Lower anxiety level to perform movements after revision anterior cruciate ligament reconstruction with lateral extra-articular tenodesis compared to without lateral extra-articular tenodesis

PURPOSE

To evaluate the anxiety level to perform movements in patients after revision anterior cruciate ligament reconstruction (ACLR) combined with lateral extra-articular tenodesis (LET) compared to patients after revision ACLR without LET.

METHODS

Ninety patients who underwent revision ACLR with ipsilateral bone-patellar tendon-bone autograft and with a minimum of 12 months follow-up were included in this study. Patients were divided into two groups: patients who received revision ACLR in combination with LET (revision ACLR_LET group; mean follow-up: 29.4 months, range: 12-80 months), and patients who received revision ACLR without LET (revision ACLR group; mean follow-up: 61.1 months, range: 22-192 months). All patients filled in a questionnaire about anxiety level related to physical activity and sports, the Knee injury and Osteoarthritis Outcome Score (KOOS), the International Knee Documentation Committee subjective form (IKDCsubjective), and the Tegner Activity Score.

RESULTS

Patients in the revision ACLR_LET group had a significantly lower anxiety level to perform movements than patients in the revision ACLR group (p < 0.05). No significant differences were found in KOOS, IKDCsubjective, and Tegner Activity Scores.

CONCLUSIONS

Patients who received LET in addition to revision ACLR have a lower anxiety level to perform movements than patients with revision ACLR alone, despite non-different subjective functional outcomes.

STUDY DESIGN

Retrospective cohort study, Level of evidence: III.

12-Year clinical and radiological results of a double-blind randomized controlled trial comparing posterior cruciate-retaining versus posterior-stabilized total knee arthroplasty

BACKGROUND

A subject of ongoing debate among orthopedic surgeons is the importance of preserving the posterior cruciate ligament in total knee arthroplasty (TKA), but long-term survival studies are scarce. The aim of this study was to compare long-term survival rates, and clinical and radiological follow up of a double-blind randomized controlled trial comparing posterior cruciate-retaining (PCR) versus posterior-stabilizing (PS) implant design of an AGC TKA.

METHODS

A total of 114 patients were included in the survival analysis (PCR n = 61; PS n = 53). Forty-five patients (PCR n = 25; PS n = 20) participated in the long-term follow up using patient-reported outcome measures (Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Short-Form Health Survey (SF-36) and Kujala score (measuring anterior knee pain)). Thirty-one patients were assessed with a physical test (Knee Society Score (KSS)) and radiographs.

RESULTS

Overall survival rate was 95.6% (PCR 98.4% vs. PS 92.5%), with five patients having a major revision (PCR n = 1 vs. PS n = 4, respectively). Satisfying outcome scores for both groups were described at on average 12-year follow up with no significant differences in KSS knee and function scores, WOMAC, SF-36, or Kujala scores between groups. Radiographically, there were no findings of femoral or tibial loosening or polyethylene wear in either group.

CONCLUSIONS

Good long-term survival rates were described for the PCR and the PS design of an AGC TKA. There were no significant differences in clinical and radiological outcomes between a PCR and a PS design 12 years postoperatively.

The role of computer-assisted cryotherapy in the postoperative treatment after total knee arthroplasty: positive effects on pain and opioid consumption

PURPOSE

The aim of this study was to investigate whether computer-assisted cryotherapy is effective in reducing postoperative pain and analgesics consumption, next to improving functional outcome and patient satisfaction after total knee arthroplasty (TKA). The hypothesis is that computer-assisted cryotherapy has positive effects on postoperative pain after TKA.

METHODS

A single-centre non-blinded randomised controlled trial was designed to study the early (first postoperative week) and late (2 and 6 weeks postoperatively) additive effect of computer-assisted cooling after TKA. Participants scheduled for a TKA were randomly allocated to a cold (cryotherapy) C-group or a regular (control) R-group. Next to usual postoperative care for both groups, the C-group received computer-assisted cryotherapy during the first seven postoperative days. Primary outcome was pain, monitored with the numerical rating scale for pain and use of opioid escape medication. Secondary outcomes were function and swelling, monitored by active range of motion, timed up and go test and circumference measurements; patient-reported outcome measurements (KOOS and WORQ questionnaires); and patient satisfaction, monitored by the numerical rating scale for satisfaction.

