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Bone & Joint Research
Vol. 13, Issue 6 | Pages 279 - 293
7 Jun 2024
Morris JL Letson HL McEwen PC Dobson GP

Aims

Adenosine, lidocaine, and Mg2+ (ALM) therapy exerts differential immuno-inflammatory responses in males and females early after anterior cruciate ligament (ACL) reconstruction (ACLR). Our aim was to investigate sex-specific effects of ALM therapy on joint tissue repair and recovery 28 days after surgery.

Methods

Male (n = 21) and female (n = 21) adult Sprague-Dawley rats were randomly divided into ALM or Saline control treatment groups. Three days after ACL rupture, animals underwent ACLR. An ALM or saline intravenous infusion was commenced prior to skin incision, and continued for one hour. An intra-articular bolus of ALM or saline was also administered prior to skin closure. Animals were monitored to 28 days, and joint function, pain, inflammatory markers, histopathology, and tissue repair markers were assessed.


The Bone & Joint Journal
Vol. 106-B, Issue 6 | Pages 573 - 581
1 Jun 2024
van Houtert WFC Strijbos DO Bimmel R Krijnen WP Jager J van Meeteren NLU van der Sluis G

Aims

To investigate the impact of consecutive perioperative care transitions on in-hospital recovery of patients who had primary total knee arthroplasty (TKA) over an 11-year period.

Methods

This observational cohort study used electronic health record data from all patients undergoing preoperative screening for primary TKA at a Northern Netherlands hospital between 2009 and 2020. In this timeframe, three perioperative care transitions were divided into four periods: Baseline care (Joint Care, n = 171; May 2009 to August 2010), Function-tailored (n = 404; September 2010 to October 2013), Fast-track (n = 721; November 2013 to May 2018), and Prehabilitation (n = 601; June 2018 to December 2020). In-hospital recovery was measured using inpatient recovery of activities (IROA), length of stay (LOS), and discharge to preoperative living situation (PLS). Multivariable regression models were used to analyze the impact of each perioperative care transition on in-hospital recovery.


The Bone & Joint Journal
Vol. 105-B, Issue 12 | Pages 1271 - 1278
1 Dec 2023
Rehman Y Korsvold AM Lerdal A Aamodt A

Aims

This study compared patient-reported outcomes of three total knee arthroplasty (TKA) designs from one manufacturer: one cruciate-retaining (CR) design, and two cruciate-sacrificing designs, anterior-stabilized (AS) and posterior-stabilized (PS).

Methods

Patients scheduled for primary TKA were included in a single-centre, prospective, three-armed, blinded randomized trial (n = 216; 72 per group). After intraoperative confirmation of posterior cruciate ligament (PCL) integrity, patients were randomly allocated to receive a CR, AS, or PS design from the same TKA system. Insertion of an AS or PS design required PCL resection. The primary outcome was the mean score of all five subscales of the Knee injury and Osteoarthritis Outcome Score (KOOS) at two-year follow-up. Secondary outcomes included all KOOS subscales, Oxford Knee Score, EuroQol five-dimension health questionnaire, EuroQol visual analogue scale, range of motion (ROM), and willingness to undergo the operation again. Patient satisfaction was also assessed.


Bone & Joint 360
Vol. 11, Issue 6 | Pages 6 - 11
1 Dec 2022
Roberton A Stocker M Phillips J


The Bone & Joint Journal
Vol. 104-B, Issue 11 | Pages 1202 - 1208
1 Nov 2022
Klasan A Rice DA Kluger MT Borotkanics R McNair PJ Lewis GN Young SW

Aims

Despite new technologies for total knee arthroplasty (TKA), approximately 20% of patients are dissatisfied. A major reason for dissatisfaction and revision surgery after TKA is persistent pain. The radiological grade of osteoarthritis (OA) preoperatively has been investigated as a predictor of the outcome after TKA, with conflicting results. The aim of this study was to determine if there is a difference in the intensity of pain 12 months after TKA in relation to the preoperative radiological grade of OA alone, and the combination of the intensity of preoperative pain and radiological grade of OA.

