Distal Femoral Cortical Hypertrophy after Hip Arthroplasty Using a Cementless Double-Tapered Femoral Stem

Purpose To review 437 hips in 404 patients who underwent total hip arthroplasty (THA) or hemiarthroplasty using the Accolade TMZF stem to determine the incidence and risk factors of distal femoral cortical hypertrophy (DFCH). Methods Records of 437 hips in 169 men and 235 women aged 26 to 100 (mean, 65.7) years who underwent THA (n=293) or hemiarthroplasty (n=144) using the Accolade TMZF femoral stem by 2 senior surgeons and were followed up for a mean of 54.7 months were reviewed. Clinical outcome was assessed using the modified Harris Hip Score and visual analogue score for pain. Proximal femoral geometry and canal flare index were assessed on preoperative radiographs, and DFCH, stem position, subsidence, loosening, and stress shielding were assessed on postoperative radiographs according to the Gruen zone. Results Of 437 hips, 27 (6.2%) developed DFCH and 410 did not. Hips with DFCH had a higher incidence of thigh pain (18.5% vs. 2.2%, p<0.001) and earlier onset of thigh pain (12.3 vs. 20.8 months, p=0.015), compared with those without. Nonetheless, all femoral stems were well-fixed, and no osteolysis or loosening was detected. The 2 groups achieved comparable clinical outcome in terms of Harris Hip Score and pain. The mean canal flare index was higher in hips with than without DFCH (3.706 vs. 3.294, p=0.002). The mean vertical subsidence of the femoral stem was lower in hips with than without DFCH (1.5 vs. 3.4 mm p<0.001). Subsidence negatively correlated with the canal flare index (correlation coefficient= −0.110, p=0.022). The incidence of the DFCH increased with each unit of increment in canal flare index (odds ratio [OR]=1.828, p=0.043) and each year younger in age (OR=0.968, p=0.015). Conclusion The incidence of DFCH in hips with the Accolade TMZF stem was 6.2%. Patients with a higher canal flare index and younger age had a higher incidence of DFCH. Nonetheless, DFCH did not affect clinical outcome or femoral stem stability.

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Mid-Term Outcome of Total Hip Arthroplasty Using a Short Stem

Journal of Orthopaedic Surgery ◽

10.1177/1602400310 ◽

2016 ◽

Vol 24 (3) ◽

pp. 323-327 ◽

Cited By ~ 5

Author(s):

Rajesh Malhotra ◽

Vijay Kumar

Keyword(s):

Total Hip Arthroplasty ◽

Heterotopic Ossification ◽

Hip Arthroplasty ◽

Femoral Stem ◽

Harris Hip Score ◽

Term Outcome ◽

Cortical Hypertrophy ◽

Short Femoral Stem ◽

The Mean ◽

Pedestal Formation

Purpose To review the outcome of total hip arthroplasty (THA) using a short femoral stem in 33 hips. Methods Records of 33 hips in 20 men and 10 women aged 25 to 40 (mean, 30) years who underwent cementless THA using a short femoral stem by a single senior surgeon were reviewed. The diagnosis included avascular necrosis (n=9), ankylosing spondylitis (n=12), rheumatoid arthritis (n=7), post-traumatic arthritis (n=4), and Hurler syndrome (n=1). Clinical outcome was assessed using the Harris Hip Score. Radiological outcome was assessed according to a modified Gruen zoning system. Stem positioning (neutral, varus, valgus) and bone contact were evaluated, as were fixation and early host response as well as subsidence and changes in the calcar region (zone 5). Trabecular response (trabecular attachment), spot welds, cortical hypertrophy, and pedestal formation were determined. Heterotopic ossification was graded by the Brooker classification. Results The mean follow-up period was 6.5 years. The mean Harris Hip Score improved from 40 to 90. All hips achieved immediate postoperative stability. No patient had thigh pain. Four hips had varus placement (5°–7°) of the stem; all were asymptomatic and remained stable without any migration. Evidence of proximal load transfer (endosteal spot welds) between the endosteum and the stem in zones 2 and/or 4 was noted in 12 hips on both sides and in 8 hips on the lateral side only. At one year, all stems showed evidence of osseointegration. None had subsidence or progressive varus migration. There was no radiolucent line or osteolysis around the stem, pedestal formation or buttressing at the prosthesis tip, or cortical hypertrophy. One patient had grade I heterotopic ossification that was not clinically significant. One patient had a 1.5 cm leg lengthening. One patient had a discharging sinus, a loosened acetabular component, and intrapelvic migration at 2 years and underwent implant removal and debridement. One patient developed a crack in the proximal femur even with the smallest stem. The stem was fixed with cerclage wiring and remained stable with no migration. Conclusion A short femoral stem design that transfers load proximally through a prominent lateral flare achieved good short-term outcome in younger patients. Nonetheless, the ease of removal and preservation of bone at the time of revision should guide the choice of the design of the short stem.

