Age, activity, and native femoral offset are associated with articular noise in ceramic on ceramic total hip arthroplasty (THA) with custom stems.

PURPOSE: To report the prevalence of articular noise following total hip arthroplasty (THA) with custom stems and ceramic-on-ceramic (CoC) bearings, to determine the risk factors for articular noise, and the effect of articular noise on quality of life (QoL). METHODS: A consecutive series of uncemented primary THAs using custom stems implanted between 01/02/ 2014-01/04/2017 were evaluated. The cohort comprised 479 patients (529 hips, 301 males and 228 females), aged 55.9 ± 11.6 with a BMI of 25.8 ± 4.3 kg/m2. Postoperative assessment included Oxford hip score (OHS), forgotten joint score (FJS), and a dedicated questionnaire on articular noise. Descriptive statistics were used to summarise the data. Regression analyses were performed to study factors associated with presence of noise. RESULTS: At a minimum follow-up of five years, 431 patients (476 hips) were available for postoperative assessment. OHS was 45.3 ± 6.1, FJS was 83.6 ± 24.7, and 69 patients (71 hips, 15%) reported articular noise. The impact of noise on QoL was 1.4 ± 2.1. Multivariable analyses confirmed that the presence of articular noise was associated with younger age (OR,0.95; 95%CI,0.93-0.97; p < 0.001), smaller native femoral offset (OR, 0.95; 95%CI,0.90-1.00;p = 0.034), as well as intense (OR, 3.15; 95%CI, 1.15-9.79; p = 0.033) and very intense physical activity (OR, 4.71; 95%CI, 1.52-16.15; p = 0.009). CONCLUSION: The prevalence of articular noise following primary THA with custom stems and CoC bearings was 15%, but the impact of noise on QoL was minimal for most patients. Younger, highly active patients should be advised of an increased likelihood of noise from CoC THA, particularly if they have low native femoral offset on preoperative imaging.

Excellent Clinical Outcomes and Return to Dance of 6 Active, Professional Ballet Dancers Aged Younger Than 40 Years at Total Hip Arthroplasty Through Direct Anterior Approach With a Custom Stem: A Case Report.

OBJECTIVE: To report clinical outcomes and return to dance after total hip arthroplasty (THA) by direct anterior approach (DAA) using custom stems in young, active, professional ballet dancers. DESIGN: Case report. SETTING: Tertiary. PATIENTS: Six active, professional ballet dancers younger than 40 years who intended to resume ballet after THA. INTERVENTIONS: Primary THA by muscle-sparing DAA using custom stems. MAIN OUTCOME MEASURES: Return to dance, Oxford hip score (OHS), forgotten joint score (FJS), and satisfaction with surgery and pain using numeric rating scale (NRS). CTs were acquired 2 days after surgery to assess implant position. Descriptive statistics were used. RESULTS: The cohort comprised 4 women and 2 men aged 15 to 39 years. At 2.5 to 5.1 years of follow-up, all patients returned to professional ballet dance. Time to return to dance was 3 to 4 months for 3 patients and 12 to 14 months for 3 patients. Clinical scores were excellent, except for FJS in 1 patient who had considerable pain at her spine and ipsilateral foot. All patients were satisfied with surgery (NRS = 10). There were no complications, reoperations, or revisions. CTs confirmed that stems and cups were correctly positioned. CONCLUSIONS: All 6 young, active, professional ballet dancers who underwent THA by muscle-sparing DAA using custom stems returned to professional ballet dance and were completely satisfied with surgery. At >2 years of follow-up, 5 patients had excellent clinical outcomes and reported their dancing level to be as expected or better, whereas 1 patient had a lower FJS and was unable to return to her expected dance level.

High Rates of Satisfaction and Return to Dance in Current or Former Professional Ballet Dancers After Total Hip Arthroplasty With a Muscle-Sparing Direct Anterior Approach Using Custom Femoral Stems.

Background: Professional ballet dancers have high expectations after total hip arthroplasty (THA), particularly if they intend to resume dancing as performers or teachers. Purpose: To report clinical outcomes and return to dance after THA with a muscle-sparing direct anterior approach using a custom femoral stem in a cohort of current or former professional ballet dancers. Study Design: Case series; Level of evidence, 4. Methods: Twenty-three patients (26 hips) were included, that identified as current or former professional ballet dancers, from a consecutive series of 1699 hips that underwent primary THA by 1 of 2 surgeons. Both surgeons routinely implanted custom femoral stems using a muscle-sparing direct anterior approach in active and/or high-demand patients. All patients completed a questionnaire postoperatively that assessed dance capabilities, the visual analog scale (VAS) for hip pain (0-10), the VAS for satisfaction with surgery (0-10), the Oxford Hip Score (OHS), and the Forgotten Joint Score (FJS). Results: The initial cohort comprised 19 women and 4 men, with a mean age of 50.5 ± 14.9 years and a mean 38.0 ± 14.4 years of dance experience. One patient underwent revision THA for a leg-length discrepancy, leaving 22 patients (25 hips) with a mean follow-up of 3.4 ± 1.4 years. The mean VAS satisfaction score was 9.8 ± 0.6, and the mean VAS pain score was 0.5 ± 1.0. The postoperative OHS and FJS were 46 ± 2 and 92 ± 15, respectively. Overall, 16 patients resumed ballet at 5.1 ± 3.9 months, 3 resumed other types of dance, and 3 did not resume any type of dance. None of the 6 patients who did not resume ballet indicated pain in the operated hip as the reason for stopping. Conclusion: In current or former professional ballet dancers, THA by a muscle-sparing direct anterior approach using a custom femoral stem yielded excellent clinical outcomes at a minimum of 2 years, with the highest satisfaction score of 10 points reported for 88% of hips and 72% of hips being totally pain free. Furthermore, 73% of patients resumed ballet, and 86% resumed dance in general.