RESULTS

102 patients participated in this study, both groups contained 51 patients. On most days during the first week, patients in the C-group scored significantly lower NRS pain scores and registered significantly less use of opioid escape medication. In a sub-analysis of 57 patients using the same standard pain protocol, patients in the C-group (n = 28) used less oxycodone during the first postoperative week. There were no significant differences between both groups in active range of motion, timed up and go, or circumference measurements. For the WORQ questionnaire, there was a significant difference between the two groups 6 weeks postoperatively in favour of the C-group. This could be however due to a reduced validity of this questionnaire shortly after TKA. The satisfaction score was not significantly different between both groups.

CONCLUSION

Computer-assisted cryotherapy following TKA can be beneficial during the first postoperative week in terms of pain reduction and diminished opioid consumption. No clear differences in knee function or swelling were seen.

LEVEL OF EVIDENCE

Therapeutic study with level of evidence I.

The importance of continuous remnant preservation in anterior cruciate ligament reconstruction

PURPOSE

Selective anteromedial or posterolateral bundle reconstruction is recognized as a treatment modality in partial anterior cruciate ligament (ACL) reconstruction (ACLR) with a biomechanically sufficient ACL remnant. However, there is paucity in literature investigating clinical outcomes of standard ACLR with preservation of residual continuous but biomechanically insufficient ACL tissue. The aim of this study was to investigate the influence of preservation of residual continuous but biomechanical insufficient ACL tissue in standard ACLR on complication and repeat surgery rate, and patient reported and clinical outcome.

METHODS

The retrospective cohort comprised 134 patients (age 23 ± 7 years; Tegner 6 ± 3) with an isolated acute ACL tear. In 67 patients, residual continuous but biomechanically insufficient ACL tissue was present and preserved based on visual inspection, probing of the ACL tissue and Lachman test under arthroscopic view (standard reconstruction with tissue preservation; SRTP). These patients were matched to 67 patients that underwent ACLR where no residual ACL tissue could be preserved (standard reconstruction; SR) based on gender, age and chondral and/or meniscal status. Clinical failure (recurrent instability, pathological ACL graft laxity and/or ACL graft discontinuity), other complication and repeat-surgery rate within index surgery and 1-year and within index surgery and 2-year follow-up, and patient reported and clinical outcomes at 1-year and at 2-year follow-up were compared.

RESULTS

A statistically significant lower clinical failure rate within index surgery and 1-year (SRTP, 3%; SR, 13%; P = 0.028) and within index surgery and 2-year follow-up (SRTP, 3%; SR, 23%; P = 0.001), and revision ACL surgery rate within index surgery and 1-year (SRTP, 2%; ST, 10%; P = 0.029) and within index surgery and 2-year follow-up (SRTP, 2%; SR, 18%; P = 0.001) was found in the SRTP group. No statistically significant differences were found for other investigated outcomes in patients that were without clinical failure.

CONCLUSION

This study shows that in ACLR surgery, preservation of residual continuous but biomechanical insufficient ACL tissue might lead to lower clinical failure rate and ACL revision surgery rate within index surgery and 1-year, and within index surgery and 2-year follow-up compared to standard ACLR where no residual continuous ACL tissue could be preserved.

LEVEL OF EVIDENCE

III.

Study protocol ROTATE-trial: anterior cruciate ligament rupture, the influence of a treatment algorithm and shared decision making on clinical outcome– a cluster randomized controlled trial

Background

Anterior cruciate ligament (ACL) rupture is a very common knee injury in the sport active population. There is much debate on which treatment (operative or non-operative) is best for the individual patient. In order to give a more personalized recommendation we aim to evaluate the effectiveness and cost-effectiveness of a treatment algorithm for patients with a complete primary ACL rupture.

Methods

The ROTATE-trial is a multicenter, open-labeled cluster randomized controlled trial with superiority design. Randomization will take place on hospital level (n = 10). Patients must meet all the following criteria: aged 18 year or older, with a complete primary ACL rupture (confirmed by MRI and physical examination) and maximum of 6 weeks of non-operative treatment. Exclusion criteria consists of multi ligament trauma indicated for surgical intervention, presence of another disorder that affects the activity level of the lower limb, pregnancy, and insufficient command of the Dutch language. The intervention to be investigated will be an adjusted treatment decision strategy, including an advice from our treatment algorithm. Patient reported outcomes will be conducted at baseline, 3, 6, 12 and 24 months. Physical examination of the knee at baseline, 12 and 24 months. Primary outcome will be function of the knee measured by the International Knee Documentation Committee (IKDC) questionnaire. Secondary outcomes are, among others, the Tegner activity score, the Knee injury and Osteoarthritis Outcome Score (KOOS) and the 9-item Shared Decision Making Questionnaire (SDM-Q-9). Healthcare use, productivity and satisfaction with ((non-)operative) care are also measured by means of questionnaires. In total 230 patients will be included, resulting in 23 patients per hospital.