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Extensively hydroxyapatite-coated long femoral stem revision hip arthroplasty: Clinical outcome and survivorship in 11 to 17.5 years follow up

Journal of Orthopaedics Trauma and Rehabilitation ◽

10.1177/2210491720985119 ◽

2021 ◽

pp. 221049172098511

Author(s):

Liu Wing Hong ◽

Chung Kwong Yin ◽

Cheung Kin Wing ◽

Chiu Kwok Hing ◽

Ho Ki Wai Kevin

Keyword(s):

Survival Rate ◽

Clinical Outcome ◽

Hip Arthroplasty ◽

Femoral Stem ◽

Revision Hip Arthroplasty ◽

Harris Hip Score ◽

High Survival ◽

Stem Revision ◽

The Mean

Extensively coated long femoral stem revision hip arthroplasty is based on the principle of distal fixation at diaphyseal region, which can overcome the problem of proximal femoral bone stock deficiencies causing inadequate support and unstable fixation when using conventional length femoral stem. We performed a retrospective cohort analysis of 43 cases of revision hip arthroplasties using extensively hydroxyapatite-coated long femoral stem performed in our department from Jan 1998 to Dec 2005. Patients’ background demographic data, operative details and clinical outcome were analyzed. The mean age at revision surgery was 63.7 (32–84). The mean follow-up period was of 13.8 years (11–17.5 years). In the latest follow up, all patients reported either no or mild hip or thigh pain. 29.2% of patients were able to walk unaided, 25.0% were able to walk with stick, and 33.3% were able to walk with quadripod. The average Harris hip score measured in the latest follow up was 78.8 (55–100). 4.7% were complicated with implant loosening requiring re-revision and 4.7% were complicated with implant infection requiring implant removal. The survival rate was 89.9% at 17.5 years. The femoral stem without femoral fixation augmentation had better survivorship as compared with those with augmentation (p = 0.038). Extensively hydroxyapatite-coated long femoral stem is a good option for revision hip arthroplasty with good clinical outcome and high survival rate.

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Clinical outcomes and survival rate of cementless modular distal fixation femoral stem for revision hip arthroplasty: A minimum 6-year follow-up

Journal of Orthopaedic Surgery ◽

10.1177/2309499018812241 ◽

2018 ◽

Vol 26 (3) ◽

pp. 230949901881224 ◽

Cited By ~ 1

Author(s):

Joon Soon Kang ◽

Yeop Na ◽

Bong Seong Ko ◽

Yoon Sang Jeon

Keyword(s):

Survival Rate ◽

Hip Arthroplasty ◽

Periprosthetic Fracture ◽

Femoral Stem ◽

Revision Hip Arthroplasty ◽

Harris Hip Score ◽

The Mean ◽

Distal Fixation

Purpose: Revision hip arthroplasty is a very challenging procedure. Use of a modular distal fixation stem is one of the available options for revision arthroplasty in patients with proximal femoral bone deficiency. The purpose of this study was to evaluate mid- to long-term outcomes of cementless modular distal fixation femoral stem implantation in revision hip surgery. Methods: Clinical and radiological findings, complications, and stem survival rate were analyzed for 46 patients (48 hips) who underwent revision hip arthroplasty using a cementless modular distal fixation femoral stem. The mean patient age was 58.8 years (range 31–82 years) and the mean follow-up period was 95 months (72–122 months). The preoperative diagnoses were aseptic loosening (36 hips), infection (4 hips), ceramic fracture (4 hips), and femoral periprosthetic fracture (4 hips). Results: The mean Harris hip score improved from 56.6 preoperatively to 88.2 postoperatively at the last follow-up. All hips showed stable osteointegration and firm fixation. Complications involved four hips (8.3%); there was one case each of periprosthetic fracture, delayed union of osteotomy site, femoral perforation, and infection. One stem re-revision was performed for deep infection of the femoral side. The Kaplan–Meier survival rate was 97.6% at the final follow-up. Conclusion: Revision hip arthroplasty using a cementless modular distal fixation femoral stem showed satisfactory initial firm fixation and mid- to long-term survival rate. Complications can be minimized by careful surgical planning and meticulous procedure.

