The symptomatic adult flatfoot: Is there a relationship between severity and degree of pre-existing arthritis in the foot and ankle?

BACKGROUND: The acquired adult flatfoot deformity (AFFD) is a potentially debilitating foot condition with a prevalence thought to be between 3 %-10 %. To the authors' best knowledge, no association has been described between severity of AFFD and degree of pre-existing ankle or foot arthritis. The degree and pattern of preexisting ipsilateral arthritis of the foot and ankle was investigated in those with symptomatic AFFD presenting to hospital. METHODS: Retrospective observational study between May 2015 and May 2018, of patients who presented to our tertiary clinic with symptomatic AFFD. Radiographs of one hundred and forty-eight (n=148) patients were reviewed, excluding those with charcot arthropathy, previous trauma or coalition. The primary outcome measure was severity of OA in the ankle, subtalar, talonavicular and calcaneocuboid joints. Secondary outcome was severity of radiographic planovalgus deformity. The independant variables used were age and severity of planovalgus deformity as measured by the Meary angle, calcaneal pitch and medial cuneiform-fifth metatarsal height. A linear regression model was carried out on the outcomes. RESULTS: Median age was 60.0 years (IQR 22). There were 56 males to 92 females, with 75 left sided deformities observed and 73 right sided. With increasing severity of planovalgus measurements, there was no significant association observed in severity of arthritis in the ankle joint (p = 0.766), subtalar joint (p = 0.090), talonavicular joint (p = 0.256) and calcaneocuboid joint (p = 0.091). With increasing age, there was significance observed in degree of ankle arthritis, subtalar, talonavicular and calcaneocuboid joints (p = 0.001). There was no significant correlation observed with age for the angular break of Meary's line (p = 0.73), calcaneal pitch (0.262) and medial cuneiform-fifth metatarsal height (p = 0.937). CONCLUSION: This observational study shows no significant association between severity of radiographic planovalgus deformity and pre-existing arthritis of the ankle, hindfoot and midtarsal joints.

Current management options for displaced intra-articular calcaneal fractures: Non-operative, ORIF, minimally invasive reduction and fixation or primary ORIF and subtalar arthrodesis. A contemporary review.

BACKGROUND: Management of Displaced Intra-articular Calcaneal Fractures (DIACFs) continues to be technically demanding. The literature has not been definitive in its guidance for surgeons dealing with these injuries. Recent publications have further added to the lack of clarity. This review is intended to summarise the present state of knowledge, and provide some genuine guidance for clinicians. OBJECTIVES: To review previous research, focussing on articles published within the last fifteen years, and summarise the findings to aid surgeons in managing DIACFs with choosing best management for patients. METHODS: We reviewed the best evidence and literature, focussing on articles published within the last fifteen years, and summarised findings into workable recommendations. Variables of (1) patient, (2) the associated soft tissue injury and (3) the fracture characteristics were used to aid surgeons in choosing the best of the available options for each patient that presents with a DIACF. AUTHORS SUMMARY: Management of DIACFs can best be divided into four broad categories: (i) non-operative management, (ii) open reduction and internal fixation, (iii) minimally invasive reduction and fixation, and (iv) primary subtalar arthrodesis. The evolution of the literature would suggest orthopaedic surgeons managing calcaneus fractures should have an expert's knowledge, surgical expertise and the latest techniques to cover these four options, to tailor the treatment of DIACFs to the individual patient.

Development and validation of the Sports Athlete Foot and Ankle Score: an instrument for sports-related ankle injuries.

BACKGROUND: Many existing scoring systems assess ankle function, but there is no evidence that any of them has been validated in a group of patients with a higher demand on their ankle function. Problems include ceiling effects, not being able to detect change or they do not contain a sports-subscale. The aim of this study was to create a validated self-administered scoring system for ankle injuries in the higher performing athlete. METHODS: First, 26 patients were interviewed to solicit opinions needed to create the final score, which is modified from the Foot and Ankle Outcome Score (FAOS). Second, SAFAS was validated in a group of 25 athletes with and 14 athletes without ankle injury. It is a self-administered region specific sports foot and ankle score that contains four subscales assessing the levels of symptoms, pain, daily living and sports. RESULTS: The Spearman correlation coefficients between SAFAS and the Foot and Ankle Ability Measure (FAAM) ranged from 0.78 to 0.88. Content validity is established by key informant interviews, expert opinions and a high satisfaction rate of 75%. Cronbach's alpha indicated good internal consistency of each subscale ranging from 0.77 to 0.92. CONCLUSION: SAFAS has shown good evidence for being a valid instrudent for assessing sports-related ankle injuries in high-performing athletes.