Discussion

The ROTATE study aims to evaluate the effectiveness and cost-effectiveness of a treatment algorithm for patients with a complete primary ACL rupture compared to current used treatment strategy. Using a treatment algorithm might give the much-wanted personalized treatment recommendation.

Trial registration

This study is approved by the Medical Research Ethics Committee of Erasmus Medical Center in Rotterdam and prospectively registered at the Dutch Trial Registry on May 13th, 2020. Registration number: NL8637.

Anterolateral proximal tibial opening wedge osteotomy for biplanar correction in genu valgum recurvatum using patient specific instrumentation (PSI). A technical note

BACKGROUND

Biplanar anterolateral proximal tibial opening wedge osteotomy has been described as successful for patients with combined recurvatum and valgus alignment. As it is a correction in two planes, it is a technically demanding procedure. We report the use of a novel technique with patient specific instrumentation (PSI) guides for different steps, aiming to reduce the complexity of this procedure.

METHODS

One patient was treated for genu valgum recurvatum. A virtual surgical plan was made. A two-step PSI approach was used, consisting of an osteotomy guide and a repositioning guide and a custom trial wedges.

RESULTS

Follow-up showed full function and improved VAS and KOOS scores. A neutral alignment was achieved. There was 2.76 degrees less varus compared to pre-operative planning, 1.24 degrees of excess slope and a rotational difference of 0.10 degrees. Saw plane accuracy was within 1 mm.

CONCLUSIONS

PSI is a recent technical addition to HTOs as a modality to improve accuracy and reduce surgical complexity. Pre-planning and PSI use in an anterolateral opening wedge PTO allowed for an accurate and reproducible biplanar correction in genu valgum recurvatum. Accuracy was comparable to PSI use in lateral open wedge high tibial osteotomies.

Recovery Courses of Patients Who Return to Work by 3, 6 or 12 Months After Total Knee Arthroplasty

Purpose This study compared the preoperative levels and postoperative recovery courses of physical and mental impairments, activity limitations and participation restrictions of working-age patients who return to work (RTW) by 3, 6 or 12 months after total knee arthroplasty (TKA). Methods A prospective survey study including TKA patients (aged < 65) (n = 146) who returned to work (RdTW) in the first postoperative year. Three groups were compared: those who returned by 3 (n = 35), 6 (n = 40) or 12 (n = 29) months. Surveys were completed preoperatively and at 6 weeks and 3, 6 and 12 months postoperatively. Outcomes represented domains of the International Classification of Functioning, i.e. physical impairments (pain, stiffness, vitality), mental impairments (mental health and depressive symptoms), activity limitations (physical functioning) and participation restrictions (social and work functioning). Results Preoperative knee-specific pain and physical functioning levels were better among patients who RdTW by 3 months, compared to those who returned by 12 months. Patients who RdTW by 3 months experienced significantly better recovery from physical impairments than those who returned by 6 months (on general pain) or 12 months (on general and knee-specific pain and on stiffness). Patients returning by 3 months experienced significantly better recovery from activity limitations (on knee-specific physical functioning). Conclusions To optimize return to work outcome after TKA surgery, the focus should lie on physical impairments (general and knee-specific pain, stiffness) and activity limitations (knee-specific physical functioning) during recovery.

Is a high tibial osteotomy (HTO) superior to non-surgical treatment in patients with varus malaligned medial knee osteoarthritis (OA)? A propensity matched study using 2 randomized controlled trial (RCT) datasets

OBJECTIVE

No randomized controlled trial (RCT) has compared the high tibial osteotomy (HTO) with non-surgical treatment in patients with medial knee osteoarthritis (OA) and varus malalignment. The aim was to compare the effectiveness of an unloader brace treatment or a usual care program to the HTO regarding pain severity and knee function.

DESIGN

Surgical treatment (HTO) to two non-surgical options was compared by combining the data of two RCTs. One RCT (n = 117) compared an unloader brace to usual care treatment; the other RCT (n = 92) compared closing to opening wedge HTO. One-to-many propensity score matching was used to equalize patient characteristics. We compared clinical outcome at 1 year follow-up (VAS pain (0-10) and knee function (HSS, 0-100)) with mixed model analysis.