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Clinical and Radiographic Evaluation of a Commercially Pure Cancellous-Structured Titanium Press Fit Total Hip Prosthetic Stem: Ten-Year Followup of the “Natural Hip” Femoral Stem

Advances in Orthopedic Surgery ◽

10.1155/2014/814156 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7

Author(s):

Thomas B. Pace ◽

James C. Karegeannes ◽

M. Jason Palmer ◽

Stephanie L. Tanner ◽

Rebecca G. Snider

Keyword(s):

Hip Arthroplasty ◽

Groin Pain ◽

Stress Shielding ◽

Femoral Stem ◽

Thigh Pain ◽

Radiographic Evaluation ◽

Total Hip ◽

Press Fit ◽

Age Range ◽

Hip Arthroplasties

This study evaluates the outcomes of 92 hip arthroplasties using a press fit, tapered, split tip, proximally porous ingrowth (CSTi) femoral stem (Zimmer Natural Hip) in consecutive hip arthroplasty patients followed for an average of ten years postoperatively (range 5–16 years). Patients were functionally and radiographically evaluated using Harris Hip Scores and plain radiographs assessing postarthroplasty groin or thigh pain and radiographic signs of stem subsidence, proximal femoral fixation, stress shielding, and related calcar resorption. At followup of 5–10 years, the incidence of groin pain and thigh pain was 9.1% and 3.6%, respectively. This incidence improved over time. Beyond 10 years of followup, groin pain was 2.7% and thigh pain zero. In 89% of cases, there was solid contact between the calcar and the undersurface of the stem collar. Five cases were revised for instability (5.4%). The Harris Hip Scores and the incidence of thigh or groin pain were very favorable compared to other reported press fit total hip arthroplasty stems and not significantly different across a broad age range. There were no cases of stem loosening of failure of bony ingrowth into the stem.

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EVALUATION OF THE RESULTS OF CEMENTLESS TOTAL HIP ARTHROPLASTY IN PATIENTS WITH STAGES IV, V AND VI OSTEONECROSIS OF THE FEMORAL HEAD

Tạp chí Y học Cộng đồng ◽

10.52163/jcm.v62i1.6 ◽

2020 ◽

Vol 62 (1) ◽

Author(s):

Đắc Việt Mai ◽

Thu Thủy Nguyễn

Keyword(s):

Femoral Head ◽

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Bone Ingrowth ◽

Femoral Stem ◽

Stage Iv ◽

Harris Hip Score ◽

Total Hip ◽

The Mean

This study aimed to report the outcome of total hip arthroplasty (THA) with an extensive hydroxyapatite (HA) coating for the fixation of a tapered femoral stem (Corail) in patients aged 60 or younger than sixty years with stage IV, V và VI osteonecrosis of femoral head. Subject and method: Descriptive prospective research of ninety osteonecrotic hips in ninety patients were available for clinical and radiographic analyses at minimum follow-up of 5 years. Results and Conclusion: The mean Harris hip score improved from 43.74 ± 9,25points preoperatively to 96.67 ± 3.82points at final follow-up. Seventy-four (100%) hips demonstrated stable bone ingrowth. No hips showed acetabular or femoral osteolysis radiolucency and loosening, or required revision for aseptic loosening. We believe that cementless THA with a Corail stem is a promising procedure for patients with osteonecrosis of the femoral head.

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The Corail Stem as a Reverse Hybrid – Survivorship and X-Ray Analysis at 10 Years

Hip International ◽

10.5301/hipint.5000477 ◽

2017 ◽

Vol 27 (4) ◽

pp. 354-360 ◽

Cited By ~ 5

Author(s):

Helge Wangen ◽

Lars Nordsletten ◽

Jens G. Boldt ◽

Anne M. Fenstad ◽

David E. Beverland

Keyword(s):

