Clinical results of minimally invasive anterolateral THA using a short femoral stem

2016 ◽  
Author(s):  
Toshie Sasaki
Keyword(s):  
Minimally Invasive ◽  
Femoral Stem ◽  
Clinical Results ◽  
Short Femoral Stem

scholarly journals Microendoscopy-assisted extraforaminal lumbar interbody fusion for treating single-level spondylodesis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Motohide Shibayama ◽  
Guang Hua Li ◽  
Li Guo Zhu ◽  
Zenya Ito ◽  
Fujio Ito
Keyword(s):  
Minimally Invasive ◽  
Spinal Canal ◽  
Interbody Fusion ◽  
Facet Joint ◽  
Clinical Results ◽  
Invasive Technique ◽  
Clinical Effects ◽  
Lumbar Interbody Fusion ◽  
Disc Space ◽  
Single Level

Abstract Background Lumbar interbody fusion is a standard technique for treating degenerative lumbar disorders involving instability. Due to its invasiveness, a minimally invasive technique, extraforaminal lumbar interbody fusion (ELIF), was introduced. On surgically approaching posterolaterally, the posterior muscles and spinal canal are barely invaded. Despite its theoretical advantage, ELIF is technically demanding and has not been popularised. Therefore, we developed a microendoscopy-assisted ELIF (mELIF) technique which was designed to be safe and less invasive. Here, we aimed to report on the surgical technique and clinical results. Methods Using a posterolateral approach similar to that of lateral disc herniation surgery, a tubular retractor, 16 or 18 mm in diameter, was placed at the lateral aspect of the facet joint. The facet joint was partially excised, and the disc space was cleaned. A cage and local bone graft were inserted into the disc space. All disc-related procedures were performed under microendoscopy. The spinal canal was not invaded. Bilateral percutaneous screw-rod constructs were inserted and fixed. Results Fifty-five patients underwent the procedure. The Oswestry Disability Index and visual analogue scale scores greatly improved. Over 90% of the patients obtained excellent or good results based on Macnab’s criteria. There were neither major adverse clinical effects nor the need for additional surgery. Conclusions mELIF is minimally invasive because the spinal canal and posterior muscles are barely invaded. It produces good clinical results with fewer complications. This technique can be applied in most single-level spondylodesis cases, including those involving L5/S1 disorders.

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

2016 ◽  
Vol 24 (3) ◽  
pp. 323-327 ◽  
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.

Varus malalignment of short femoral stem not associated with post-hip arthroplasty fracture

2021 ◽  
Author(s):  
Scott T. Nishioka ◽  
Samantha N. Andrews ◽  
Kristin Mathews ◽  
Cass K. Nakasone
Keyword(s):  
Hip Arthroplasty ◽  
Femoral Stem ◽  
Varus Malalignment ◽  
Short Femoral Stem

Comparison of Short-Term Clinical Results and Radiologic Changes Between Two Different Minimally Invasive Decompressive Surgical Methods for Lumbar Canal Stenosis

Spine ◽  
2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Sunao Tanaka ◽  
Kanichiro Wada ◽  
Gentaro Kumagai ◽  
Toru Asari ◽  
Shuichi Aburakawa ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Clinical Results ◽  
Short Term ◽  
Lumbar Canal Stenosis ◽  
Canal Stenosis ◽  
Surgical Methods

scholarly journals Results of a novel surgical technique for iridodialysis repair using segments

2021 ◽  
Author(s):  
Ugur Unsal ◽  
Huri Sabur ◽  
Mehmet Soyler
Keyword(s):  
Surgical Technique ◽  
Minimally Invasive ◽  
Clinical Results ◽  
Study Data ◽  
Invasive Technique ◽  
Minimally Invasive Surgical ◽  
Corrected Distance Visual Acuity ◽  
History Of ◽  
Surgical Manipulation