RESULTS

Propensity score matching resulted in a comparison of 30 brace patient with 83 HTO patients, and of 28 usual care patients with 71 HTO patients. Pain at 1 year after HTO (VAS 3.8) was lower than after valgus bracing (VAS 5.0) with a mean difference of -1.1 (95% CI -2.2; -0.1). Function showed a nonsignificant mean difference of 2.1 [95% CI -3.1; 7.3]. Comparing HTO to usual care a difference was seen in pain (-1.7 [95% CI -2.8; -0.6]) and function (6.6 [95% CI 0.2; 13.1]), in favor of the HTO.

CONCLUSIONS

Our data suggest that HTO was more effective in pain reduction compared to both non-surgical treatments. Function improved only when HTO was compared to usual care treatment. These small differences question the benefits of surgical treatment over the brace treatment.

Progression of medial compartmental osteoarthritis 2-8 years after lateral closing-wedge high tibial osteotomy

PURPOSE

The primary purpose of this study is to investigate the progression of medial osteoarthritis (OA) following lateral closing-wedge high tibial osteotomy (HTO). Secondary outcomes included functional and pain scores.

METHODS

This prospective cohort study analysed 298 patients treated with lateral closing-wedge HTO surgery for medial compartmental OA. OA progression was measured by comparing the minimum joint space width (mJSW) and Kellgren-Lawrence (KL) score on radiographs preoperatively and postoperatively. The WOMAC score and NRS score for pain were obtained preoperatively and postoperatively to assess secondary outcomes. Failure was defined as revision surgery; survival was estimated.

RESULTS

Mean follow-up was 5.2 ± 1.8 years (range 2-8.5). Mean preoperative mJSW was 3.4 ± 1.6 mm, which changed nonsignificantly (p = 0.51) to 3.4 ± 1.7 mm postoperatively. Mean annual joint space narrowing was 0.02 ± 0.34 mm/year. Progression to 1 KL grade or more was seen in 132 (44 %) patients, and annual risk of KL progression was 8.6 %. No KL progression was seen in 56 % of patients. Mean NRS decreased from 7.3 ± 1.5 to 3.5 ± 2.5 (p < 0.001). WOMAC scores decreased from 48.0 ± 17.2 to 23.6 ± 19.7 (p < 0.001). Failure was seen in 21 patients.

CONCLUSION

Compared to demographic data in the literature, valgus high tibial osteotomy seems to reduce the progression of OA, reduces pain and improves knee function in patients with medial compartment OA and a varus alignment.

LEVEL OF EVIDENCE

III.

[AbstractA woman with knee pain after a fall in childhood]

A 32-year-old woman presented with pain in her left knee ever since she had fallen down the stairs as a child and had landed on this knee. On the X-ray we saw two large patella fragments. We made the diagnosis of dislocated and subluxated fracture of the patella without consolidation. The previously missed fracture was treated conservatively.

Comparison of closing-wedge and opening-wedge high tibial osteotomy for medial compartment osteoarthritis of the knee: a randomized controlled trial with a six-year follow-up

BACKGROUND

Varus deformity increases the risk of progression of medial compartment knee osteoarthritis. The aim of this study was to investigate the clinical and radiographic mid-term results of closing-wedge and opening-wedge high tibial osteotomy when used to treat this condition.

METHODS

From January 2001 to April 2004, ninety-two patients were randomized to receive either a closing-wedge or an opening-wedge high tibial osteotomy. The clinical outcome and radiographic results were examined preoperatively; at one year; and, for the present study, at six years postoperatively. The outcomes that we reviewed included maintenance of the achieved correction, progression of osteoarthritis (based on the Kellgren and Lawrence classification), severity of pain (as assessed on a visual analog scale [VAS]), knee function (as measured with the Hospital for Special Surgery [HSS] score and Knee injury and Osteoarthritis Outcome Score [KOOS]), walking distance, complications, and survival with conversion to a total knee arthroplasty as the end point. The results were analyzed on the basis of the intention-to-treat principle.

RESULTS

Six years postoperatively, the mean hip-knee-ankle (HKA) angle (and standard deviation) was 3.2° ± 4.1° of valgus after a closing-wedge high tibial osteotomy and 1.3° ± 5.0° of valgus after an opening-wedge high tibial osteotomy (p = 0.343). In both groups, the six-year postoperative HKA angles did not differ from the respective one-year postoperative angles. No difference in the severity of pain or in knee function was found between the two groups. Four complications (9%) occurred in the closing-wedge group and seventeen (38%), in the opening-wedge group. Ten (22%) of the patients in the closing-wedge group and three (8%) in the opening-wedge group needed conversion to a total knee arthroplasty within the six-year period (p = 0.05). The difference in the percentage of cases with conversion to total knee arthroplasty was 14% (95% confidence interval [CI] = 21.7 to 0.2).