Clinical Outcome ◽

Femoral Stem ◽

Successful Outcome ◽

Harris Hip Score ◽

Heterotopic Bone ◽

Heterotopic Bone Formation ◽

X Rays ◽

The Mean ◽

Cemented Cup

Background The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA have been sparsely described. We report our experience of reverse hybrid THA, using the Elite plus polyethylene cemented cup together with the Corail fully hydroxyapatite-coated uncemented stem and a 28-mm alumina ceramic head. Patients and methods 132 consecutive reverse hybrid hip arthroplasties were performed from January 2000 to December 2003 in 126 patients with a mean age of 54.3 years (28-65). All patients were routinely reviewed at 3 months, 1, 5, 7 and 10 years postoperatively. At each follow-up patients were seen either by a consultant orthopaedic surgeon or a senior trainee. Anteroposterior pelvic and lateral x-rays of the hip were taken at each visit. To estimate the survival of the THAs we used the Kaplan-Meier method with 95% confidence interval (CI). Logistic regression analysis was performed to determine which factors affected the presence of radiolucency around the femoral stem. Results The mean follow-up was 11.1 years (9.0-14.2). 1 patient was lost to follow-up, and 7 patients were deceased at the time of 10-year follow up. At 10 years 7 patients have had further surgery. 5 for infection, 1 periprosthetic femoral fracture and 1 heterotopic bone formation. All stems were classified as well fixed. 2 cups were defined as loose at 10 years. 1 patient is scheduled for revision the other refused revision. The clinical outcome and radiological findings were assessed in 123 hips. The mean Harris Hip Score was 94 (35-100) at 10 years and the mean WOMAC score was 89 (30.2-100). Conclusions We report good results with respect to clinical outcome and survival of the reverse hybrid concept in patients younger than 65. A successful outcome depends on meticulous preoperative planning, use of modern cementing techniques in the acetabulum and experience in implanting an uncemented stem.

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Cementless total hip arthroplasty after failed internal fixation of acetabular fractures: A single center experience of 25 consecutive patients

Journal of Orthopaedic Surgery ◽

10.1177/2309499020910666 ◽

2020 ◽

Vol 28 (2) ◽

pp. 230949902091066

Author(s):

Min Uk Do ◽

Won Chul Shin ◽

Nam Hoon Moon ◽

Suk-Woong Kang ◽

Kuen Tak Suh

Keyword(s):

Total Hip Arthroplasty ◽

Internal Fixation ◽

Hip Arthroplasty ◽

Femoral Stem ◽

Harris Hip Score ◽

Acetabular Fractures ◽

Walking Ability ◽

Total Hip ◽

The Mean

Purpose: Total hip arthroplasty (THA) is an available surgical option for failed acetabular fracture, previously managed by open reduction and internal fixation. This study aimed to report the postoperative outcomes of cementless THA in patients with this condition. Materials and Methods: Between November 2000 and September 2016, 25 consecutive cementless THAs for failed internal fixation after acetabular fractures with a minimum follow-up of 2 years were analyzed. The mean age at the time of surgery was 58 years (36–85 years), and the time elapsed between fracture and THA was 70 months (7–213 months). Clinical and radiologic evaluations were performed on all patients. Results: Clinically, the mean Harris hip score at the last follow-up was 88 points. Walking ability recovered to pre-injury status in 92% patients, and activities of daily living recovered in 96% patients. Radiographically, none of the acetabular cups showed evidence of migration and loosening during the mean follow-up of 50 months. All cases showed stable femoral stem fixation at the last follow-up. Dislocation occurred in three cases (12%). Conclusion: Outcomes of cementless THA after failed internal fixation for acetabular fractures were satisfactory. However, a relatively high incidence of postoperative dislocation is still a concern.

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Impact of Femoral Stem Prosthesis Tip On Femoral Cortex After Primary Total Hip Arthroplasty (THA)

10.21203/rs.3.rs-885668/v1 ◽

2021 ◽

Author(s):

Yang Zhang ◽

Qiang Wang ◽

Qi Cheng ◽

Dasai Wang ◽

Jian Cheng ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Femoral Stem ◽

Thigh Pain ◽

Harris Hip Score ◽

Total Hip ◽

Femoral Cortex ◽

Increased Risk ◽

The Impact ◽

Primary Total Hip Arthroplasty

Abstract Background: The mechanisms of pain after total hip arthroplasty (THA) is not clear, which may be related to its impact on the femoral cortex caused by improper prosthesis placement. This study was to explore the the impact of the femoral stem prosthesis on the femoral cortex after implantation, and its relationship with postoperative thigh pain. Methods: Totally 172 patients who underwent primary THA were retrospectively analyzed, who were divided into the impact (n=25) and non-impact (n=147) groups. Contact or penetration of the femoral stem prosthesis tip with the distal femoral cortex was defined as impingement. Patients were followed up and recorded.Results: In the patients undergoing primary THA, 25 patients (14.5%) had impact, including 7 males and 18 females. Most of the patients in the impact group were women of small stature. In the impact group, the postoperative thigh pain was more obvious, and the Harris Hip score (HHS) was lower, compared with the non-impact group (P < 0.05). The regression analysis showed that height (OR=1.196; 95%CI: 1.059-1.351; P=0.004) and prosthesis implant angle (PIA) (OR=0.208; 95%CI: 0.074-0.584; P=0.003) were important risk factors for distal femoral cortical impingement in patients who underwent THA. Conclusions: Patients with short stature should have adequate preoperative planning for primary THA, to prevent increased risk of postoperative thigh pain due to impinging femoral stem implants.

