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Bone & Joint Research
Vol. 13, Issue 11 | Pages 647 - 658
12 Nov 2024
Li K Zhang Q

Aims

The incidence of limb fractures in patients living with HIV (PLWH) is increasing. However, due to their immunodeficiency status, the operation and rehabilitation of these patients present unique challenges. Currently, it is urgent to establish a standardized perioperative rehabilitation plan based on the concept of enhanced recovery after surgery (ERAS). This study aimed to validate the effectiveness of ERAS in the perioperative period of PLWH with limb fractures.

Methods

A total of 120 PLWH with limb fractures, between January 2015 and December 2023, were included in this study. We established a multidisciplinary team to design and implement a standardized ERAS protocol. The demographic, surgical, clinical, and follow-up information of the patients were collected and analyzed retrospectively.


Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_10 | Pages 43 - 43
1 Oct 2020
Griffin WL Li K Cuadra M Otero J Springer B
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Introduction

Prosthetic joint infection (PJI) is an devastating complication after total hip arthroplasty (THA). The common treatment in the US is a two-stage exchange which can be associated with significant morbidity and mortality. The purpose of this study was to analyze complications in the treatment course of patients undergoing two-stage exchange for PJI THA and determine when they occur.

Methods

We analyzed all patients that underwent two-stage exchange arthroplasty for treatment of PJI after THA from January 2005 – December 2017 at a single institution. Complications were categorized as medical or surgical, divided into three intervals: (1) inter-stage, (2) early post-reimplantation (<90 days) and (3) late post-reimplantation (> 90 days). Minimum follow up was one year. Success was based on the Musculoskeletal Infection Society (MSIS) definition.


The Bone & Joint Journal
Vol. 102-B, Issue 6 Supple A | Pages 145 - 150
1 Jun 2020
Hartzler MA Li K Geary MB Odum SM Springer BD

Aims

Two-stage exchange arthroplasty is the most common definitive treatment for prosthetic joint infection (PJI) in the USA. Complications that occur during treatment are often not considered. The purpose of this study was to analyze complications in patients undergoing two-stage exchange for infected total knee arthroplasty (TKA) and determine when they occur.

Methods

We analyzed all patients that underwent two-stage exchange arthroplasty for treatment of PJI of the knee from January 2010 to December 2018 at a single institution. We categorized complications as medical versus surgical. The intervals for complications were divided into: interstage; early post-reimplantation (three months); and late post-reimplantation (three months to minimum one year). Minimum follow-up was one year. In total, 134 patients underwent a first stage of a two-stage exchange. There were 69 males and 65 females with an mean age at first stage surgery of 67 years (37 to 89). Success was based on the new Musculoskeletal Infection Society (MSIS) definition of success reporting.


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_11 | Pages 38 - 38
1 Oct 2019
Hartzler MA Li K Geary M Odum SM Springer BD
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Introduction

Two-stage exchange arthroplasty remains the gold standard for treatment of PJI with reported success rates of 85–90%. Complications that occur during treatment are often not reported or considered in the success rate. The purpose of this study was to analyze complications in patients undergoing two-stage exchange and determine when they occur.

Methods

We analyzed all patients that underwent two-stage exchange arthroplasty for treatment of chronic PJI of the knee from 2010 to 2018. We categorized complications as medical vs. surgical. The intervals for complications were divided into: interstage, early post re-implant (3 months) and late post re-implant (3 months to minimum 1 year). Minimum follow-up to evaluate complications was one year.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_7 | Pages 85 - 85
1 May 2016
Cipriano C Erdle N Li K Curtin B
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Background

The optimal strategy for postoperative deep venous thrombosis (DVT) prophylaxis remains among the most controversial topics in hip and knee arthroplasty. Warfarin, the most commonly used chemical anticoagulant, initially causes transient hypercoagulability; however the optimal timing of treatment with respect to surgery remains unclear. Our purpose was to evaluate the effects of pre- versus postoperative initiation of warfarin therapy with a primary endpoint of perioperative change in hemoglobin (pre- minus post-operative level), with secondary endpoints of postoperative International Normalized Ratio (INR), drain output, and bleeding/thrombotic events.

Methods

A quasi-experimental study design was employed, under which patients were assigned to begin taking warfarin the night prior to surgery or the night following surgery based on day of the week seen in clinic. An a priori power analysis was conducted in order to ensure appropriate enrollment to detect a 0.5 g/dL difference in perioperative change in hemoglobin between groups, given an alpha level of 0.05 and beta of 0.80. Based on the results, the study included all primary, elective total hip and knee arthroplasties performed by a single surgeon over a 12 month period. Fifteen patients were excluded (7 chronic anticoagulation, 3 hip fractures, 2 medical contraindications, 3 simultaneous procedures), leaving 165 cases (108 hips, 57 knees) available for study. Of these, 73 received warfarin preoperatively (49 hips, 24 knees) and 92 postoperatively (59 hips, 33 knees). Warfarin was dosed according to a standard nomogram in both groups. INR (on postoperative days 1 and 2), perioperative decrease in hemoglobin (difference between level preoperatively and on postoperative days 1 and 2), and drain outputs were compared between groups using a student t test. Adverse events (transfusions, hematomas, epidural complications, and pulmonary embolus) were compared using two-tailed Fischer's exact test.


Orthopaedic Proceedings
Vol. 90-B, Issue SUPP_III | Pages 475 - 475
1 Aug 2008
Liu T Chu WC Li K Yeung BH Guo L Man GC Lam WW Wong ST Cheng JC
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Aim: To investigate whether there is any difference in regional brain volumes between AIS patients and age matched, sex matched control subjects.

Method and Materials: 20 adolescent idiopathic scoliosis (AIS) female patients (age ranged from 11 yrs to 18 yrs, mean age of 14.5 yrs) and 20 sex matched, age matched controls have undergone MRI brain examination performed with a 1.5T scanner (Sonata, Siemens Medical Solutions, Erlanger, Germany). A Magnetization Preparation Rapid Acquisition Gradient Echo (MPR) sequence was used. Volumes of neuroanatomical regions were quantitated automatically by using whole brain segmentation technique of atlas-based hybrid warping. The whole brain was classified into 100 fine anatomical regions.

The results were taken as significant when p value was less than 0.05.

Results: Significant unilateral regional differences were found in the following regions:

Left thalamus and left postcentral gyrus of AIS patients were significantly larger than the control subjects. Anterior and posterior limb of right internal capsule, right caudate nucleus, right cuneus and left middle occipital gyurs of AIS patients were significantly smaller than the control subjects. Some regions were bilaterally involved: Perirhinal and hippocampus regions were larger in AIS while inferior occipital gyrus and precuneus were smaller than the corresponding regions in the control subjects. In the midline, the volumes of corpus callosum and brainstem in AIS patients were significantly larger than the control subjects.

Conclusion: Our study found that significant differences in particular regional brain volumes exist between AIS patients and the controls. Most of these regions involved the brain unilaterally, indicating that there might be abnormal asymmetrical development of the brain in AIS. This is the first study of its kind to show the presence of L-R asymmetry of regional brain volume difference in AIS patients as compared to normal controls. The findings might also help to explain the reported poor performance in the combined visual and proprioceptive test, spatial orientation test, abnormal nystagmus response to calorie test, and impaired postural balance in AIS patients.