The role of Plantaris Longus in Achilles tendinopathy: a biomechanical study.

BACKGROUND: The Plantaris Longus Tendon (PLT) may be implicated in Achilles (AT) tendinopathy. Different mechanical characteristics may be the cause. This study is designed to measure these. METHODS: Six PLT and six AT were harvested from frozen cadavers (aged 65-88). Samples were stretched to failure using a Minimat 2000™ (Rheometric Scientific Inc.). Force and elongation were recorded. Calculated tangent stiffness, failure stress and strain were obtained. Averaged mechanical properties were compared using paired, one-tailed t-tests. RESULTS: Mean stiffness was higher (p<0.001) in the PLT, measuring 5.71 N/mm (4.68-6.64), compared with 1.73 N/mm (1.40-2.22) in AT. Failure stress was also higher (p<0.01) in PLT: 1.42 N/mm(2) (0.86-2.23) AT: 0.20 N/mm(2) (0.16-0.25). Failure strain was less (p<0.05) in PLT: 14.1% (11.5-16.8) than AT: 21.8% (14.9-37.9). CONCLUSIONS: The PLT is stiffer, stronger than AT, demonstrating potential for relative movement under load. The stiffer PLT could tether AT and initiate an inflammatory response.

Ankle arthrodesis and its relationship to ipsilateral arthritis of the hind- and mid-foot.

It has been suggested that arthrodesis of the ankle leads to osteoarthritis of the joints of the ipsilateral hind- and midfoot. We believe these studies overlooked the presence of osteoarthritic changes in these joints before the arthrodesis. We reviewed the pre-operative radiographs of 70 patients with osteoarthritis of the ankle who underwent 71 ankle arthrodeses (one was bilateral). The talonavicular, calcaneocuboid, subtalar and naviculocuneiform joints were given an osteoarthritis score according to Kellgren and Lawrence. The mean age at operation was 54.9 years and the most common indication was for post-traumatic osteoarthritis (52 cases). A total of 68 patients showed pre-existing arthritis in either the hind- or mid-foot, with the subtalar joint the most commonly affected. Ipsilateral hind- and mid-foot arthritis is almost universally present in patients with arthritis of the ankle requiring arthrodesis. The presence of such changes may not be a consequence of this arthrodesis.

Arthroscopic ankle arthrodesis.

We reviewed 116 patients who underwent 118 arthroscopic ankle arthrodeses. The mean age at operation was 57 years, 2 months (20 to 86 years). The indication for operation was post-traumatic osteoarthritis in 67, primary osteoarthritis in 36, inflammatory arthropathy in 13 and avascular necrosis in two. The mean follow-up was 65 months (18 to 144). Nine patients (10 ankles) died before final review and three were lost to follow-up, leaving 104 patients (105 ankles) who were assessed by a standard telephone interview. The preoperative talocrural deformity was between 22 degrees valgus and 28 degrees varus, 94 cases were within 10 degrees varus/valgus. The mean time to union was 12 weeks (6 to 20). Nonunion occurred in nine cases (7.6%). Other complications included 22 cases requiring removal of a screw for prominence, three superficial infections, two deep vein thromboses/pulmonary emboli, one revision of fixation, one stress fracture and one deep infection. Six patients had a subtalar fusion at a mean of 48 months after ankle fusion. There were 48 patients with excellent, 35 with good, 10 with fair and 11 with poor clinical results.

Arthroscopic treatment of osteochondral lesions of the talus.