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Partial two-stage exchange: an alternative method for infected total hip arthroplasty

BMC Musculoskeletal Disorders ◽

10.1186/s12891-021-04550-9 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Mumingjiang Yishake ◽

Lan Tang ◽

Xi Chen ◽

Yuejian Wang ◽

Rongxin He

Keyword(s):

Total Hip Arthroplasty ◽

Clinical Outcomes ◽

Hip Arthroplasty ◽

Femoral Stem ◽

Severe Trauma ◽

Harris Hip Score ◽

Two Stage ◽

Total Hip ◽

The Mean

Abstract Background Total two-stage exchange is commonly used in clinical practice as a treatment for infected total hip arthroplasty (THA); however, this approach involves considerable limitations, including significant bone loss and severe trauma. This retrospective cohort study was conducted to evaluate clinical outcomes following the use of partial two-stage exchange (PTE) for infected THA. Methods We performed a retrospective analysis of 28 patients with infected THA who were treated by PTE between September 2000 and June 2019. Eligibility for PTE was limited to patients with a well-fixed femoral stem prosthesis. In the first stage of the operation, the femoral stem prosthesis was preserved; subsequently, the acetabular prosthesis, liner, and head were replaced with an antibiotic-loaded spacer. The new prosthesis was then implanted into patients and monitored for at least 3 months to ensure freedom from infection. Results Patients were followed for an average of 4 years (range, 2–11 years), with an overall success rate of 85.7% (24/28). The mean Harris hip score at the final follow-up was 76.2 ± 11.7 points. Conclusions The findings of this study suggest that PTE could be an acceptable option for a subset of patients with infected THA, offering a satisfactory infection control rate and clinical outcomes comparable to those of total two-stage exchange, but with less harm.

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Long-Term Results of Hip Arthroplasty Using Extensive Porous-Coated Stem—A Minimum Follow-Up of 15 Years

Geriatric Orthopaedic Surgery & Rehabilitation ◽

10.1177/2151459319892787 ◽

2019 ◽

Vol 10 ◽

pp. 215145931989278

Author(s):

Myung Hoon Park ◽

Yung Hun Youn ◽

Joon Soon Kang ◽

Kyoung Ho Moon

Keyword(s):

Heterotopic Ossification ◽

Hip Arthroplasty ◽

Stress Shielding ◽

Femoral Stem ◽

Long Term Results ◽

Harris Hip Score ◽

Radiographic Findings ◽

Femoral Stems

Introduction: We report the clinical and radiographic results of hip arthroplasty using extensive porous-coated stems over 15 years in Korea. Methods: This retrospective study included 210 patients (268 hips) who underwent total hip arthroplasties (232 hips) and bipolar hemiarthroplasties (36 hips) between June 1996 and December 2002 for avascular necrosis of the femoral head, hip fracture, or osteoarthritis, after excluding those who died or were lost to follow-up. One senior author (K.H.M.) evaluated Harris Hip Score (HHS); limping gait; and leg length discrepancy, and 3 independent reviewers assessed the radiographic findings, including the level of stress shielding, Dorr classification, subsidence and loosening of femoral stem, heterotopic ossification (Brooker classification), osteolysis of acetabulum, wear rate of the polyethylene liner, component loosening, and revision rate. Results: The mean follow-up duration was 16.9 years and average age at operation was 50.9 years. The HHS improved at the last follow-up. Stress shielding was grade 1 in 185 hips, grade 2 in 35 hips, grade 3 in 37 hips, and grade 4 in 11 hips. Femoral stem subsidence was <3 mm in 4 hips and >3 mm in 6 hips. Femoral stems with stable bony ingrowth were observed in 258 hips, fibrous stable femoral stems in 4 hips, and unstable femoral stems in 6 hips. Heterotopic ossification was class 1 in12 and class 2 in 4 hips. Revision surgery was performed for periprosthetic osteolysis of cup (45 hips), recurrent dislocation (1), unstable femoral stem (1), and infection (1). The Kaplan-Meier survivorship at the 15-year follow-up was 86.2%. The survivorship of femoral stem at 15 years was 99.3%, and if including impending revision due to unstable femoral stem was 97.1%. Disscussion: This study has all the limitations inherent with a retrospective design. However, a large number of patients in this cohort operated on by a single surgeon and a long-term follow-up are some of the potential advantages of the current study. Conclusions: At the 15-year follow-up, extensive porous-coated stem showed relatively good survivorship even in geriatric patients (Dorr type C).

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