Methods

The preoperative data of 300 patients who underwent primary TKA were collected, including clinical information (age, sex, preoperative pain), psychological variables (depression, anxiety, pain catastrophizing, anticipated pain), and quantitative sensory testing (temporal summation, pressure pain thresholds, conditioned pain modulation). The preoperative radiological severity of OA was graded according to the Kellgren-Lawrence (KL) classification. Persistent pain in the knee was recorded 12 months postoperatively. Generalized linear models explored differences in postoperative pain according to the KL grade, and combined preoperative pain and KL grade. Relative risk models explored which preoperative variables were associated with the high preoperative pain/low KL grade group.


The Bone & Joint Journal
Vol. 102-B, Issue 9 | Pages 1158 - 1166
14 Sep 2020
Kaptein BL den Hollander P Thomassen B Fiocco M Nelissen RGHH

Aims

The primary objective of this study was to compare migration of the cemented ATTUNE fixed bearing cruciate retaining tibial component with the cemented Press-Fit Condylar (PFC)-sigma fixed bearing cruciate retaining tibial component. The secondary objectives included comparing clinical and radiological outcomes and Patient Reported Outcome Measures (PROMs).

Methods

A single blinded randomized, non-inferiority study was conducted including 74 patients. Radiostereometry examinations were made after weight bearing, but before hospital discharge, and at three, six, 12, and 24 months postoperatively. PROMS were collected preoperatively and at three, six, 12, and 24 months postoperatively. Radiographs for measuring radiolucencies were collected at two weeks and two years postoperatively.


The Bone & Joint Journal
Vol. 102-B, Issue 1 | Pages 82 - 89
1 Jan 2020
Coenders MJ Mathijssen NMC Vehmeijer SBW

Aims

The aim of this study was to report our experience at 3.5 years with outpatient total hip arthroplasty (THA).

Methods

In this prospective cohort study, we included all patients who were planned to receive primary THA through the anterior approach between 1 April 2014 and 1 October 2017. Patient-related data and surgical information were recorded. Patient reported outcome measures (PROMs) related to the hip and an anchor question were taken preoperatively, at six weeks, three months, and one year after surgery. All complications, readmissions, and reoperations were registered.


The Bone & Joint Journal
Vol. 99-B, Issue 2 | Pages 211 - 217
1 Feb 2017
Sluis GVD Goldbohm RA Elings JE Sanden MWND Akkermans RP Bimmel R Hoogeboom TJ Meeteren NLV

Aims

To investigate whether pre-operative functional mobility is a determinant of delayed inpatient recovery of activities (IRoA) after total knee arthroplasty (TKA) in three periods that coincided with changes in the clinical pathway.

Patients and Methods

All patients (n = 682, 73% women, mean age 70 years, standard deviation 9) scheduled for TKA between 2009 and 2015 were pre-operatively screened for functional mobility by the Timed-up-and-Go test (TUG) and De Morton mobility index (DEMMI). The cut-off point for delayed IRoA was set on the day that 70% of the patients were recovered, according to the Modified Iowa Levels of Assistance Scale (mILAS) (a 5-item activity scale). In a multivariable logistic regression analysis, we added either the TUG or the DEMMI to a reference model including established determinants.


Bone & Joint 360
Vol. 5, Issue 6 | Pages 18 - 21
1 Dec 2016


The Bone & Joint Journal
Vol. 98-B, Issue 9 | Pages 1189 - 1196
1 Sep 2016
McDonald DA Deakin AH Ellis BM Robb Y Howe TE Kinninmonth AWG Scott NB

Aims

This non-blinded randomised controlled trial compared the effect of patient-controlled epidural analgesia (PCEA) versus local infiltration analgesia (LIA) within an established enhanced recovery programme on the attainment of discharge criteria and recovery one year after total knee arthroplasty (TKA). The hypothesis was that LIA would increase the proportion of patients discharged from rehabilitation by the fourth post-operative day but would not affect outcomes at one year.