CONCLUSIONS

In the group of patients without conversion to a total knee arthroplasty, there was no difference between the high tibial closing-wedge and opening-wedge osteotomies in terms of clinical outcomes or radiographic alignment at six years postoperatively. Opening-wedge osteotomy was associated with more complications, but closing-wedge osteotomy was associated with more early conversions to total knee arthroplasty.

LEVEL OF EVIDENCE

Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.

Osteotomy for treating knee osteoarthritis

BACKGROUND

Patients with unicompartmental osteoarthritis of the knee can be treated with a correction osteotomy. The goal of the correction osteotomy is to transfer the load bearing from the pathologic to the normal compartment of the knee. A successful outcome of the osteotomy relies on proper patient selection, stage of osteoarthritis, achievement and maintenance of adequate operative correction. This is an update of the original review published in Issue 1, 2005.

OBJECTIVES

To assess the effectiveness and safety of an osteotomy for treating osteoarthritis of the knee.

SEARCH STRATEGY

Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE (Current contents, Health STAR) up to October 2002 in the original review and in the update until May 2007. Reference lists of identified trials were screened.

SELECTION CRITERIA

Randomised and controlled clinical trials comparing a high tibial osteotomy or a distal femoral osteotomy in patients with unicompartmental osteoarthritis of the medial or lateral compartment of the knee.

DATA COLLECTION AND ANALYSIS

Two review authors independently selected trials, extracted data and assessed trial quality. Due to heterogeneity of the studies, pooling of outcome measures was not possible.

MAIN RESULTS

Thirteen studies involving over 693 people were included; 11 studies were included in the first version and two studies and one longer follow-up study were included in this update. All studies concerned a valgus high tibial osteotomy (HTO) for medial compartment osteoarthritis of the knee. Six studies, in which two studies were included in this update, compared two techniques of HTO. One study compared HTO alone versus HTO with additional treatment. Four studies compared within the same type of HTO, different peri-operative conditions (two studies) or two different types of post-operative treatment (two studies). Two studies, including the longer follow up, compared HTO with unicompartmental joint replacement. No study compared an osteotomy with conservative treatment. Most studies showed improvement of the patient (less pain and improvement of function scores) after osteotomy surgery, but in the majority of the studies there was no significant difference with other operative treatment (other technique of HTO/ unicompartmental joint replacement). Overall, the methodological quality was low.

AUTHORS' CONCLUSIONS

Based on 13 studies, we conclude that there is 'silver' level evidence (www.cochranemsk.org) that valgus HTO improves knee function and reduces pain. There is no evidence whether an osteotomy is more effective than conservative treatment and the results so far do not justify a conclusion about effectiveness of specific surgical techniques.

Pitfalls in determining knee alignment: a radiographic cadaver study

Full-length anteroposterior (AP) radiographs provide the basis for evaluating leg alignment. A cadaver study was performed to determine the effect of knee flexion and hip rotation on projected angles on full-length AP radiographs. The outcomes were verified mathematically. The results of the cadaver study were similar to the mathematical results. Flexion of the knee without rotation of the lower extremity has little effect on angles as projected on full-length AP radiographs. Rotation of the lower extremity without flexion of the knee also has little effect. Simultaneous flexion of the knee and rotation of the leg, however, cause large changes in projected angles. Full-length radiographs can be taken without fluoroscopic control as long as the knee can be fully extended. In flexion contracture, a full-length AP radiograph taken under lateral fluoroscopic control is necessary to obtain accurate determination of the mechanical axis.