We reviewed, retrospectively, 65 patients who had undergone arthroscopic treatment for osteochondral lesions of the talus. The 46 men and 19 women with a mean age at operation of 34.25 years, were followed up for a mean of 3.5 years. The medial aspect was affected in 45 patients and the lateral aspect in 20. All the lateral lesions and 35 (75%) of the medial lesions were traumatic in origin. Medial lesions presented later than lateral lesions (3 v 1.5 years) and had a much greater incidence of cystic change (46% v 8%). At follow-up, 34 patients had achieved a good result, and 17 and 14 fair and poor results, respectively. Of the 14 poor results, 13 involved medial lesions. Cystic lesions had a poor outcome in 53% of patients. Excision and curettage led to better results than excision and drilling of the base. Further arthroscopic surgery for patients with a poor result was disappointing. There was no association between outcome and the patient's age.

Osteochondral lesions of the talus: a revised classification.

Osteochondral lesions of the talus present a numerically small but therapeutically significant problem to the foot surgeon. The diagnosis and investigation of such lesions have been greatly enhanced by modern high resolution magnetic resonance imaging capabilities, which have provided far greater detail of the pathological anatomy. We have reviewed our experience in this area and suggest a revised classification for osteochondral lesions appropriate to the detail available on magnetic resonance imaging scans. The cause of osteochondral lesions is also discussed.

Day-case or short-stay admission for arthroscopic knee surgery: a randomised controlled trial.

The Royal Colleges, The Audit Commission, and politicians have encouraged day-case care for patients undergoing arthroscopic knee surgery. However, there remains both public and professional concern regarding the acceptability and safety of this form of management, although there are clear economic benefits. In a prospective randomised controlled trial, 50 patients underwent arthroscopic surgery as a day-case and 50 patients were admitted overnight. Outcome was assessed by postal questionnaire 4 weeks after discharge. A linear visual analogue scale was used to measure pain levels. The response rate was 93%. The diagnoses and types of arthroscopic surgery were similar in both groups. In total, 94% of day-cases and 91% of patients admitted overnight expressed overall satisfaction. Pain after discharge was similar in both groups. Day-case management was preferred by 90% of day-case patients and by 64% of those admitted overnight. Of patients in the day-case group, 12% had to be admitted overnight because of recovery problems, but 7% of patients randomised to overnight stay discharged themselves. One patient admitted overnight required readmission because of a wound haematoma. Patients who had received day-case management returned to work significantly faster than those who had been admitted. Modern anaesthetic techniques with special attention to anti-emesis and pain control have reduced postoperative morbidity to acceptable levels. Provided that patients are properly selected and well informed, day-case care is preferable for the majority of patients undergoing arthroscopic surgery of the knee.

Use of ready-made insoles in the treatment of lesser metatarsalgia: a prospective randomized controlled trial.

Two insoles designed to treat primary lesser metatarsalgia were compared in terms of their effect on plantar pressures and the subjective symptom relief. A prospective single blind randomized trial of 8 weeks' treatment in 46 feet in 33 patients was performed. Subjective outcome measures were visual analogue pain scores and estimated compliance. Objective outcome measures were dynamic plantar pressures using the Musgrave Footprint System. In group 1 (Viscoped), 6 of 18 patients rated themselves much improved or somewhat improved, and in group 2 (Langer) the proportion was 12 of 15 (P = 0.02). Reported mean compliance was 16% higher in the Langer group. Plantar forefoot pressure was lowered by the insoles in all cases. The reduction was significantly greater (P < 0.001) in group 2, both in absolute pressure and as a percentage of initial pressure. Group 2 (Langer) was significantly better in terms of reduction of peak metatarsal pressure. All the subjective outcome measures were better for the group 2 (Langer).

Does early wound infection after elective orthopaedic surgery lead on to chronic sepsis?

Infection is an uncommon, but occasionally devastating, complication of orthopaedic surgery. The definition of post-operative infection remains problematic. A high rate of early post-operative sepsis has previously been reported using a clinical definition of wound infection as recommended by the Surgical Infection Study Group. The purposes of this study is to determine the rate of ongoing wound problems and deep sepsis 1 year after these early wound infections. Of 1131 consecutive orthopaedic procedures, there were 70 wound infections occurring within 30 days of surgery. Adequate follow-up data were obtained in 67 (97%) of the 69 patients alive at 1 year. Of these 67, three had definite evidence and two possible evidence of ongoing wound problems and/or deep sepsis. It is concluded that early post-operative wound infection as defined by the Surgical Infection Study Group is a poor predictor (4-10%) of ongoing wound problems and deep sepsis at 1 year. All of the confirmed cases of late sepsis were found to be associated with revision arthroplasty and/or pin tract sepsis.

