Early Outcomes of Primary Total Hip Arthroplasty for Osteonecrosis of the Femoral Head in Patients with Human Immunodeficiency Virus in China

Background:

Studies have reported that patients with human immunodeficiency virus (HIV) have a high incidence of osteonecrosis of the femoral head (ONFH). Total hip arthroplasty (THA) is an effective management of ONFH. However, little data exist regarding the use of THA for the HIV patients with ONFH in China. This study reviewed the outcomes of HIV-positive patients who underwent THA for ONFH, compared with HIV-negative individuals.

Methods:

The patients who underwent THA for ONFH from September 2012 to September 2014 in Beijing Ditan Hospital, Capital Medical University were retrospectively studied. Twenty-eight HIV-positive patients and 35 HIV-negative patients underwent 48 THAs and 45 THAs with cementless components, respectively. Medical records and follow-up data were reviewed. Harris Hip Score (HHS) was applied to evaluate the pain and function of the hips before and after THA. Complications such as wound healing, surgical site infection, deep venous thrombosis, pulmonary embolism, sepsis, mortality, and complications from the prosthesis were reviewed. The operation time, blood loss, and hospital stay were compared between the two groups.

Results:

The mean follow-up period was 19.5 ± 5.8 months (ranging from 6 to 30 months). The mean age of the HIV-positive patients with osteonecrosis at the time of surgery was 35 years old, which was significantly lower than that of the HIV-negative group (42 years old) (P < 0.05). The HIV-positive patients underwent surgery a mean of 2.5 years after their original symptoms, which was significantly shorter than the HIV-negatives’ (mean 4 years) (P < 0.05). Among HIV-positive patients, the prevalence of being male and rate of bilateral procedures were significantly higher than those in the HIV-negative group (P < 0.05). The operation time in HIV-positive patients was significantly longer than that in HIV-negative patients (P < 0.05). There were no significant differences in blood loss or hospital stay between the two groups (P > 0.05). The HHSs of two groups significantly improved after THAs (P < 0.05), without significant difference between two groups. No wound complication, sepsis, mortality, prosthesis complication, and occupational exposure occurred, except for two cases of heterotopic ossification and one case of humeral head necrosis.

Conclusions:

ONFH is more likely to occur bilaterally in younger HIV-positive males. The development of osteonecrosis seems faster in HIV-positive patients than in HIV-negative patients. This should be cautionary for asymptomatic HIV-positive patients with low viral RNA level and in the primary HIV stage. Despite longer operation times in the HIV-positive patients than in the HIV-negative patients, THA is still a safe and efficient approach to treat ONFH in HIV-positive patients. The incidence of complications is much lower than previously reported. However, the long-term follow-up is needed.

[Healing status of surgical incisions in human immunodeficiency virus-positive patients with fractures]

OBJECTIVE

To observe the healing status of surgical incisions in human immunodeficiency virus (HIV)-positive patients with fractures and explore the factors related with poor wound healing, treatment and preventive measures.

METHODS

Retrospective analyses were performed for the clinical data of 61 HIV-positive patients with fractures. And the influencing factors, treatment and outcomes of poor wound healing were analyzed.

RESULTS

Among them, the healing status was good (n = 50) and poor (n = 11). And the outcomes included redness (n = 10), oozing (n = 8), split (n = 3), infection (n = 2), hematoma (n = 1), fat liquefaction (n = 2) and delayed healing (n = 2). All healed well after treatment. There was no infection or death during the follow-up period. Compared with HIV-negative patients, it was not statistically significant in wound infection. However, poor healing rates were significantly different (P < 0.05). The risk factors included advanced age, low body mass index, low albumin, low hemoglobin, low total lymphocyte count, low CD4⁺ T lymphocyte count, high HIV infection clinical stage, long operative duration, emergency surgery and incision contamination.

CONCLUSION

In HIV-positive patients with fractures, the healing of surgical incision is generally good. However few have poor wound healing due to multiple factors. If poor healing is identified early and handled timely and correctly, good healing ensues.

[Effect of wound healing of orthopedic surgery in human immunodeficiency virus infected patients with perioperative adjuvant treatments]

OBJECTIVE

To observe the early wound healing of orthopedic surgery in human immunodeficiency virus (HIV) carrier patients treated with optimized auxiliary treatments.

METHODS

During a period of 48 months, according to the inclusion and exclusion criteria plus CD4⁺ T lymphocyte count, the patients scheduled for orthopedic surgery (including HIV positive and negative) were divided into group A (HIV positive, CD4<500/ml) with optimized auxiliary treatments, group B (HIV positive, CD4 ≥ 500/ml) and group C (HIV negative) on prophylactic antibiotic therapy alone. Wound healing of 3 groups were observed postoperatively. The rates of clinical wound infection were compared among 3 groups.

RESULTS

A total of 471 cases (n = 79, HIV+; n = 392, HIV-) were selected due to fresh fracture (n = 544, 77.28%), fracture of spine (n = 57, 12.31%), mal-union (n = 13, 2.76%), aseptic necrosis (n = 15, 3.18%) and osteoarthritis (n = 21, 4.46%). During surgery, early open reduction and plate screw internal fixation (group A, n = 23; group B, n = 21; group C, n = 274); pedicle screw internal fixation (group A, n = 5; group B, n = 6; group C, n = 47); total joint replacement (group A, n = 3; group B, n = 4; group C, n = 8); interlocking intramedullary nail fixation (group A, n = 7; group B, n = 4; group C, n = 35) and other operations (group A, n = 3; group B, n = 3; group C, n = 28). For infections, 2 cases (4.88%) were observed in group A, 3 (5.26%) in group B and 26 (6.63%) in group C. The differences were statistically insignificant.