Patients and Methods

A total of 242 patients were randomised; 20 were excluded due to failure of spinal anaesthesia leaving 109 patients in the PCEA group and 113 in the LIA group. Patients were reviewed at six weeks and one year post-operatively.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_8 | Pages 113 - 113
1 May 2016
Kodama T Ogawa Y Shiromoto Y Nakayama M Tsuji O Kanagawa H
Full Access

Objective. We have been using continuous epidural block and local infiltration cocktail for the pain management after TKA since 2005, and good pain control has been acquired with this method. During the past few years we have changed our protocol of postoperative pain management. We have stopped the administration of Loxoprofen starting next morning of the operation, instead Celecoxib was given starting before the operation. We have started mixing steroid to the intraoperative local infiltration cocktail to reduce acute pain as well as swelling. We also have stopped using suction drain, and delayed the timing of CPM start from day 2 to day 3. Methods. This is case control study, and 78 cases of unilateral TKA were investigated for the study. All cases were anesthetized with continuous epidural block with intravenous dosage of phentanyl and propofol. Compositions of local infiltration cocktail are 40ml 0.75% Ropivacaine, 60ml saline, 0.5ml epinephrin. Group1 (n=40) used this cocktail independently, and Group2 (n=38) used this cocktail with addition of 40mg of triamcinolone(Fig.1). Local infiltration cocktail was used during operation, which was injected to the whole joint capsule. In group1 Loxoprofen was given starting next morning, in group 2 Celecoxib was given starting at 7am on the day of operation. In group1 suction tube was left for 2 days, where as in group2 no suction tube was used postoperatively, and continuous epidural block catheter was removed on postoperative day 2 in both groups. CPM was started at postoperative day 2 in group 1 and postoperative day 3 in group 2. Numerical Rating Scale (NRS) was used to analyze the pain. Circumferences of knee and thigh, as well as ROM of knee joint were measured periodically. Results. Preoperative demographics showed no statistical difference between two groups(Fig. 2). Group 2 showed significantly less pain at 6am next morning postoperatively (Fig.3&4). Group 2 showed significantly lower NRS on motion at postoperative day1, 3, 5 and 7 (Fig.5). Group 2 also showed significantly less swellings of knees and thighs at postoperative day 7 (Fig.6). The ROM of the knee joints at postoperative day 7, 14 and 21 were better in group2(Fig.7). Discussions. Our new method of multimodal pain control is effective. It significantly decreased the pain at 6am next morning postoperatively, which is due to preoperative administration of Celecoxib. The pain on motion during 1 st week was significantly decreased which is probably due to the addition of steroid to the cocktail. Suction drain was not needed, if you use steroid in the cocktail and delay the timing to start CPM. The swelling was significantly reduced by steroid injection and delay in ROM exercise. As a result better ROM at postoperative day 7,14 and 21 were obtained. To view tables/figures, please contact authors directly


Total knee arthroplasty is associated with early postoperative pain. Appropriate pain management is important to facilitate postoperative rehabilitation and positive functional outcomes. This study compares outcomes in TKA with three techniques; local infiltration analgesia, single shot femoral nerve block and intrathecal morphine. Methods. Forty-five patients undergoing elective primary Total Knee Arthroplasty (TKA) with were randomized into one of three groups in a double blind proof of concept study. Study arm 1 received local infiltration analgesia ropivacaine intra-operatively, an elastomeric device of ropivacaine for 24 hours post-op. Study arm 2 received a femoral nerve block of ropivacaine with placebo local infiltration analgesia and placebo intrathecal morphine. Study arm 3 received intrathecal morphine, placebo femoral nerve block and placebo local infiltration analgesia. All patients received standardized pre-operative, intraoperative and Post-operative analgesic medication. Participants were mobilized at 4 hrs, 24hrs and 48 hrs post operation. Range of Motion, Visual Analogue Scale (VAS) pain intensity scores and two minute walk test and Timed Up and Go test were performed. Postoperative use of analgesic drugs was recorded. Knee Society Score (KSS), Oxford Knee Score and Knee Injury and Osteoarthritis Outcome Score (KOOS) were completed at preoperative and 6 weeks post op. Results. Preliminary results of 32 participants convey the positive outcomes after total knee replacement demonstrated by the improvement in Oxford Knee Score and Knee Osteoarthritis Outcome score. There are marked improvements in the 2-minute walk tests at the six week time-point. At day one post-operative only 5 participants were unable to walk. Patient-controlled analgesia was used on 5 occasions on day one, 2 of which continued on day two. Sedation scores were recorded in six participants on day one and 2 on day two. Nausea was reported in 5 cases on day one and 9 on day two. Urinary catheter was needed in 5 cases on day one. Importantly the study remains blinded, therefore an analysis of the three study arms is not available and is therefore currently difficult to report on the statistical significance. There will be further assessment of the efficacy of analgesia using VAS pain scores, analgesia consumption and side effects collected preoperatively, 0–24hrs and 24–48 hours postoperatively between the three randomized groups. The assessment of functional outcomes will be measured between the three groups by comparing the ability to mobilize the first 4 hrs after surgery, maximal flexion and extension, two minute walk test and timed up-and-go preoperatively, on postoperative day 1 and 2 and 6 weeks. Conclusion. Results from the study will provide important information for the management of TKA in the hospital setting. We anticipate completion of all 45 surgeries in the next 2 months. The Blinding codes with be broken thereafter and full data analysis performed. The comparison of the three commonly used analgesic techniques and mobilization outcomes will allow enhanced management of patient's post-operative pain with earlier discharge from hospital an lower complication rates