Osteotomy for medial compartment arthritis of the knee using a closing wedge or an opening wedge controlled by a Puddu plate. A one-year randomised, controlled study

A prospective, randomised, controlled trial compared two different techniques of high tibial osteotomy with a lateral closing wedge or a medial opening wedge, stabilised by a Puddu plate. The clinical outcome and radiological results were examined at one year. The primary outcome measure was the achievement of an overcorrection of valgus of 4 degrees . Secondary outcome measures were the severity of pain (visual analogue scale), knee function (Hospital for Special Surgery score), and walking distance. Between January 2001 and April 2004, 92 patients were randomised to one or other of the techniques. At follow-up at one year the post-operative hip-knee-ankle angle was 3.4 degrees (+/- 3.6 degrees SD) valgus after a closing wedge and 1.3 degrees (+/- 4.7 degrees SD) of valgus after an opening wedge. The adjusted mean difference of 2.1 degrees was significant (p = 0.02). The deviation from 4 degrees of valgus alignment was 2.7 degrees (+/- 2.4 degrees SD) in the closing wedge and 4.0 degrees (+/- 3.6 degrees sd) in the opening-wedge groups. The adjusted mean difference of 1.67 degrees was also significant (p = 0.01). The severity of pain, knee score and walking ability improved in both groups, but the difference was not significant. Because of pain, the staples required removal in 11 (23%) patients in the closing-wedge group and a Puddu plate was removed in 27 (60%) patients in the opening-wedge group. This difference was significant (p < 0.001). We conclude that closing-wedge osteotomy achieves a more accurate correction with less morbidity, although both techniques had improved the function of the knee at one year after the procedure.

Brace treatment for osteoarthritis of the knee: a prospective randomized multi-centre trial

OBJECTIVE

To evaluate the effect of a brace intended to reduce load in patients with medial or lateral compartmental osteoarthritis (OA) and concurrent varus or valgus alignment, respectively.

DESIGN

This multi-centre randomized controlled trial (performed 2001-2003) studies the additive effect of a brace intended to reduce load in conservative treatment of unicompartmental OA of the knee.

SETTING

Orthopedic department of a university medical centre and of one general hospital. The follow-up was 12 months.

PATIENTS

117 patients with unicompartmental OA of the knee. Intervention group (n=60) comprising conservative treatment with additional brace treatment and a control group (n=57) comprising conservative treatment alone.

PRIMARY OUTCOME MEASURES

Pain severity and knee function score.

SECONDARY OUTCOME MEASURES

Walking distance and quality of life.

ANALYSIS

Multiple linear regression models according to the intention-to-treat-principle were used to assess outcome differences for the entire group of patients. In addition, we performed explorative subgroup analyses on primary overall outcomes stratified for alignment, degree of OA, origin of OA, and age.

RESULTS

Although the primary outcome measures were improved in the intervention group in comparison with the controls at each assessment point, the differences reached only borderline significance. The reported walking distances at 3 months, 12 months and overall were significantly longer in the brace group (P=0.03, P=0.04 and P=0.02, respectively). Subgroup analysis showed a better effect in the varus group, in patients with severe OA, in patients with secondary OA and in patients younger then 60 years. In total 25 patients in the brace group and 14 in the control group changed their initial treatment, mostly (74%) because of a lack of beneficial effect.

CONCLUSIONS

The results indicate that a brace intended to reduce load shows small effects in patients with unicompartmental OA. However, many patients do not adhere in the long run to this kind of conservative treatment.

[Septic polyarthritis due to an infected nail bed around an ingrown toenail in a previously healthy boy]

A 17-year-old, previously healthy boy was admitted with complaints of fever, malaise and pain in the pubic region and groin. His left elbow was also warm and swollen and could not be extended fully. Cultures of fluid drained from both hips and the elbow, blood and inflamed tissue from the nail bed of the right big toe yielded Staphylococcus aureus. The patient was treated with intravenous antibiotics for septic arthritis of both hips, the left elbow and possibly the pubic symphysis. The infected nail bed, which was the most likely port of entry, was also treated. One year later, the original painful symptoms had disappeared but the right hip was almost immobile. In a patient with indications of septic arthritis, timely diagnosis and adequate therapy reduce the risk of permanent damage to the joint.

Patellar height and the inclination of the tibial plateau after high tibial osteotomy. The open versus the closed-wedge technique

Our aim was to compare the degree of patellar descent and alteration in angle of the inclination of the tibial plateau in lateral closing-wedge and medial opening-wedge high tibial osteotomy (HTO) in 51 consecutive patients with osteoarthritis of the medial compartment and varus malalignment. Patellar height was measured by the Insall-Salvati (IS) and the Blackburne-Peel (BP) ratios. The tibial inclination was determined by the Moore-Harvey (MH) method. Multivariate linear regression analysis was used to determine the influence of the type of HTO (closing vs opening wedge) on the post-operative patellar height or tibial inclination. The intra- and interobserver variability of these methods was determined before operation and at follow-up at one year. After an opening-wedge HTO the patellar height was significantly more decreased (mean post-operative difference: IS = 0.15; 95% confidence interval (CI) 0.06 to 0.23; BP = 0.11; 95% CI 0.05 to 0.18) compared with a closing-wedge HTO. The angle of tibial inclination differed significantly (mean post-operative difference MH = -6.40 degrees; 95% CI -8.74 to -4.02) between the two HTO techniques, increasing after opening-wedge HTO and decreasing after closing-wedge HTO. There was no clinically-relevant difference in the intra- and interobserver variability of measurements of patellar height either before or after HTO.