An anatomical study of a new portal for ankle arthroscopy.

We describe a medial midline portal between the tendons of extensor hallucis longus and tibialis anterior for arthroscopy of the ankle. We dissected 20 cadaver specimens to compare the risk of neurovascular injury using this approach with that of using standard arthroscopic portals. Compared with the anterocentral portal, the medial midline was a mean of 11.2 mm further from the nearest branch of the superficial peroneal nerve and 10.3 mm further from the dorsalis pedis artery. This portal allows good access to the joint surface and intra-articular structures and has a lower risk of injury to the dorsalis pedis artery, deep peroneal nerve or the medial branch of the superficial peroneal nerve.

An audit of early wound infection after elective orthopaedic surgery.

The incidence of early post-operative wound infection was studied prospectively in 1053 patients undergoing elective orthopaedic procedures over a 3-month period. The study was repeated in 1131 patients a year later, 6 months after the hospital had moved to new premises. A clinical definition of wound infection identified disturbingly high sepsis rates. A total of 44% of all infections occurred after discharge from hospital. Despite the large sample, there was no significant difference in the rate of early wound infection between the two periods (7.85 and 6.82%). There was no significant difference in infection rates between theatres with and without laminar air flow. In the majority (35 out of 53) of minor infections, bacteriological confirmation was not available because no microbiological specimens were received. Conversely, there were five negative swabs out of 16 wounds defined clinically as major infections. We conclude that, where the rate of bacteriological confirmation of wound infection is low, the use of a clinical definition gives higher audited sepsis rates. Large audit samples are required to demonstrate differences as a result of a changed practice.

Anterior knee pain in rheumatoid patients after total knee replacement. Possible selection criteria for patellar resurfacing.

Postoperative anterior knee pain was evaluated in a consecutive series of 138 knees in 108 patients with rheumatoid arthritis treated by total knee replacement with Mark I Insall-Burstein prostheses. No knee had primary patellar resurfacing, and in the 119 knees followed up for a mean of 63.9 months, none had secondary resurfacing. Anterior knee pain was absent in 87 knees (73%), mild in 16 (13.5%) and moderate or severe in 16 (13.5%). The height of the patella above the prosthetic joint line was the only variable which was directly related to the incidence of anterior knee pain. The sensitivity and specificity of patellar height measurements for identifying patients with or without pain were derived. From these data, a selective policy of resurfacing the patella in those at risk was adopted. Choosing a patellar height of 15 mm or less, patellar resurfacing could be avoided in 80% of patients likely to have no pain, and the patella could be resurfaced in 65% of those likely to have anterior knee pain.

Does plaster immobilization predispose to pulmonary embolism?

Over a 5-year study period, 22 patients with isolated lower limb injuries who were immobilized in a plaster cast developed a pulmonary embolus. This information was not available from orthopaedic audit. Better cross-specialty accounting is required if complications that span different hospital specialties are to be fully elucidated. This problem was heightened by the number of emboli occurring while the patient was being treated as an outpatient.

Keller's arthroplasty and Mitchell osteotomy: a comparison with first metatarsal osteotomy of the long-term results for hallux valgus deformity in the younger female.

We have made a retrospective comparison between the results of 37 Keller's arthroplasties and 36 distal transverse first metatarsal osteotomies performed in female patients between the ages of 25 and 50 years, for the treatment of hallux valgus. The choice of operation depended on the policy of the consultant responsible for treatment, but analysis of the preoperative findings showed that the two groups were similar, allowing comparative assessment of Keller's procedure in the younger middle-aged patient. All patients were assessed 3 to 5 years after operation using an objective scoring system of symptoms, clinical examination, anteroposterior standing radiographs and walking footprints from a Harris Beath mat. The results following a Keller's arthroplasty were excellent in 7 (19%), good in 22 (60%), poor in 6 (16%), and needed revision in 2 cases (5%). In the osteotomy group, 11 (30.5%) were excellent, 19 (52.5%) were good, 5 (14%) were poor, and 1 (3%) required revision.