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_8 | Pages 24 - 24
1 May 2016
Hamada D Wada K Goto T Tsutsui T Kato S Sairyo K
Full Access

Background. Continuous epidural anesthesia or femoral nerve block has decreased postoperative pain after total knee arthroplasty to some extent. Although the established efficacy of these pain relief method, some adverse events such as hematoma or muscle weakness are still problematic. Intraoperative local infiltration of analgesia (LIA) has accepted as a promising pain control method after total knee arthroplasty. The safety and efficacy of LIA has been reported, although there are still limited evidence about the effect of LIA on quadriceps function and recovery of range of motion in early post-operative phase. The purpose of this study is to compare the quadriceps function and range of motion after TKA between the LIA with continuous epidural anesthesia and continuous epidural anesthesia alone. Methods. Thirty patients with knee osteoarthritis who underwent primary TKA were included in this study. Patients who took anticoagulants were treated continuous epidural anesthesia alone (n=11) and the other patients were treated with LIA with continuous epidural anesthesia (n=19). A single surgeon at our department performed all surgeries. Surgical procedure and rehabilitation process was identical between two groups. Before the implantation, analgesic drugs consisting of 20 ml of 0.75 % ropivacaine and 6.6 mg of dexamethasone were injected into the peri-articular tissues. In each group, fentanyl continuous epidural patient-controlled analgesia (PCA) was also used during 48-h post-operative period. Knee flexion and extension angle were evaluated before surgery, post-op day 3, 7, 10 and 14. The quadriceps function was evaluated by quadriceps peak torque at 30° and 60° flexion using VIODEX. The peak torque was recorded preoperatively, day 14 and 3 month after surgery. The difference between two groups was analyzed by Mann Whitney U-test using Prism 6, a statistical software. Results. LIA group showed better postoperative flexion angle until day 7 (Fig. 1). Then the discrepancy became smaller and came to the same degree at day14. The peak torque at 30° and 60° flex is higher in LIA group compared to epidural anesthesia alone. The LIA group showed less peak torque decrease at 2 weeks after surgery than epidural anesthesia alone group (Fig. 2, 3). No adverse events such as were observed in each group. Discussion. This paper demonstrated that LIA in addition to the continuous epidural anesthesia after TKA provides better quadriceps function and early recovery in knee range of motion. In this study we also used continuous epidural anesthesia, thus this study can not evaluate the stand alone LIA effects on quadriceps function and range of motion recovery. Furthermore the patients were not randomly assigned in this study, this might be another limitation of this study. In conclusion, LIA provide better quadriceps function and early recovery of range of motion in addition to the pain relief. To view tables/figures, please contact authors directly