CONCLUSION

Reasonable perioperative adjuvant treatments, including use of antibiotic, nutritional supports, immunomodulators and anti-retroviral drugs, are offered to HIV infected patients undergoing orthopedic surgery. Their risks of postoperative wound infection may be controlled.

Long-term outcomes of ultrasonic scalpel treatment in giant cell tumor of long bones

Giant cell tumors (GCTs) are generally benign, locally aggressive lesions with the potential to metastasize and a tendency of local recurrence. The present study aimed to investigate the advantages and long-term outcomes of application of ultrasonic scalpel in the treatment of GCT of long bones. This study retrospectively analyzed 32 cases of GCT of long bones, including 24 males and eight females. The age range was from 8 to 34 years old (mean age, 23.5 years old). The 32 cases were randomly divided into an observation group (n=10) and a control group (n=22). Patients in the observation group received curettage by ultrasonic scalpel combined with local methotrexate gelfoam adjuvant treatment, and then the cavity was filled with allograft and/or homograft bone. Patients in the control group eceived curettage by local methotrexate gelfoam adjuvant treatment and bone grafting. No local recurrence or pulmonary metastases were observed among patients in the observation group, however, six patients in the control group exhibited recurrence following surgery, although none of the patients demonstrated distant metastasis (P<0.05). Additionally, all 10 patients showed good bone knitting and rehabilitation without deformity and functional issues. The segmental bone graft was perfectly incorporated without obvious immune rejection, collapse and fracture. Curettage by ultrasonic scalpel with local methotrexate gelfoam adjuvant treatment and filling the site by allograft and/or homograft bone showed satisfactory results.

[Surgical application of pedicle drill template navigation technology for complicated scoliosis]

OBJECTIVE

To evaluate the surgical efficacy and significance of pedicle drill template navigation technology for severe complicated scoliosis.

METHODS

Retrospective analyses were performed for 8 patients with complicated spinal scoliosis during 2010-2013. There were 5 males and 3 females with an average age of 18 (9-23) years. There were congenital (n = 5) and idiopathic (n = 3) scoliosis. A three-dimensional spinal computed tomography (CT) scan was performed. And the data were acquired and transferred via a DICOM network to a computer workstation. Three-dimensional reconstruction and rapid prototype were obtained. The navigation drill template was manufactured by rapid prototyping for clinical operation. Eight matched patients without navigation drill template were selected into a control group.

RESULTS

Eight patients were successfully operated as planned without any complication of spinal cord, nerve or blood vessel injury. And their post-operative outcomes were satisfactory. The intra-operative findings were the same as pre-operative impressions and measurements by digital spinal three dimensional reconstructions. The results of pedicle drill template navigation were excellent and the position of pedicle screws was accurate as evaluated by postoperative radiology and CT scan. The correction rate of scoliosis was 60%. Navigation drill template group: the average operating duration was 186 min, average volume of blood loss 460 ml and frequency of radiation by C arm 4 times.

CONTROL GROUP

the average operating duration was 225 min, average volume of blood loss 550 ml and frequency of radiation by C arm 30 times. The average operative duration between two groups was statistically significant (P < 0.01, t-test). And so were average volume of blood loss and frequency of radiation.

CONCLUSION

The rapid prototyping of pedicle drill template navigation technology is a new method for accurate intra-operative insertion of pedicle screws. It has a high surgical accuracy and safety for spinal scoliosis. The application of pedicle drill template navigation is simple without special experience requirements for operators. It can shorten the operative duration and reduce blood lose. The exposure of operators to radiation may be reduced or avoided during fluoroscopy.

Side effects and tolerability of post-exposure prophylaxis with zidovudine, lamivudine, and lopinavir/ritonavir: a comparative study with HIV/AIDS patients

BACKGROUND

In the era of highly active antiretroviral therapy (HAART), the use of antiretrovirals as post-exposure prophylaxis (PEP) was the most important strategy for preventing occupational exposure to blood or fluids containing human immunodeficiency virus (HIV). The objective of this study was to retrospectively evaluate the tolerability, safety, and side effects of a HAART regimen containing three antiretroviral drugs, consisting of zidovudine, lamivudine, and lopinavir/ritonavir, in healthcare personnel (HCP) who experienced occupational exposure to HIV.

METHODS

The tolerability, safety, and side effects in 26 HCPs who experienced PEP and in 27 HIV/AIDS patients with HAART regimen, AZT+3TC+Lpv/r, were evaluated between January 2010 and December 2012.

RESULTS

The most frequent clinical side effect was fatigue (in 23 cases, 88.5%), and gastroenterological symptoms were the second most common side effects in HCP with PEP. Liver dysfunction was found in 10 cases (38.5%), while drug rash was found in 18 cases (69.2%) after PEP. The prevalence of side effects in HCPs who experienced PEP was higher than that in HIV/AIDS patients P < 0.05. One nurse (3.8%) experienced severe gastrointestinal symptoms, which led to withdrawal of PEP. No HIV infection was found during 6-month follow-up period.

CONCLUSION

HCPs who received occupational PEP with triple-drug regimen, AZT+3TC+Lpv/r, experienced different side effects, and the tolerability and safety of PEP regimen were good in this cohort.