Abstract Purpose: To describe a novel surgical technique for iridodialysis repair using iris retractor segments and report its clinical results.Methods: 53 eyes of 53 patients who underwent surgery for iridodialysis repair were enrolled in this retrospective study. Data recorded from patient files consisted of age, sex, history of trauma, surgical indications and type of surgery, preoperative and postoperative corrected distance visual acuity (CDVA), intraocular pressure (IOP), complications, and follow-up time. The novel, minimally invasive surgical technique was explicitly described in detail.Results: Mean follow-up time was 34.4 (range 12-84) months. The subjects were 29 (54.7%) men and 26 (45.3%) women, and the mean age was 56.6±14.0 years. Iridodialysis repair performed using one segment in 37 (69.8%) eyes, two segments in 15 (28.3%) eyes, and three segments in 1 (1.9%) eye. Pupilloplasty was performed in 17 eyes due to wide pupil diameter. The iridodialysis repair was combined with lens removal in 48 eyes, and anterior vitrectomy was performed in 10 eyes. CDVA significantly improved after surgery (p<0.001). Post-traumatic IOP rise was the most common complication, and six patients needed medical therapy for glaucoma control.Conclusion: Iridodialysis repair using iris retractor segment is a minimally invasive technique and found to be safe and effective, providing less surgical manipulation and surgical time than other techniques.

scholarly journals Hand-assisted minimally invasive distal pancreatectomy: Review of clinical results and predictors of conversion to an open approach

HPB ◽  
2020 ◽  
Vol 22 ◽  
pp. S179
Author(s):  
K. Wissinger ◽  
J. Reza ◽  
M. Uwah ◽  
S. Patel ◽  
J. Wang ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Distal Pancreatectomy ◽  
Clinical Results ◽  
Open Approach

scholarly journals The loading patterns of a short femoral stem in total hip arthroplasty: gait analysis at increasing walking speeds and inclines

2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Anatole V. Wiik ◽  
Mads Brevadt ◽  
Hardeep Johal ◽  
Kartik Logishetty ◽  
Oliver Boughton ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Gait Analysis ◽  
Hip Arthroplasty ◽  
Femoral Stem ◽  
Total Hip ◽  
Loading Patterns ◽  
Short Femoral Stem ◽  
Walking Speeds

scholarly journals The Ringloc liner compared with the Hexloc liner in total hip arthroplasty

2009 ◽  
Vol 1 (1) ◽  
pp. 16 ◽  
Author(s):  
Olof Sköldenberg ◽  
Mats Salemyr ◽  
Olle Muren ◽  
Åke Johansson ◽  
Torbjörn Ahl ◽  
...  
Keyword(s):  
Survival Rate ◽  
Penetration Rate ◽  
Osteolytic Lesion ◽  
Femoral Stem ◽  
Clinical Results ◽  
Linear Wear ◽  
Osteolytic Lesions ◽  
Linear Wear Rate ◽  
Head Penetration ◽  
Pelvic Osteolysis

The aim of this study was to compare the 10-year survival rate, pelvic osteolysis frequency and linear head penetration rate of the Hexloc and Ringloc liners used together with a partially threaded porous and hydroxyapatite coated cup and the Bi-Metric uncemented femoral stem. The 15-year results for the cup with the Hexloc liner are also reported. We included 332 consecutive hips (166 Hexloc and 166 Ringloc) on 281 patients in the study. Revisions of prosthesis components were recorded and pelvic osteolytic lesions were assessed using radiographs and computed tomography. The linear head penetration rate was measured using the Martell method. The 10-year survival rate of the liner with revision due to liner wear and/or osteolysis as endpoint was 88% for the Hexloc liner and 98% for the Ringloc liner. The 15-year survival rate of the Hexloc liner was 67%. Pelvic osteolysis was found in 27% of the Hexloc and 19% of the Ringloc hips. After 15 years, 53% of the Hexloc hips had developed an osteolytic lesion. The linear head penetration rate was 0.16 mm/year for the Hexloc liner and 0.12 mm/year for the Ringloc liner. This paper is the first to describe the rapidly deteriorating survival up to 15 years with the old generation gamma-in-air sterilized polyethylene used in Hexloc liners. The newer Ringloc liner with the ArCom™ polyethylene has superior clinical results but a linear wear rate and frequency of osteolytic lesions that is higher than expected.

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