Background. Total knee arthroplasty is associated with early postoperative pain. Appropriate pain management is important to facilitate postoperative rehabilitation and positive functional outcomes. This study compares outcomes in TKA with three techniques; local infiltration analgesia, single shot femoral nerve block and intrathecal morphine. Methods. Forty-five patients undergoing elective primary Total Knee Arthroplasty (TKA) with were randomized into one of three groups in a double blind proof of concept study. Study arm 1 received local infiltration analgesia ropivacaine intra-operatively, an elastomeric device of ropivacaine for 24 hours post-op. Study arm 2 received a femoral nerve block of ropivacaine with placebo local infiltration analgesia and placebo intrathecal morphine. Study arm 3 received intrathecal morphine, placebo femoral nerve block and placebo local infiltration analgesia. All patients received standardized pre-operative, intraoperative and Post-operative analgesic medication. Participants were mobilized at 4 hrs, 24hrs and 48 hrs post operation. Range of Motion, Visual Analogue Scale (VAS) pain intensity scores and two minute walk test and Timed Up and Go test were performed. Postoperative use of analgesic drugs was recorded. Knee Society Score (KSS), Oxford Knee Score and Knee Injury and Osteoarthritis Outcome Score (KOOS) were completed at preoperative and 6 weeks post op. Results. Assessment of the efficacy of analgesia will be conducted using VAS pain scores collected preoperatively, 0–24hrs and 24–48 hours postoperatively between the three randomized groups. Frequency of use of other analgesia and need for PCA will be compared between groups at 0–24hr and 24–48hrs post operatively. The assessment of functional outcomes will be measured between the three groups by comparing the ability to mobilize the first 4 hrs after surgery, maximal flexion and extension, two minute walk test and timed up-and-go preoperatively, on postoperative day 1 and 2 and 6 weeks. Patient reported outcome measures KSS, Oxford Knee score and KOOS will be compared for the three study arms. Conclusion. Results from the study will provide important information for the management of TKA in the hospital setting. The comparison of the three commonly used analgesic techniques and mobilization outcomes are pertinent for physiotherapy and rehabilitation management, anaesthetic specialists, nursing staff, orthopaedic surgeons and patients


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_15 | Pages 21 - 21
1 Dec 2015
Nijsse B Kadic L De Waal Malefijt M Schreurs B
Full Access

Local infiltration analgesia (LIA) is promoted as an effective treatment modality for pain control after total knee arthroplasty (TKA) (1). A mixture of drugs is used to provide a multimodal analgesic effect. Previous studies reported that the use of these drugs is safe. After we carefully implemented a LIA study protocol in our practice, concerns raised about patient safety with probably higher infection rates. This forced us to perform an interim analysis after the first 58 cases. 58 patients underwent a unilateral TKA with a standardised LIA protocol (2), which consisted of a mixture of ropivacaine, epinephrine, and triamcinolone acetonide. Complications, knee function and patient satisfaction scores were prospectively recorded during regular outpatient control. Four patients (6.9%) presented with signs of periprosthetic joint infection (PJI) within two months after surgery. Baseline characteristics were similar between the infected and non infected group. All infections were treated with debridement and retention, and antimicrobial treatment was started. One patient who suffered an infection died during followup. At two years followup all implants could be retained. Knee function and KSS score were acceptable for the patients who suffered PJI. There is no consensus on the combination of drugs used for LIA. The application of corticosteroids in LIA is reported to be safe (3), but arguable results about the injection of local corticosteroids around knee arthroplasty surgery in the past have raised suspicion in literature (4). Combined with our unacceptable high rate of PJI, we believe that the current body of evidence, with small heterogeneous series, does not support the safe use of corticosteroids in LIA


The Bone & Joint Journal
Vol. 97-B, Issue 10_Supple_A | Pages 40 - 44
1 Oct 2015
Thienpont E Lavand'homme P Kehlet H

Total knee arthroplasty (TKA) is a major orthopaedic intervention. The length of a patient's stay has been progressively reduced with the introduction of enhanced recovery protocols: day-case surgery has become the ultimate challenge.

This narrative review shows the potential limitations of day-case TKA. These constraints may be social, linked to patient’s comorbidities, or due to surgery-related adverse events (e.g. pain, post-operative nausea and vomiting, etc.).

Using patient stratification, tailored surgical techniques and multimodal opioid-sparing analgesia, day-case TKA might be achievable in a limited group of patients. The younger, male patient without comorbidities and with an excellent social network around him might be a candidate.

Demographic changes, effective recovery programmes and less invasive surgical techniques such as unicondylar knee arthroplasty, may increase the size of the group of potential day-case patients.

The cost reduction achieved by day-case TKA needs to be balanced against any increase in morbidity and mortality and the cost of advanced follow-up at a distance with new technology. These factors need to be evaluated before adopting this ultimate ‘fast-track’ approach.

Cite this article: Bone Joint J 2015;97-B(10 Suppl A):40–4.


