three implants underwent revision because of an aseptic loosening, an infection and a periprosthetic fracture due to trauma. Among 58 patients (63 hips) evaluated in an outpatient visit 10–16 years after surgery, improvement in clinically relevant scores comparing with baseline was observed: HOOS score increased after surgery in all its subcategories (from 32.25 ± 14.07% up to 91.91 ± 9.13%) as well as SF12 which increased by more than 18 percentage points. On clinical assessment, the range of motion (ROM) was restored at follow-up, 1 patient (1.7%) showed a squeaking hip and 2 (3.4%) reported leg-length discrepancy. Neutral stem positioning was achieved in 58 hips and heterotopic ossifications occurred in 10 hips (16%). Conclusions The current study reports good clinical and radiological outcomes following NANOS® short-stem hip implant at minimum 10 years-follow-up. Since the high rate of stem survivorship, the low complication rate demonstrated and the overall patient satisfaction, our results suggest NANOS® neck-preserving prostheses should be considered as a valid alternative to standard implants.https://doi.org/10.1186/s12891-021-04953-8Total hip arthroplastyShort stem hip arthroplastySurvivorshipOutcome |
| spellingShingle | Vincenzo De Santis Nadia Bonfiglio Mattia Basilico Greta Tanzi Germani Maria Rosaria Matrangolo Angelo Carosini Giuseppe Malerba Giulio Maccauro Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study BMC Musculoskeletal Disorders Total hip arthroplasty Short stem hip arthroplasty Survivorship Outcome |
| title | Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study |
| title_full | Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study |
| title_fullStr | Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study |
| title_full_unstemmed | Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study |
| title_short | Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up study |
| title_sort | clinical and radiographic outcomes after total hip arthroplasty with the nanos neck preserving hip stem a 10 to 16 year follow up study |
| topic | Total hip arthroplasty Short stem hip arthroplasty Survivorship Outcome |
| url | https://doi.org/10.1186/s12891-021-04953-8 |
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