Braces and orthoses for treating osteoarthritis of the knee

BACKGROUND

Patients with osteoarthritis of the knee can be treated with a brace or orthosis (shoe insole). The main purpose of these aids is to reduce pain, improve physical function and, possibly, to slow disease progression.

OBJECTIVES

To assess the effectiveness of a brace or orthosis in the treatment of osteoarthritis of the knee.

SEARCH STRATEGY

We searched Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and EMBASE (Current contents, Health STAR) up to October 2002. The reference lists of the publications in the identified trials were also screened.

SELECTION CRITERIA

Extracted studies were included in the final analysis if they met the pre-defined inclusion criteria: 1) a randomised controlled clinical trial or a controlled clinical trial, 2) all patients had osteoarthritis of the knee, 3) the intervention in one of the studied groups was a brace or an orthosis.

DATA COLLECTION AND ANALYSIS

Two reviewers independently selected the trials and assessed the methodological quality using the Delphi-list and one additional question about care programs. Three reviewers independently extracted the data on the intervention, type of outcome measures, follow-up, loss to follow-up, and results, using a pre-tested standardized form. Study authors were contacted for additional information.

MAIN RESULTS

Four trials involving a total of 444 people were included in this review. One study investigated a knee brace and three studies examined different types of orthoses for medial compartment osteoarthritis of the knee. Two studies were of high methodological quality while the other two studies were low. Notably, the randomisation and the blinding procedures were either insufficient or not described. The follow-up period (six weeks to six months) was too short to demonstrate long-term results. Pooling was difficult primarily due to the heterogeneity of the data and the way the information was presented. The pain, stiffness and physical function (WOMAC and MACTAR) scores of a brace group showed greater improvement at six months compared with a neoprene sleeve group, which showed greater improvement compared with a control group. The numbers of days of non-steroidal anti-inflammatory drug (NSAID) intake decreased significantly (relative percentage difference 23.9%) compared with baseline in a group with laterally wedged insoles,and remained unchanged in the neutrally wedged group. Patient compliance with the laterally wedged insole was significantly better compared with the neutrally wedged insole. In one study, the Visual Analogue Pain (VAS) pain score was significantly decreased from baseline in a strapped insole group (RPD - 24%), but not in the traditional lateral wedge group, but this strapped insole showed more adverse effects (popliteal pain, low back pain, and foot sole pain) compared with the traditional lateral wedge insole. Pain during bed rest, after getting up, after getting up from seated position and walking distance was significantly improved in a subtalar strapped group compared with baseline, and no improvement was found in a sock type group. No studies were found that assessed the effectiveness of a brace or orthosis to treat lateral compartment osteoarthritis or general osteoarthritis of the knee, or that compared a knee brace with a wedge insole, or that compared a brace or orthosis with operative treatment.

AUTHORS' CONCLUSIONS

Based on one brace study we conclude there is limited evidence that: a brace has additional beneficial effect (WOMAC, MACTAR, function tests) for knee osteoarthritis compared with medical treatment alone.(Silver) a sleeve has additional beneficial effect (WOMAC, function tests) for knee osteoarthritis compared with medical treatment alone.(Silver) a brace is more effective (WOMAC, function tests) than a neoprene sleeve.(Silver) Based on 3 orthoses studies, of which 2 were high quality, (n=2) we conclude there is limited evidence that: a laterally wedged insole decreases NSAID intake compared with a neutral insole. (Silver) patient compliance is better in the laterally wedged insole compared with a neutral insole. (Silver) a strapped insole has more adverse effects than a lateral wedge insole. (Silver).

Osteotomy for treating knee osteoarthritis

BACKGROUND

Patients with unicompartmental osteoarthritis of the knee can be treated with a correction osteotomy. The goal of the correction osteotomy is to transfer the load bearing from the pathologic to the normal compartment of the knee. A successful outcome of the osteotomy relies on proper patient selection, stage of osteoarthritis, achievement and maintenance of adequate operative correction.