The Bone & Joint Journal
Vol. 95-B, Issue 12 | Pages 1587 - 1594
1 Dec 2013
Ibrahim MS Twaij H Giebaly DE Nizam I Haddad FS

The outcome after total hip replacement has improved with the development of surgical techniques, better pain management and the introduction of enhanced recovery pathways. These pathways require a multidisciplinary team to manage pre-operative education, multimodal pain control and accelerated rehabilitation. The current economic climate and restricted budgets favour brief hospitalisation while minimising costs. This has put considerable pressure on hospitals to combine excellent results, early functional recovery and shorter admissions. In this review we present an evidence-based summary of some common interventions and methods, including pre-operative patient education, pre-emptive analgesia, local infiltration analgesia, pre-operative nutrition, the use of pulsed electromagnetic fields, peri-operative rehabilitation, wound dressings, different surgical techniques, minimally invasive surgery and fast-track joint replacement units. Cite this article: Bone Joint J 2013;95-B:1587–94


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_30 | Pages 28 - 28
1 Aug 2013
Quinn M Deakin A McDonald D Cunningham I Payne A Picard F
Full Access

Local infiltration analgesia is a relatively novel technique developed for effective pain control following total knee replacement, reducing requirements of epidural or parenteral post-operative analgesia. The study aimed to investigate the anatomical spread of Local Infiltration Analgesia (LIA) used intra-operatively in total knee arthroplasty (TKA) and identify the nerve structures reached by the injected fluid. Six fresh-frozen cadaveric lower limbs were injected with 180ml of a solution of latex and India ink to enable visualisation. Injections were done according to our standardised LIA technique. Wounds were closed and limbs were placed flat in a freezer at −20°C for two weeks. Limbs were then either sliced or dissected to identify solution locations. Injected solution was found from the proximal thigh to the middle of the lower leg. The main areas of concentration were the popliteal fossa, the anterior aspect of the femur and the subcutaneous tissue of the anterior aspect of the knee. There was less solution in the lower popliteal fossa. The solution was found to reach the majority of the terminal branches of the tibial, fibular and obturator nerves. Overall, there was good infiltration of nerves supplying the knee. The lack of infiltration into the lower popliteal fossa suggests more fluid or a different injection point could be used. The solution that travelled distally to the extensor muscles of the lower leg probably has no beneficial analgesic effect for a TKA patient. This LIA technique reached most nerves that innervate the knee joint which supports the positive clinical results from this LIA technique. However, there may be scope to optimise the injection sites


The Bone & Joint Journal
Vol. 95-B, Issue 5 | Pages 629 - 635
1 May 2013
YaDeau JT Goytizolo EA Padgett DE Liu SS Mayman DJ Ranawat AS Rade MC Westrich GH

In a randomised controlled pragmatic trial we investigated whether local infiltration analgesia would result in earlier readiness for discharge from hospital after total knee replacement (TKR) than patient-controlled epidural analgesia (PCEA) plus femoral nerve block. A total of 45 patients with a mean age of 65 years (49 to 81) received a local infiltration with a peri-articular injection of bupivacaine, morphine and methylprednisolone, as well as adjuvant analgesics. In 45 PCEA+femoral nerve blockade patients with a mean age of 67 years (50 to 84), analgesia included a bupivacaine nerve block, bupivacaine/hydromorphone PCEA, and adjuvant analgesics. The mean time until ready for discharge was 3.2 days (1 to 14) in the local infiltration group and 3.2 days (1.8 to 7.0) in the PCEA+femoral nerve blockade group. The mean pain scores for patients receiving local infiltration were higher when walking (p = 0.0084), but there were no statistically significant differences at rest. The mean opioid consumption was higher in those receiving local infiltration. The choice between these two analgesic pathways should not be made on the basis of time to discharge after surgery. Most secondary outcomes were similar, but PCEA+femoral nerve blockade patients had lower pain scores when walking and during continuous passive movement. If PCEA+femoral nerve blockade is not readily available, local infiltration provides similar length of stay and similar pain scores at rest following TKR. . Cite this article: Bone Joint J 2013;95-B:629–35


Bone & Joint 360
Vol. 1, Issue 5 | Pages 10 - 12
1 Oct 2012

The October 2012 Hip & Pelvis Roundup. 360. looks at: diagnosing the infected hip replacement; whether tranexamic acid has a low complication rate; the relationship between poor cementing technique and early failure of resurfacing; debridement and retention for the infected replacement; triple-tapered stems and bone mineral density; how early discharge can be bad for your sleep; an updated QFracture algorithm to predict the risk of an osteoporotic fracture; and local infiltration analgesia and total hip replacement