OBJECTIVES

To assess the effectiveness and safety of an osteotomy for treating osteoarthritis of the knee.

SEARCH STRATEGY

The Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE (Current contents, Health STAR) were searched up until October 2002 for controlled clinical trials. The reference lists of publications in the identified trials were also screened.

SELECTION CRITERIA

Extracted studies were included in the final analysis if they met the pre-defined inclusion criteria: 1) a randomised controlled clinical trial or a controlled clinical trial 2) all patients had unicompartmental osteoarthritis of the medial or lateral compartment of the knee 3) the intervention in one of the studied groups was a high tibial osteotomy or a distal femoral osteotomy.

DATA COLLECTION AND ANALYSIS

Two reviewers independently selected the trials, assessed the methodological quality using a validated tool and extracted the data. The planned analysis was to pool the results where appropriate, however, due the heterogeneity of the studies, pooling of the outcome measures was not possible. Results are described for each study and presented as a best evidence synthesis.

MAIN RESULTS

Following the search strategy and applications of selection criteria, eleven studies were included in this review. All the studies concerned a valgus high tibial osteotomy (HTO) for medial compartment osteoarthritis of the knee. Four studies compared two techniques of HTO. One study compared HTO alone versus HTO with additional treatment. Four studies compared within the same type of HTO, different per-operative conditions (two studies) or two different types of post-operative treatment (two studies). Two studies compared HTO with unicompartmental joint replacement. No study compared an osteotomy with conservative treatment. Most studies showed improvement of the patient (less pain and improvement of function scores) after osteotomy surgery, but in the majority of the studies there was no significant difference with other operative treatment (other technique of HTO/ unicompartmental joint replacement). Overall, the methodological quality was low.

AUTHORS' CONCLUSIONS

Based on 11 studies, of which 6 were high quality, we conclude that there is silver level evidence that valgus HTO improves knee function and reduces pain. There is no evidence whether an osteotomy is more effective than conservative treatment and the results so far do not justify a conclusion about effectiveness of specific surgical techniques.

[Osteotomy at knee level for young patients with gonarthrosis]

Young patients with gonarthrosis that does not respond adequately to conservative therapy can be treated by corrective osteotomy. Osteoarthritis of one compartment more often has a mechanical aetiology than osteoarthritis of the entire knee. Patients with osteoarthritis of the medial compartment often have a genu varum (bow-legs) while patients with osteoarthritis of the lateral compartment often have a genu valgum (knock-knees). The goal of corrective osteotomy is to transfer the load bearing to the normal compartment, which will reduce the symptoms and permit arthroplasty to be postponed. In retrospective studies, the procedure resulted in less pain, improved knee function or postponement of knee arthroplasty in 28-87% of the patients. Possible complications include pseudarthrosis, thromboembolism, contracture of the patellar tendon, paresis of the N. peroneus, compartment syndrome. The outcome of osteotomy for gonarthrosis depends on careful patient selection, the stage of osteoarthritis, and the achievement and maintenance of the correction of the load axis that was calculated before the operation.

[Free air below the diaphragm: not always an acute surgical problem]

In three patients, two males aged 66 and 67 years with among other disorders chronic obstructive pulmonary disease (COPD) and one woman aged 24 years with a history of intestinal surgery and current abdominal pain, the chest X-ray showed free air below the diaphragm. The two males had no major abdominal symptoms, but they did have pneumonia. All were treated conservatively. Of the males, one died from pneumonia, the other recovered. The woman presented recurrent symptoms and was subjected to extensive diagnostic examinations. This revealed a marked sigmoid perforation which was repaired, after which the symptoms did not recur. Pneumoperitoneum indicates rupture or perforation of a hollow viscus in up to 90%. In these cases, prompt surgical management is the therapy of choice. In at least 10% free air under the diaphragm is due to causes which do not require surgical treatment. These causes can be divided into intra-abdominal, intrathoracic, gynaecological and iatrogenic diseases. Conservative management should only be considered if followed by frequent and intensive evaluation of the patient's condition.

[Rupture of the quadriceps tendon; cannot be missed?]

In four patients, two men aged 59 and 68 years and two women aged 59 and 50 years, a unilateral rupture of the quadriceps tendon was diagnosed. In two patients the disease was initially misdiagnosed. A depression was palpable in all patients just on the proximal side of the patella. All patients were treated operatively and all recovered with satisfactory knee function. In order to obtain full recovery early aetiological diagnosis is important; quadriceps tendon rupture should be considered in patients with haemarthrosis and inability to stretch the knee.